# 32\-Channel PoE\+ Modbus Relay System

## Description

Modular DIN\-rail 32\-channel relay system with an IEEE 802\.3at PoE\+ Ethernet controller, protected 24 V field power, isolated RS\-485, three bistable lighting modules, and one high\-inrush relay module\.

## Project Details

- **Owner:** ishan59
- **Created:** 8/19/2026
- **Last Updated:** 8/19/2026
- **Visibility:** Public

## Key Components

### BR1 — [DF01S](https://flux.ai/lcsc/df01s~nt27.md)

- JLCPCB Part Class: Extended Part
- Role: Rectification
- Functional Group: Controller PoE Power
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/1912111437\_onsemi\-DF01S\_C124477\.pdf
- LCSC Part Number: C124477
- Role Details: IEEE 802\.3at data\-pair and spare\-pair polarity bridges
- Package or Case Code: DIO\-BG\-SMD\_4P\-L8\.3\-W6\.4\-P5\.10\-LS10\.4\-TL
- Product Info Url: https://lcsc\.com/product\-detail/Bridge\-Rectifiers\_ON\-Semicon\-ON\-DF01S\_C124477\.html
- Part Type: Bridge Rectifiers
- Manufacturer Part Number: DF01S
- Manufacturer Name: onsemi\(安森美\)

**Pins:**
- \- [pin 2]
- \+ [pin 1]
- AC [pin 4]
- AC [pin 3]

### D1 — [SMBJ26AHE3\_B/H](https://flux.ai/adrian95/smbj26ahe3bh~r2d.md)

- Manufacturer Part Number: SMBJ26AHE3\_B/H
- Datasheet URL: https://www\.vishay\.com/docs/88392/smbj\.pdf
- Role Details: 26 V standoff 600 W TVS on protected field output
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Diode
- Functional Group: Controller Field Power Protection
- Role: Protection
- Manufacturer Name: Vishay General Semiconductor \- Diodes Division

**Pins:**
- A [pin 2]
- K [pin 1]

### D10 — [ESD2CAN24T2Q](https://flux.ai/silicon-yard/esd2can24t2q~mc.md)

- Role Details: Module bus differential TVS
- JLCPCB Part Class: Extended Part
- Part Type: TVS
- Functional Group: Relay Module RS\-485
- Manufacturer Name: RUILON
- Role: Protection
- Package or Case Code: SOT\-23\-3\_L2\.9\-W1\.3\-P1\.90\-LS2\.4\-BR
- Product Info Url: https://www\.lcsc\.com/product\-detail/C53413269\.html?utm\_source=octopart&utm\_medium=cpc&utm\_campaign=ESD2CAN24T2Q
- LCSC Part Number: C53413269
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/6ed0f19198cf1846031e22544bd468079a05294c517d9d37db8d049753f12177\.pdf
- Manufacturer Part Number: ESD2CAN24T2Q

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### D11 — [SMBJ26AHE3\_B/H](https://flux.ai/adrian95/smbj26ahe3bh~r2d.md)

- Role: Protection
- Role Details: 26 V standoff TVS at module field input
- Manufacturer Part Number: SMBJ26AHE3\_B/H
- Datasheet URL: https://www\.vishay\.com/docs/88392/smbj\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Relay Module Field Power
- Part Type: Diode
- Manufacturer Name: Vishay General Semiconductor \- Diodes Division

**Pins:**
- A [pin 2]
- K [pin 1]

### D2 — [ESD2CAN24T2Q](https://flux.ai/silicon-yard/esd2can24t2q~mc.md)

- Role Details: 24 V differential bus TVS array
- JLCPCB Part Class: Extended Part
- Role: Protection
- Part Type: TVS
- Manufacturer Name: RUILON
- Functional Group: Controller RS\-485
- Package or Case Code: SOT\-23\-3\_L2\.9\-W1\.3\-P1\.90\-LS2\.4\-BR
- Product Info Url: https://www\.lcsc\.com/product\-detail/C53413269\.html?utm\_source=octopart&utm\_medium=cpc&utm\_campaign=ESD2CAN24T2Q
- LCSC Part Number: C53413269
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/6ed0f19198cf1846031e22544bd468079a05294c517d9d37db8d049753f12177\.pdf
- Manufacturer Part Number: ESD2CAN24T2Q

