# Universal Welding Remote \- Receiver PCB

## Description

Rugged paired wireless amperage\-control platform with a battery handheld, universal protected receiver, machine profiles, and passive adapters for Lincoln Flextec 350X and Dual Maverick 200/200X\.

## Project Details

- **Owner:** cfuentes77
- **Created:** 9/25/2026
- **Last Updated:** 9/25/2026
- **Visibility:** Public

## Key Components

### D10 — [STPS1H100A](https://flux.ai/lcsc/stps1h100a~v2cq.md)

- Manufacturer Part Number: STPS1H100A
- LCSC Part Number: C165701
- Package or Case Code: SMA\_L4\.3\-W2\.6\-LS5\.2\-RD
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_STMicroelectronics\_STPS1H100A\_STPS1H100A\_C165701\.html
- Role: ORing Diode
- Functional Group: PROTECT F10 Receiver Inputs
- Manufacturer Name: ST\(意法半导体\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410122030\_STMicroelectronics\-STPS1H100A\_C165701\.pdf
- Role Details: 100 V Schottky blocks backfeed from machine supply
- JLCPCB Part Class: Extended Part
- Part Type: Schottky Barrier Diodes \(SBD\)

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

### D11 — [STPS1H100A](https://flux.ai/lcsc/stps1h100a~v2cq.md)

- Functional Group: PROTECT F10 Receiver Inputs
- Manufacturer Part Number: STPS1H100A
- LCSC Part Number: C165701
- Package or Case Code: SMA\_L4\.3\-W2\.6\-LS5\.2\-RD
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_STMicroelectronics\_STPS1H100A\_STPS1H100A\_C165701\.html
- Role: ORing Diode
- Manufacturer Name: ST\(意法半导体\)
- Role Details: 100 V Schottky blocks backfeed from external supply
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410122030\_STMicroelectronics\-STPS1H100A\_C165701\.pdf
- JLCPCB Part Class: Extended Part
- Part Type: Schottky Barrier Diodes \(SBD\)

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

### D12 — [SMBJ58A](https://flux.ai/adrian95/smbj58a~hbz.md)

- Role Details: 58 V standoff, 93\.6 V maximum clamp TVS; supports 12\-48 VDC continuous POC input, not a 60 V continuous rating
- Part Type: Diode
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Surge Protection
- Manufacturer Part Number: SMBJ58A
- Functional Group: PROTECT F10 Receiver Inputs
- Manufacturer Name: Littelfuse Inc\.
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/tvs\-diodes\-smbj\-series\-datasheet?assetguid=ba555e99\-a12d\-4f72\-a0b6\-86b06c67171e

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

### D13 — [SMBJ58A](https://flux.ai/adrian95/smbj58a~hbz.md)

- Role Details: 58 V standoff, 93\.6 V maximum clamp TVS; supports 12\-48 VDC continuous POC input, not a 60 V continuous rating
- Part Type: Diode
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: SMBJ58A
- Functional Group: PROTECT F10 Receiver Inputs
- Role: Surge Protection
- Manufacturer Name: Littelfuse Inc\.
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/tvs\-diodes\-smbj\-series\-datasheet?assetguid=ba555e99\-a12d\-4f72\-a0b6\-86b06c67171e

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

### D14 — [SMAJ12A\-13\-F](https://flux.ai/lcsc/smaj12a-13-f~do.md)

- Manufacturer Name: DIODES\(美台\)
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C134947
- Manufacturer Part Number: SMAJ12A\-13\-F
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_DIODES\_SMAJ12A\-13\-F\_SMAJ12A\-13\-F\_C134947\.html
- Functional Group: ANALOG U15 Machine Pot Emulation
- Role Details: 12 V standoff TVS from protected machine wiper to MACH\_COMMON; above normal 10 V reference
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Diodes\-Incorporated\-SMAJ12A\-13\-F\_C134947\.pdf
- Role: Analog Protection
- Part Type: TVS
- Package or Case Code: SMA\_L4\.4\-W2\.6\-LS5\.0\-RD