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### D3 — [DF01S](https://flux.ai/lcsc/df01s~nt27.md)

- JLCPCB Part Class: Extended Part
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/1912111437\_onsemi\-DF01S\_C124477\.pdf
- Role: Rectification
- LCSC Part Number: C124477
- Package or Case Code: DIO\-BG\-SMD\_4P\-L8\.3\-W6\.4\-P5\.10\-LS10\.4\-TL
- Product Info Url: https://lcsc\.com/product\-detail/Bridge\-Rectifiers\_ON\-Semicon\-ON\-DF01S\_C124477\.html
- Role Details: IEEE 802\.3at data\-pair and spare\-pair polarity bridges
- Part Type: Bridge Rectifiers
- Manufacturer Part Number: DF01S
- Manufacturer Name: onsemi\(安森美\)
- Functional Group: Controller PoE Power

**Pins:**
- \- [pin 2]
- \+ [pin 1]
- AC [pin 4]
- AC [pin 3]

### IC1 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Functional Group: Relay Module Hardware Override
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- Role: Pulse Timing
- Role Details: Dual one\-shot channels generate bounded relay pulses independent of firmware
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC2 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- Role Details: Dual one\-shot channels generate bounded relay pulses independent of firmware
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Functional Group: Relay Module Hardware Override
- Role: Pulse Timing
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC3 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Functional Group: Relay Module Hardware Override
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Role: Pulse Timing
- Role Details: Dual one\-shot channels generate bounded relay pulses independent of firmware
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC4 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Role: Timing
- Operating Voltage: 5V
- Role Details: Hardware\-bounded 50 ms pulses independent of firmware
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Functional Group: Relay Module Hardware Override
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC5 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Role: Timing
- Operating Voltage: 5V
- Role Details: Hardware\-bounded 50 ms pulses independent of firmware
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Functional Group: Relay Module Hardware Override
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC6 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Functional Group: Relay Module Hardware Override
- Role: Timing
- Operating Temperature: \-40 to 85 C
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Role Details: Hardware\-bounded 50 ms pulses independent of firmware
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### IC7 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Operating Temperature: \-40 to 85 C
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- Functional Group: Relay Module Hardware Override
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Role: Timing
- Symbol Style: parametric\-v1
- Role Details: Hardware\-bounded 50 ms pulses independent of firmware
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### J1 — [2250629\-1](https://flux.ai/adrian95/2250629-1~2mn.md)

- Part Type: Connectors
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Controller Ethernet and PoE
- Datasheet URL: https://www\.snapeda\.com/parts/2250629\-1/Bel%20Fuse/datasheet/
- Role: Ethernet Connector
- Symbol Style: parametric\-v1
- Package or Case Code: TO
- Manufacturer Part Number: 2250629\-1
- Role Details: 10/100 Ethernet RJ45 with integrated magnetics
- Manufacturer Name: Bel Fuse

**Pins:**
- 17 [pin 17]
- 18 [pin 18]
- 19 [pin 19]
- 20 [pin 20]
- SHIELD [pin SH6]
- SHIELD [pin SH2]
- SHIELD [pin SH3]
- SHIELD [pin SH5]
- SHIELD [pin SH4]
- SHIELD [pin SH1]
- TRCT1 [pin 3]
- TRCT2 [pin 6]
- TRCT3 [pin 9]
- TRCT4 [pin 12]
- TRD1\- [pin 2]
- TRD1\+ [pin 1]
- TRD2\- [pin 5]
- TRD2\+ [pin 4]
- TRD3\- [pin 8]
- TRD3\+ [pin 7]
- TRD4\- [pin 11]
- TRD4\+ [pin 10]
- VC12 [pin 16]
- VC36 [pin 15]
- VC45 [pin 13]
- VC78 [pin 14]