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

### D15 — [SMAJ12A\-13\-F](https://flux.ai/lcsc/smaj12a-13-f~do.md)

- Manufacturer Name: DIODES\(美台\)
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C134947
- Manufacturer Part Number: SMAJ12A\-13\-F
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_DIODES\_SMAJ12A\-13\-F\_SMAJ12A\-13\-F\_C134947\.html
- Role: Protection
- Functional Group: ANALOG U15 Machine Pot Emulation
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Diodes\-Incorporated\-SMAJ12A\-13\-F\_C134947\.pdf
- Role Details: 12 V standoff clamp across machine\-provided 10 V reference; validate by surge testing
- Part Type: TVS
- Package or Case Code: SMA\_L4\.4\-W2\.6\-LS5\.0\-RD

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

### F10 — [0451\.500MRL](https://flux.ai/lcsc/0451p500mrl~i4r.md)

- Manufacturer Part Number: 0451\.500MRL
- JLCPCB Part Class: Extended Part
- Package or Case Code: FUSE\-SMD\_L6\.1\-W2\.7
- Part Type: Fuses
- LCSC Part Number: C142836
- Product Info Url: https://lcsc\.com/product\-detail/Surface\-Mount\-Fuses\_Littelfuse\_0451\-500MRL\_Littelfuse\-0451\-500MRL\_C142836\.html
- Role: Input Fuse
- Functional Group: PROTECT F10 Receiver Inputs
- Role Details: 0\.5 A machine\-power branch fuse; receiver peak budget below 0\.3 A at 9 V
- Manufacturer Name: Littelfuse\(美国力特\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_Littelfuse\-0451\-500MRL\_C142836\.pdf

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

### F11 — [0451\.500MRL](https://flux.ai/lcsc/0451p500mrl~i4r.md)

- Manufacturer Part Number: 0451\.500MRL
- JLCPCB Part Class: Extended Part
- Package or Case Code: FUSE\-SMD\_L6\.1\-W2\.7
- Functional Group: PROTECT F10 Receiver Inputs
- Role Details: 0\.5 A external\-power branch fuse; receiver peak budget below 0\.3 A at 9 V
- Part Type: Fuses
- Role: Input Fuse
- LCSC Part Number: C142836
- Product Info Url: https://lcsc\.com/product\-detail/Surface\-Mount\-Fuses\_Littelfuse\_0451\-500MRL\_Littelfuse\-0451\-500MRL\_C142836\.html
- Manufacturer Name: Littelfuse\(美国力特\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_Littelfuse\-0451\-500MRL\_C142836\.pdf

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

### J10 — [691412320005](https://flux.ai/adrian95/691412320005~8bt.md)

- Manufacturer Name: Wurth Elektronik
- Connector Rows: 1
- Connector Positions: 5
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Machine Harness
- Functional Group: IO J10 Machine Harness
- Connector Pitch: 3\.81mm
- Datasheet URL: https://www\.we\-online\.com/components/products/download/691412320005\+%28rev1%29\.pdf
- Role Details: Universal passive\-adapter interface: MACH\_10V\_REF, MACH\_WIPER, MACH\_COMMON, MACHINE\_PWR, MACHINE\_PWR\_RETURN; trigger absent
- Manufacturer Part Number: 691412320005
- Connector Type: Terminal Blocks

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

### J11 — [0393570002](https://flux.ai/adrian95/0393570002~1xs.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: 0393570002
- Role: External Power Input
- Datasheet URL: https://www\.molex\.com/en\-us/products/part\-detail\-pdf/393570002?display=pdf
- Functional Group: IO J11 Receiver External Power
- Connector Positions: 2
- Connector Type: Terminal Blocks
- Connector Pitch: 3\.50mm
- Role Details: Protected external receiver input: 12\-48 VDC continuous POC range, 58 V maximum non\-transient; do not connect to 60 V nominal systems
- Manufacturer Name: Molex
- Connector Rows: 1
- Part Type: Connector

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

### J12 — [M50\-3500542](https://flux.ai/adrian95/m50-3500542~4sb.md)

- Part Type: Connectors
- Manufacturer Name: Harwin
- Datasheet URL: https://content\.harwin\.com/m/d0f746354cedd7a4/original/PD002\-Product\-Datasheet\-ARCHER\-M50\-and\-M52\-ranges\-BBi\.pdf
- Symbol Style: parametric\-v1
- Functional Group: IO J12 Receiver SWD
- Role Details: Receiver SWD programming and bring\-up
- Role: Debug Header
- Mount: Through Hole
- Manufacturer Part Number: M50\-3500542
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]

### J13 — [U\.FL\-R\-SMT\-1\(10\)](https://flux.ai/jecstronic/upfl-r-smt-110~du.md)

- Role Details: 50 ohm external 915 MHz antenna; antenna keepout required
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: U\.FL\-R\-SMT\-1\(10\)
- Role: RF Connector
- Functional Group: RF U10 Receiver LoRa
- Datasheet URL: https://media\.digikey\.com/pdf/Data%20Sheets/Hirose%20PDFs/EDC3\-302540\-10\.tif\.pdf
- Manufacturer Name: Hirose Electric Co Ltd
- Part Type: Connector

**Pins:**
- Center\_Contact [pin 2]
- Outer\_Contact [pin 1]
- Outer\_Contact [pin 3]

### LED10 — [SML\-D13FWT86C](https://flux.ai/jecstronic/sml-d13fwt86c~i2q.md)

- Role Details: Green receiver link status indicator, active low through R28
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: RF U10 Receiver LoRa
- Role: Signal Generation
- Manufacturer Name: Rohm Semiconductor
- Manufacturer Part Number: SML\-D13FWT86C
- Part Type: LED
- Datasheet URL: https://fscdn\.rohm\.com/en/products/databook/datasheet/opto/led/chip\_mono/sml\-d13fwt86\(c\)\-e\.pdf

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

### LED11 — [SML\-D13FWT86C](https://flux.ai/jecstronic/sml-d13fwt86c~i2q.md)

- Functional Group: RESET U12 Receiver Watchdog
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Signal Generation
- Manufacturer Name: Rohm Semiconductor
- Role Details: Green receiver watchdog reset indicator through R30
- Manufacturer Part Number: SML\-D13FWT86C
- Part Type: LED
- Datasheet URL: https://fscdn\.rohm\.com/en/products/databook/datasheet/opto/led/chip\_mono/sml\-d13fwt86\(c\)\-e\.pdf

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

### Q1 — [MMBT3906LT3G](https://flux.ai/lcsc/mmbt3906lt3g~8o1i.md)

- JLCPCB Part Class: Extended Part
- Role: Switching
- Manufacturer Part Number: MMBT3906LT3G
- Package or Case Code: SOT\-23\-3\_L2\.9\-W1\.6\-P1\.90\-LS2\.8\-BR
- Product Info Url: https://lcsc\.com/product\-detail/Transistors\-NPN\-PNP\_ON\-Semicon\_MMBT3906LT3G\_ON\-Semicon\-ON\-MMBT3906LT3G\_C232602\.html
- Manufacturer Name: onsemi\(安森美\)
- Role Details: Default\-off PNP switch powers U18 input LEDs and releases U15 RESET only after isolated validated\-command optocoupler assertion
- Functional Group: ANALOG U15 Machine Pot Emulation
- Part Type: Bipolar Transistors \- BJT
- LCSC Part Number: C232602
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2210210130\_onsemi\-MMBT3906LT3G\_C232602\.pdf

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### SW10 — [TS\-1088\-AR02016](https://flux.ai/lcsc/ts-1088-ar02016~e3n1.md)

- Role: Reset Switch
- Manufacturer Name: XUNPU\(讯普\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_XUNPU\-TS\-1088\-AR02016\_C720477\.pdf
- JLCPCB Part Class: Extended Part
- Functional Group: MCU U10 Receiver Control
- Role Details: Receiver manual reset; clears held\-last command state
- Manufacturer Part Number: TS\-1088\-AR02016
- Product Info Url: https://lcsc\.com/product\-detail/Tactile\-Switches\_XUNPU\-TS\-1088\-AR02016\_C720477\.html
- LCSC Part Number: C720477
- Part Type: Tactile Switches
- Package or Case Code: SW\-SMD\_L3\.9\-W3\.0\-P4\.45