### J10 — [1777109](https://flux.ai/silicon-yard/1777109.md)

- Mount: Solder
- Role: Field Bus Connector
- Manufacturer Name: PCB terminal block connector for wire\-to\-board power and signal connections, featuring a 2\-position configuration with 5\.08 mm pitch, through\-hole mounting, and screw\-clamp wire termination\. It is rated for 320 V, 16 A, and accepts 28–12 AWG \(0\.2–2\.5 mm²\) conductors\.  \#TerminalBlock \#PCBConnector \#WireToBoard \#ThroughHole \#ScrewClamp \#2Position \#5\.08mmPitch \#16A \#320V \#PhoenixContact
- Compliance: Green
- Part Type: Connectors
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- Role Details: IN/OUT \+24V, 0V, RS485\-A, RS485\-B, shield
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/0f4b44c67d1fa5c3b1a2e2fc38ff945e244c58675138188f4b3606f1874c18f3\.pdf
- Functional Group: Relay Module Field Bus
- Manufacturer Part Number: 1777109

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]

### J11 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Compliance: Green
- Mount: Screw
- Manufacturer Part Number: 1868076
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Functional Group: Relay Module Mains Contacts
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf
- Role: Mains Terminal

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J2 — [1777109](https://flux.ai/silicon-yard/1777109.md)

- Role: Field Bus Connector
- Mount: Solder
- Manufacturer Name: PCB terminal block connector for wire\-to\-board power and signal connections, featuring a 2\-position configuration with 5\.08 mm pitch, through\-hole mounting, and screw\-clamp wire termination\. It is rated for 320 V, 16 A, and accepts 28–12 AWG \(0\.2–2\.5 mm²\) conductors\.  \#TerminalBlock \#PCBConnector \#WireToBoard \#ThroughHole \#ScrewClamp \#2Position \#5\.08mmPitch \#16A \#320V \#PhoenixContact
- Compliance: Green
- Part Type: Connectors
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/0f4b44c67d1fa5c3b1a2e2fc38ff945e244c58675138188f4b3606f1874c18f3\.pdf
- Functional Group: Controller Field Bus
- Role Details: Pins allocated to \+24V, 0V, RS485\-A, RS485\-B, shield
- Manufacturer Part Number: 1777109

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]

### J20 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Functional Group: Relay Module Mains Contacts
- Compliance: Green
- Mount: Screw
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Role: Mains Terminal
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J3 — [1777109](https://flux.ai/silicon-yard/1777109.md)

- Functional Group: Relay Module Field Bus
- Mount: Solder
- Manufacturer Name: PCB terminal block connector for wire\-to\-board power and signal connections, featuring a 2\-position configuration with 5\.08 mm pitch, through\-hole mounting, and screw\-clamp wire termination\. It is rated for 320 V, 16 A, and accepts 28–12 AWG \(0\.2–2\.5 mm²\) conductors\.  \#TerminalBlock \#PCBConnector \#WireToBoard \#ThroughHole \#ScrewClamp \#2Position \#5\.08mmPitch \#16A \#320V \#PhoenixContact
- Compliance: Green
- Part Type: Connectors
- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: parametric\-v1
- Role: Field Bus Connector
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/0f4b44c67d1fa5c3b1a2e2fc38ff945e244c58675138188f4b3606f1874c18f3\.pdf
- Role Details: IN/OUT \+24V, 0V, RS485\-A, RS485\-B, shield
- Manufacturer Part Number: 1777109

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]

### J4 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Compliance: Green
- Mount: Screw
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Functional Group: Relay Module Mains Contacts
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf
- Role: Mains Terminal

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J5 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Role: Mains Terminal
- Compliance: Green
- Functional Group: Relay Module Mains Contacts
- Mount: Screw
- Manufacturer Part Number: 1868076
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J6 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Compliance: Green
- Role: Mains Terminal
- Mount: Screw
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Functional Group: Relay Module Mains Contacts
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J7 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Role: Mains Terminal
- Compliance: Green
- Mount: Screw
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Functional Group: Relay Module Mains Contacts
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J8 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Compliance: Green
- Functional Group: Relay Module Mains Contacts
- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Mount: Screw
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Role: Mains Terminal
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J9 — [1868076](https://flux.ai/silicon-yard/1868076.md)