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

### U10 — [RAK3172\-T\-9\-SM\-I](https://flux.ai/silicon-yard/rak3172-t-9-sm-i~8p.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/4e2506f7aae3222f8ae51e0dacb362b7490425a8fe140bc4c9dbe3010bf968ff\.pdf
- Symbol Style: parametric\-v1
- Manufacturer Part Number: RAK3172\-T\-9\-SM\-I
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: RF U10 Receiver LoRa
- Role Details: Receiver 915 MHz LoRa controller; holds last command in firmware on link loss
- Part Type: RF Transceiver
- Manufacturer Name: RAKwireless
- Role: Wireless MCU
- LCSC Part Number: C19723909

**Pins:**
- BOOT0 [pin 21]
- GND [pin 28]
- GND [pin 18]
- GND [pin 23]
- GND [pin 17]
- GND [pin 11]
- PA0 [pin 29]
- PA1 [pin 6]
- PA10/PIN\_A3 [pin 25]
- PA11/I2C\_SDA [pin 10]
- PA12/I2C\_SCL [pin 9]
- PA13/SWDIO [pin 7]
- PA14/SWCLK [pin 8]
- PA15/PIN\_A4 [pin 3]
- PA2/UART2\_TX [pin 2]
- PA3/UART2\_RX [pin 1]
- PA4/SPI1\_NSS [pin 16]
- PA5/SPI1\_CLK [pin 15]
- PA6/SPI1\_MISO [pin 14]
- PA7/SPI1\_MOSI [pin 13]
- PA8 [pin 19]
- PA9 [pin 20]
- PB12 [pin 27]
- PB2/PIN\_A2 [pin 26]
- PB3/PIN\_A0 [pin 32]
- PB4/PIN\_A1 [pin 31]
- PB5 [pin 30]
- PB6/UART1\_TX [pin 4]
- PB7/UART1\_RX [pin 5]
- RF [pin 12]
- RST [pin 22]
- VDD [pin 24]

### U11 — [LM5164DDAR](https://flux.ai/lcsc/lm5164ddar~6h70.md)

- Max Output Voltage: 1\.2V\~100V
- Output Current: 1A
- Role Details: 5 V receiver buck for a 12\-48 VDC continuous POC input; 58 V maximum non\-transient input; approximately 300 kHz, 250 mA design load
- Operating Temperature: \-40℃\~\+150℃@\(TJ\)
- Package or Case Code: SO\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL\-EP
- Part Type: DC\-DC Converters
- Manufacturer Name: TI\(德州仪器\)
- Product Info Url: https://lcsc\.com/product\-detail/DC\-DC\-Converters\_Texas\-Instruments\-Texas\-Instruments\-LM5164DDAR\_C477928\.html
- LCSC Part Number: C477928
- Frequency: 1MHz
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/lm5164\.pdf
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: LM5164DDAR
- Max Input Voltage: 6V\~100V
- Role: Power Regulation
- Logic Function: Step\-down
- Functional Group: POWER U11 Receiver 5V Buck

**Pins:**
- BST [pin 7]
- EN/UVLO [pin 3]
- EP [pin 9]
- FB [pin 5]
- GND [pin 1]
- PGOOD [pin 6]
- RON [pin 4]
- SW [pin 8]
- VIN [pin 2]

### U12 — [TPS3431\-Q1](https://flux.ai/silicon-yard/tps3431-q1~rm.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: TPS3431\-Q1
- Manufacturer Name: Texas Instruments
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/8649516dfb0d1417ceaeb298d981a902fdd7c7574a094c711ecda65c9c25cdbf\.pdf
- Part Type: Integrated Circuit
- Symbol Style: parametric\-v1
- Role Details: Receiver MCU watchdog; resets U10 only and does not reset the digipot during ordinary packet loss, preserving hold\-last command
- Role: Watchdog
- Functional Group: MCU U10 Receiver Control

**Pins:**
- \*WDO [pin 7]
- CWD [pin 2]
- EN [pin 3]
- ENOUT [pin 8]
- EPAD [pin 9]
- GND [pin 4]
- SET1 [pin 5]
- VDD [pin 1]
- WDI [pin 6]