- Role Details: Per\-channel COM/NO terminal; relay itself blocked pending approved library part
- Compliance: Green
- Mount: Screw
- Manufacturer Part Number: 1868076
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Role: Mains Terminal
- Functional Group: Relay Module Mains Contacts
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/printed\-circuit\-board\-terminal\-mkds\-5\-2\-762\-1868076?type=pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### PS1 — [Ag5324](https://flux.ai/silicon-yard/ag6800.md)

- Part Type: Integrated Circuits
- Symbol Style: parametric\-v1
- Role Details: PoE\+ PD to isolated 24 V, 1\.25 A field supply
- Functional Group: Controller PoE Power
- Role: Power Conversion
- Manufacturer Name: Silvertel
- Manufacturer Part Number: Ag5324
- Datasheet URL: https://www\.mouser\.com/datasheet/2/1048/Ag6800\-datasheet\-\_IEEE802\_3bt\-Power\-over\-Ethernet\-\-1804390\.pdf

**Pins:**
- 0V1\_1 [pin 13]
- 0V1\_2 [pin 14]
- 0V2\_1 [pin 15]
- 0V2\_2 [pin 16]
- IC\_1 [pin 3]
- IC\_2 [pin 4]
- IC\_3 [pin 6]
- IC\_4 [pin 7]
- OUT1\_1 [pin 11]
- OUT1\_2 [pin 12]
- OUT2\_1 [pin 17]
- OUT2\_2 [pin 18]
- POH\_EN [pin 8]
- STATUS [pin 5]
- VIN\-\_1 [pin 9]
- VIN\-\_2 [pin 10]
- VIN\+\_1 [pin 1]
- VIN\+\_2 [pin 2]

### Q1 — [CSD19537Q3 \- 4386107](https://flux.ai/kicad-part-library/csd19537q3-4386107~qdq.md)

- Manufacturer Name: Texas Instruments Inc\.
- Role: Reverse Polarity Protection
- Functional Group: Controller Field Power Protection
- Manufacturer Part Number: CSD19537Q3
- Role Details: 100 V blocking FET per TPS26630 application circuit
- Package or Case Code: VSON\-8\_3\.3x3\.3mm\_P0\.65mm\_NexFET
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/csd19537q3\.pdf

**Pins:**
- D [pin 5]
- G [pin 4]
- S [pin 3]
- S [pin 2]
- S [pin 1]

### Q2 — [BSS138](https://flux.ai/vasy_skral/bss138~3ld.md)

- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/bss138\-d\.pdf
- Role: Protection
- Manufacturer Part Number: BSS138
- Role Details: Signal FET across B\_GATE/DRV/IN\_SYS per datasheet
- Manufacturer Name: onsemi
- Functional Group: Controller Field Power Protection
- Part Type: Transistor

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### S1 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Part Type: Electromechanical Components
- Role Details: Hardwired HOA selector; panel\-mount library part
- Functional Group: Relay Module HOA Controls
- Role: Manual Override
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Manufacturer Name: E\-Switch

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S2 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Functional Group: Relay Module HOA Controls
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Role: Manual Override
- Manufacturer Name: E\-Switch
- Role Details: Hardwired HOA selector; panel\-mount library part

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S3 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Role: Manual Override
- Part Type: Electromechanical Components
- Role Details: Hardwired HOA selector; panel\-mount library part
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Functional Group: Relay Module HOA Controls
- Manufacturer Name: E\-Switch

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S4 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Role: Manual Override
- Functional Group: Relay Module HOA Controls
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Role Details: Hardwired HOA selector; panel\-mount library part
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Manufacturer Name: E\-Switch

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S5 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Role: Manual Override
- Functional Group: Relay Module HOA Controls
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Manufacturer Name: E\-Switch
- Role Details: Hardwired HOA selector; panel\-mount library part

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S6 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Role Details: Hardwired HOA selector; panel\-mount library part
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Manufacturer Name: E\-Switch
- Role: Manual Override
- Functional Group: Relay Module HOA Controls

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### S7 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Role Details: Hardwired HOA selector; panel\-mount library part
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Functional Group: Relay Module HOA Controls
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Role: Manual Override
- Manufacturer Name: E\-Switch

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### SW1 — [A6S\-8104\-H](https://flux.ai/lcsc/a6s-8104-h~90tf.md)

- Manufacturer Name: OMRON\(欧姆龙\)
- Role: Address Configuration
- Functional Group: Relay Module Addressing
- LCSC Part Number: C231310
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Omron\-Electronics\_A6S\-8104\-H\_Omron\-Electronics\-A6S\-8104\-H\_C231310\.html
- Manufacturer Part Number: A6S\-8104\-H
- Package or Case Code: SW\-SMD\_16P\-L21\.3\-W6\.2\-P2\.54\-LS9\.8
- Role Details: Module address and end\-of\-line options
- Datasheet URL: https://assets\.lcsc\.com/datasheet/szlcsc/Download\-ISO9001\-Certification\.pdf
- Part Type: DIP Switches

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 11 [pin 11]
- 12 [pin 12]
- 13 [pin 13]
- 14 [pin 14]
- 15 [pin 15]
- 16 [pin 16]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### SW10 — [100DP3T1B1M2QEH](https://flux.ai/cherepanyadima/100dp3t1b1m2qeh.md)

- Role: Manual Override
- Datasheet URL: https://configured\-product\-images\.s3\.amazonaws\.com/Datasheets/100\.pdf
- Role Details: Hardwired HOA selector; panel\-mount library part
- Part Type: Electromechanical Components
- Manufacturer Part Number: 100DP3T1B1M2QEH
- Manufacturer Name: E\-Switch
- Functional Group: Relay Module HOA Controls

**Pins:**
- \~ [pin 3]
- \~ [pin 1]
- \~ [pin 5]
- \~ [pin 6]
- \~ [pin 2]
- \~ [pin 4]

### U1 — [W55RP20](https://flux.ai/adrian95/w55rp20.md)

- Role Details: Modbus TCP server and RS\-485 gateway
- Role: Main Controller
- Functional Group: Controller MCU and Ethernet
- Manufacturer Name: WIZnet Inc
- Part Type: Integrated Circuits
- Manufacturer Part Number: W55RP20
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/e2cc4ffee60aa0eeaf25a2efd8b09de5b2c980b6a37b17f50d2b004f025c7594\.pdf
- Symbol Style: parametric\-v1

**Pins:**
- 1V2O [pin 35]
- ACTLED [pin 39]
- ADC\_AVDD [pin 54]
- AVDD\_1 [pin 3]
- AVDD\_2 [pin 6]
- AVDD\_3 [pin 8]
- AVDD\_4 [pin 31]
- AVDD\_5 [pin 34]
- BOOT [pin 63]
- DUPLED [pin 38]
- DVDD\_1 [pin 26]
- DVDD\_2 [pin 61]
- EXRES1 [pin 7]
- GND [pin 69]
- GPIO0 [pin 65]
- GPIO1 [pin 66]
- GPIO10 [pin 16]
- GPIO11 [pin 17]
- GPIO12 [pin 18]
- GPIO13 [pin 19]
- GPIO14 [pin 20]
- GPIO15 [pin 21]
- GPIO16 [pin 30]
- GPIO18 [pin 40]
- GPIO19 [pin 41]
- GPIO2 [pin 67]
- GPIO26/ADC0 [pin 46]
- GPIO27/ADC1 [pin 47]
- GPIO28/ADC2 [pin 48]
- GPIO29/ADC3 [pin 49]
- GPIO3 [pin 68]
- GPIO4 [pin 9]
- GPIO5 [pin 10]
- GPIO6 [pin 11]
- GPIO7 [pin 12]
- GPIO8 [pin 14]
- GPIO9 [pin 15]
- IOVDD\_1 [pin 13]
- IOVDD\_2 [pin 25]
- IOVDD\_3 [pin 43]
- IOVDD\_4 [pin 53]
- IOVDD\_5 [pin 60]
- IOVDD\_6 [pin 64]
- LINKLED [pin 37]
- PMODE0 [pin 52]
- PMODE1 [pin 51]
- PMODE2 [pin 50]
- RUN [pin 29]
- RXN [pin 4]
- RXP [pin 5]
- SPDLED [pin 36]
- SWCLK [pin 27]
- SWD [pin 28]
- TESTEN [pin 22]
- TOCAP [pin 33]
- TXN [pin 1]
- TXP [pin 2]
- USB\_DM [pin 57]
- USB\_DP [pin 58]
- USB\_VDD [pin 59]
- VBG [pin 32]
- VDD\_1 [pin 42]
- VDD\_2 [pin 62]
- VREG\_VIN [pin 55]
- VREG\_VOUT [pin 56]
- XI [pin 44]
- XIN [pin 23]
- XO [pin 45]
- XOUT [pin 24]