### U13 — [ADUM1401CRWZ\-RL](https://flux.ai/lcsc/adum1401crwz-rl~o0nv.md)

- Role Details: Isolated SPI/reset boundary between receiver logic and machine analog domain
- Part Type: Digital Isolators
- Product Info Url: https://lcsc\.com/product\-detail/Digital\-Isolators\_Analog\-Devices\-ADI\-ADUM1401CRWZ\-RL\_C403696\.html
- LCSC Part Number: C403696
- Package or Case Code: SOIC\-16\_L10\.3\-W7\.5\-P1\.27\-LS10\.3\-BL
- JLCPCB Part Class: Extended Part
- Functional Group: ANALOG U15 Machine Pot Emulation
- Manufacturer Name: ADI\(亚德诺\)
- Role: Digital Isolation
- Manufacturer Part Number: ADUM1401CRWZ\-RL
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Analog\-Devices\-ADUM1401CRWZ\-RL\_C403696\.pdf

**Pins:**
- GND1 [pin 2]
- GND1 [pin 8]
- GND2 [pin 15]
- GND2 [pin 9]
- VDD1 [pin 1]
- VDD2 [pin 16]
- VE1 [pin 7]
- VE2 [pin 10]
- VIA [pin 3]
- VIB [pin 4]
- VIC [pin 5]
- VID [pin 11]
- VOA [pin 14]
- VOB [pin 13]
- VOC [pin 12]
- VOD [pin 6]

### U14 — [B0512S\-1WR2](https://flux.ai/lcsc/b0512s-1wr2~0596.md)

- Functional Group: ANALOG U15 Machine Pot Emulation
- Manufacturer Part Number: B0512S\-1WR2
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2205061500\_DEXU\-Electronics\-B0512S\-1WR2\_C909793\.pdf
- Part Type: Power Modules
- Product Info Url: https://lcsc\.com/product\-detail/Power\-Modules\_DEXU\-Electronics\-B0512S\-1WR2\_C909793\.html
- Role Details: 5 V to isolated 12 V, 1 W; powers high\-voltage digipot domain
- JLCPCB Part Class: Extended Part
- Role: Isolated Power
- Manufacturer Name: DEXU\(德旭电子\)
- LCSC Part Number: C909793
- Package or Case Code: PWRM\-TH\_BXXXXS\-1WR3

**Pins:**
- \+VO [pin 4]
- 0V [pin 3]
- GND [pin 1]
- VIN [pin 2]

### U15 — [AD5293BRUZ\-20](https://flux.ai/lcsc/ad5293bruz-20~n0a0.md)

- Manufacturer Part Number: AD5293BRUZ\-20
- LCSC Part Number: C141816
- Manufacturer Name: ADI\(亚德诺\)
- Initial Voltage on Reset: 5V
- Role: Digital Potentiometer
- Product Info Url: https://lcsc\.com/product\-detail/Digital\-Potentiometer\-ICs\_ADI\_AD5293BRUZ\-20\_AD5293BRUZ\-20\_C141816\.html
- Functional Group: ANALOG U15 Machine Pot Emulation
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/AD5293\.pdf
- Part Type: Digital Potentiometers
- JLCPCB Part Class: Extended Part
- Package or Case Code: TSSOP\-14\_L5\.0\-W4\.4\-P0\.65\-LS6\.4\-BL
- Role Details: 20 kOhm 1024\-tap high\-voltage digipot with 20 kOhm parallel shunt for approximately 10 kOhm end\-to\-end; relay\-isolated A/W terminals prevent power\-off injection; power\-up/reset is midscale

**Pins:**
- \~\{RESET\} [pin 1]
- \~\{SYNC\} [pin 12]
- A [pin 3]
- B [pin 5]
- DIN [pin 10]
- EXT\_CAP [pin 7]
- GND [pin 9]
- RDY [pin 14]
- SCLK [pin 11]
- SDO [pin 13]
- VDD [pin 6]
- VLOGIC [pin 8]
- VSS [pin 2]
- W [pin 4]

### U16 — [LM78L05F](https://flux.ai/lcsc/lm78l05f~y6jh.md)

- Part Type: Linear Voltage Regulators \(LDO\)
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/Linear\-Voltage\-Regulators\_HTC\_LM78L05F\_LM78L05F\_C126062\.html
- Package or Case Code: SOT\-89\-4\_L4\.5\-W2\.5\-P1\.50\-LS4\.2\-BR
- Role: Analog Supply
- Manufacturer Part Number: LM78L05F
- Role Details: Isolated 5 V rail for digital isolator output side
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_HTC\-Korea\-TAEJIN\-Tech\-LM78L05F\_C126062\.pdf
- Manufacturer Name: HTC
- LCSC Part Number: C126062
- Functional Group: ANALOG U15 Machine Pot Emulation