### U10 — [STM32F030C8T6](https://flux.ai/vasy_skral/stm32f030c8t6~nec.md)

- Part Type: Microcontroller
- Functional Group: Relay Module Control
- Manufacturer Name: STMicroelectronics
- Datasheet URL: https://www\.st\.com/content/ccc/resource/technical/document/datasheet/a4/5d/0b/0e/87/c4/4d/71/DM00088500\.pdf/files/DM00088500\.pdf/jcr:content/translations/en\.DM00088500\.pdf
- Role Details: Eight\-channel relay sequencing, HOA sensing, state restoration
- Role: Module Controller
- Manufacturer Part Number: STM32F030C8T6

**Pins:**
- BOOT0 [pin 44]
- NRST [pin 7]
- PA0 [pin 10]
- PA1 [pin 11]
- PA10 [pin 31]
- PA11 [pin 32]
- PA12 [pin 33]
- PA13 [pin 34]
- PA14 [pin 37]
- PA15 [pin 38]
- PA2 [pin 12]
- PA3 [pin 13]
- PA4 [pin 14]
- PA5 [pin 15]
- PA6 [pin 16]
- PA7 [pin 17]
- PA8 [pin 29]
- PA9 [pin 30]
- PB0 [pin 18]
- PB1 [pin 19]
- PB10 [pin 21]
- PB11 [pin 22]
- PB12 [pin 25]
- PB13 [pin 26]
- PB14 [pin 27]
- PB15 [pin 28]
- PB2 [pin 20]
- PB3 [pin 39]
- PB4 [pin 40]
- PB5 [pin 41]
- PB6 [pin 42]
- PB7 [pin 43]
- PB8 [pin 45]
- PB9 [pin 46]
- PC13 [pin 2]
- PC14 [pin 3]
- PC15 [pin 4]
- PF0 [pin 5]
- PF1 [pin 6]
- PF6 [pin 35]
- PF7 [pin 36]
- VDD [pin 24]
- VDD [pin 48]
- VDD [pin 1]
- VDDA [pin 9]
- VSS [pin 47]
- VSS [pin 23]
- VSSA [pin 8]

### U11 — [LMR33630BDDAR](https://flux.ai/lcsc/lmr33630bddar~o51d.md)

- Role: Voltage Regulator
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: LMR33630BDDAR
- Functional Group: Relay Module Logic Power
- Role Details: Module 3\.3 V logic rail from field 24 V
- Manufacturer Name: TI\(德州仪器\)
- LCSC Part Number: C544370
- Part Type: DC\-DC Converters
- Package or Case Code: SOIC\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL\-EP2\.8\-1
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/lmr33630\.pdf

**Pins:**
- BOOT [pin 7]
- EN [pin 3]
- EP [pin 9]
- FB [pin 5]
- PG [pin 4]
- PGND [pin 1]
- SW [pin 8]
- VCC [pin 6]
- VIN [pin 2]

### U12 — [ADM2682E](https://flux.ai/kicad-part-library/adm2682e~cj.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: ADM2682E
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/ADM2682E\_2687E\.pdf
- Role: Isolated Interface
- Package or Case Code: SOIC\-16W\_7\.5x12\.8mm\_P1\.27mm
- Functional Group: Relay Module RS\-485
- Role Details: Module RS\-485 transceiver with integrated isolated power

**Pins:**
- \~\{RE\} [pin 4]
- A [pin 14]
- B [pin 13]
- DE [pin 5]
- GND1 [pin 8]
- GND1 [pin 1]
- GND2 [pin 9]
- GND2 [pin 16]
- RXD [pin 3]
- TXD [pin 6]
- VCC [pin 7]
- VCC [pin 2]
- VISOIN [pin 15]
- VISOOUT [pin 10]
- Y [pin 11]
- Z [pin 12]

### U13 — [ULN2803A](https://flux.ai/lcsc/uln2803a~i9jk.md)

- Manufacturer Name: UMW\(友台半导体\)
- Product Info Url: https://lcsc\.com/product\-detail/Darlington\-transistor\-array\-driver\_UMW\-Youtai\-Semiconductor\-Co\-Ltd\-ULN2803A\_C845537\.html
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410251531\_UMW\-Youtai\-Semiconductor\-Co\-\-\-Ltd\-\-ULN2803A\_C845537\.pdf
- Role: Switching
- Manufacturer Part Number: ULN2803A
- Role Details: Parallel driver bank allows HOA hardware to bypass firmware
- JLCPCB Part Class: Extended Part
- Part Type: Darlington transistor array driver
- LCSC Part Number: C845537
- Functional Group: Relay Module Drivers
- Package or Case Code: SOP\-18\_L11\.4\-W7\.6\-P1\.27\-LS10\.6\-BL

**Pins:**
- COM [pin 10]
- GND [pin 9]
- Input [pin 5]
- Input [pin 1]
- Input [pin 6]
- Input [pin 4]
- Input [pin 8]
- Input [pin 3]
- Input [pin 2]
- Input [pin 7]
- Output [pin 16]
- Output [pin 15]
- Output [pin 13]
- Output [pin 12]
- Output [pin 18]
- Output [pin 17]
- Output [pin 11]
- Output [pin 14]

### U14 — [ULN2803A](https://flux.ai/lcsc/uln2803a~i9jk.md)

- Manufacturer Name: UMW\(友台半导体\)
- Functional Group: Relay Module Drivers
- Product Info Url: https://lcsc\.com/product\-detail/Darlington\-transistor\-array\-driver\_UMW\-Youtai\-Semiconductor\-Co\-Ltd\-ULN2803A\_C845537\.html
- Role: Switching
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410251531\_UMW\-Youtai\-Semiconductor\-Co\-\-\-Ltd\-\-ULN2803A\_C845537\.pdf
- Role Details: RESET driver bank; DNP for high\-inrush monostable variant
- Manufacturer Part Number: ULN2803A
- JLCPCB Part Class: Extended Part
- Part Type: Darlington transistor array driver
- LCSC Part Number: C845537
- Package or Case Code: SOP\-18\_L11\.4\-W7\.6\-P1\.27\-LS10\.6\-BL

**Pins:**
- COM [pin 10]
- GND [pin 9]
- Input [pin 5]
- Input [pin 1]
- Input [pin 6]
- Input [pin 4]
- Input [pin 8]
- Input [pin 3]
- Input [pin 2]
- Input [pin 7]
- Output [pin 16]
- Output [pin 15]
- Output [pin 13]
- Output [pin 12]
- Output [pin 18]
- Output [pin 17]
- Output [pin 11]
- Output [pin 14]

### U15 — [SN74AHC123AN](https://flux.ai/silicon-yard/sn74ahc123an.md)

- Role: Pulse Timing
- Operating Temperature: \-40 to 85 C
- Operating Voltage: 5V
- Manufacturer Part Number: SN74AHC123AN
- Package or Case Code: PDIP
- Part Type: Integrated Circuit
- Functional Group: Relay Module Hardware Override
- License: https://creativecommons\.org/licenses/by/4\.0/
- Implementation Details: Official TI part selected: SN74AHC123AN\. Use TI SNx4AHC123A datasheet: https://www\.ti\.com/lit/ds/symlink/sn74ahc123a\.pdf\. AHC operating range is 2 V to 5\.5 V VCC; SN74AHC123AN is active, PDIP package code N, 16 pins, \-40 to 85 C\.
- Manufacturer Name: Texas Instruments
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/148a9342a599b18bcdc697bd2233fbcecb594fd873a7087ec8b937971408d3c8\.pdf
- Role Details: Dual one\-shot channels generate bounded relay pulses independent of firmware