**Pins:**
- GND [pin 2]
- GND [pin 4]
- IN [pin 3]
- OUT [pin 1]

### U17 — [TPS7A2033PDBVR](https://flux.ai/lcsc/tps7a2033pdbvr~89ay.md)

- Datasheet URL: https://www\.lcsc\.com/datasheet/C2862740\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhaVFZURllbUzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- Functional Group: POWER U17 Receiver 3V3 LDO
- Manufacturer Name: TI\(德州仪器\)
- License: https://creativecommons\.org/licenses/by/4\.0/
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Manufacturer Part Number: TPS7A2033PDBVR
- LCSC Part Number: C2862740
- Role: Power Regulation
- JLCPCB Part Class: Extended Part
- Role Details: 5 V to 3\.3 V receiver logic LDO, 300 mA
- Symbol Style: parametric\-v1
- Part Type: Power Management

**Pins:**
- EN [pin 3]
- GND [pin 2]
- IN [pin 1]
- NC [pin 4]
- OUT [pin 5]

### U18 — [AQW212EHAX](https://flux.ai/lcsc/aqw212ehax~weap.md)

- Part Type: Solid State Relays \- MOS Output \(PhotoMOS\)
- Datasheet URL: https://na\.industrial\.panasonic\.com/products/relays\-contactors/semiconductor\-relays/series/12512/model/12520
- LCSC Part Number: C161815
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: AQW212EHAX
- Package or Case Code: SMD\-8\_L9\.8\-W6\.4\-P2\.54\-LS10\.0\-BL
- Functional Group: ANALOG U15 Machine Pot Emulation
- Manufacturer Name: PANASONIC\(松下\)
- Role Details: Dual normally\-open PhotoMOS disconnect for AD5293 A and W machine terminals; outputs remain open whenever isolated 5 V is absent, preventing power\-off injection
- Product Info Url: https://lcsc\.com/product\-detail/Solid\-State\-Relays\_PANASONIC\_AQW212EHAX\_AQW212EHAX\_C161815\.html
- Role: Isolation

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]

### U19 — [LTV\-817S\-TA](https://flux.ai/jecstronic/ltv-817s-ta~4s8.md)

- Manufacturer Name: Lite\-On Inc\.
- Functional Group: ANALOG U15 Machine Pot Emulation
- Role: Isolation
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://optoelectronics\.liteon\.com/upload/download/DS\-70\-96\-0016/LTV\-8X7%20series%20%20Rev\.S\.PDF
- Role Details: Receiver MCU validated\-command enable optocoupler; output is default\-off and drives isolated high\-side arm switch
- Part Type: Isolator
- Manufacturer Part Number: LTV\-817S\-TA

**Pins:**
- A [pin 1]
- C [pin 4]
- E [pin 3]
- K [pin 2]

### U20 — [LTV\-817S\-TA](https://flux.ai/jecstronic/ltv-817s-ta~4s8.md)

- Role: Isolation
- Manufacturer Name: Lite\-On Inc\.
- Role Details: Reports isolated 5 V presence to receiver MCU so any collapse immediately invalidates machine\-output enable
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: ANALOG U15 Machine Pot Emulation
- Datasheet URL: https://optoelectronics\.liteon\.com/upload/download/DS\-70\-96\-0016/LTV\-8X7%20series%20%20Rev\.S\.PDF
- Part Type: Isolator
- Manufacturer Part Number: LTV\-817S\-TA

**Pins:**
- A [pin 1]
- C [pin 4]
- E [pin 3]
- K [pin 2]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/cfuentes77/universal\-welding\-remote\-receiver\-pcb\~ga](https://flux.ai/cfuentes77/universal-welding-remote-receiver-pcb~ga).*

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*Generated from [https://flux\.ai/cfuentes77/universal\-welding\-remote\-receiver\-pcb\~ga](https://flux.ai/cfuentes77/universal-welding-remote-receiver-pcb~ga)*