**Pins:**
- 1\~A [pin 1]
- 1\~CLR [pin 3]
- 1\~Q [pin 4]
- 1B [pin 2]
- 1CEXT [pin 14]
- 1Q [pin 13]
- 1REXT/CEXT [pin 15]
- 2\~A [pin 9]
- 2\~CLR [pin 11]
- 2\~Q [pin 12]
- 2B [pin 10]
- 2CEXT [pin 6]
- 2Q [pin 5]
- 2REXT/CEXT [pin 7]
- GND [pin 8]
- VCC [pin 16]

### U2 — [LMR33630BDDAR](https://flux.ai/lcsc/lmr33630bddar~o51d.md)

- Role Details: Controller 3\.3 V rail from protected 24 V
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: LMR33630BDDAR
- Functional Group: Controller Logic Power
- Role: Voltage Regulator
- Manufacturer Name: TI\(德州仪器\)
- LCSC Part Number: C544370
- Part Type: DC\-DC Converters
- Package or Case Code: SOIC\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL\-EP2\.8\-1
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/lmr33630\.pdf

**Pins:**
- BOOT [pin 7]
- EN [pin 3]
- EP [pin 9]
- FB [pin 5]
- PG [pin 4]
- PGND [pin 1]
- SW [pin 8]
- VCC [pin 6]
- VIN [pin 2]

### U3 — [ADM2682E](https://flux.ai/kicad-part-library/adm2682e~cj.md)

- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: ADM2682E
- Functional Group: Controller RS\-485
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/ADM2682E\_2687E\.pdf
- Role: Isolated Interface
- Package or Case Code: SOIC\-16W\_7\.5x12\.8mm\_P1\.27mm
- Role Details: Controller long\-distance RS\-485 transceiver

**Pins:**
- \~\{RE\} [pin 4]
- A [pin 14]
- B [pin 13]
- DE [pin 5]
- GND1 [pin 8]
- GND1 [pin 1]
- GND2 [pin 9]
- GND2 [pin 16]
- RXD [pin 3]
- TXD [pin 6]
- VCC [pin 7]
- VCC [pin 2]
- VISOIN [pin 15]
- VISOOUT [pin 10]
- Y [pin 11]
- Z [pin 12]

### U4 — [TPS26630RGE](https://flux.ai/kicad-part-library/tps26630rge~yk.md)

- Role: Protection
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps2663\.pdf
- Package or Case Code: Texas\_RGE0024H\_VQFN\-24\-1EP\_4x4mm\_P0\.5mm\_EP2\.7x2\.7mm\_ThermalVias
- Manufacturer Name: Texas Instruments Inc\.
- Manufacturer Part Number: TPS26630RGE
- Functional Group: Controller Field Power Protection
- Role Details: 24 V field output eFuse sized for 1 A nominal limit

**Pins:**
- \~\{FLT\} [pin 14]
- \~\{SHDN\} [pin 12]
- B\_GATE [pin 3]
- DRV [pin 4]
- dVdT [pin 9]
- GND [pin 25]
- GND [pin 8]
- ILIM [pin 10]
- IMON [pin 13]
- IN [pin 1]
- IN [pin 2]
- IN\_SYS [pin 5]
- MODE [pin 11]
- NC [pin 19]
- NC [pin 21]
- NC [pin 22]
- NC [pin 23]
- NC [pin 20]
- NC [pin 24]
- OUT [pin 18]
- OUT [pin 17]
- OVP [pin 7]
- PGOOD [pin 16]
- PGTH [pin 15]
- UVLO [pin 6]

### Y1 — [12MHz Crystal Oscillator](https://flux.ai/collinsemasi/12mhz-crystal-oscillator~wc.md)

- Manufacturer Name: YXC
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/2304140030\_YXC\-X322512MSB4SI\_C9002\.pdf
- Role: Signal Generation
- Manufacturer Part Number: X322512MSB4SI
- Part Type: Resonator
- Functional Group: Controller MCU and Ethernet
- Role Details: W55RP20 MCU crystal; 20 pF load specification

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/ishan59/32\-channel\-poeplus\-modbus\-relay\-system\~jr](https://flux.ai/ishan59/32-channel-poeplus-modbus-relay-system~jr).*

---

*Generated from [https://flux\.ai/ishan59/32\-channel\-poeplus\-modbus\-relay\-system\~jr](https://flux.ai/ishan59/32-channel-poeplus-modbus-relay-system~jr)*