# ESP32 8-Channel SSR RTD Controller ## Description Industrial ESP32-based mains-powered controller with 220 VAC input, isolated 5 V supply, 8 SSR-controlled high-current AC output channels, and a single RTD temperature input. Layout and safety constraints must preserve reinforced isolation and separation between hazardous mains/high-current paths and low-voltage control circuitry. ## Project Details - **Owner:** beankonducta - **Created:** 4/18/2026 - **Last Updated:** 4/18/2026 - **Visibility:** Public ## Key Components ### F1 — [64900001039](https://www.flux.ai/adrian95/64900001039.md) - Package: Through Hole - Manufacturer Name: Littelfuse Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Mains input overcurrent protection holder - Manufacturer Part Number: 64900001039 - Datasheet URL: https://www.littelfuse.com/assetdocs/649-series-fuseholder-data-sheet?assetguid=273c538e-be34-4663-90f2-d0254c30b851 - Part Type: Fuse - Current Rating: 6.3A - Role: Fuse Holder **Pins:** - P1 [pin 1] - P2 [pin 2] ### F2 — [5F.2500212000R1(5)](https://www.flux.ai/lcsc/5fp2500212000r15.md) - Part Type: Cartridge Fuses - Package: Cartridge Fuse - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Glass-Fuses_Glass-tube-fuse-Double-hat-line_C140510.html - Package or Case Code: FUSE-TH_BD5.8-L22.5-P26.50-D0.7 - Manufacturer Name: xcfuse(旭程) - Manufacturer Part Number: 5F.2500212000R1(5) - Role: Input Fuse - LCSC Part Number: C140510 - Datasheet URL: https://lcsc.com/product-detail/Glass-Fuses_Glass-tube-fuse-Double-hat-line_C140510.html - Role Details: Primary overcurrent protection on AC line input **Pins:** - 1 [pin 1] - 2 [pin 2] ### K1 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Manufacturer Part Number: MOC3063M - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Manufacturer Name: Semiconductor Components Industries - Part Type: Relay - Role: SSR Driver Isolation - Package: DIP-6 **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K2 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Package: DIP-6 - Manufacturer Name: Semiconductor Components Industries - Part Type: Relay - Role: SSR Driver Isolation - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Manufacturer Part Number: MOC3063M **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K3 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Manufacturer Part Number: MOC3063M - Manufacturer Name: Semiconductor Components Industries - Part Type: Relay - Role: SSR Driver Isolation - Package: DIP-6 **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K4 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Manufacturer Part Number: MOC3063M - Package: DIP-6 - Role: SSR Driver Isolation - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Part Type: Relay - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K5 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Part Type: Relay - Manufacturer Name: Semiconductor Components Industries - Role: SSR Driver Isolation - Manufacturer Part Number: MOC3063M - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Package: DIP-6 - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K6 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Manufacturer Name: Semiconductor Components Industries - Part Type: Relay - Package: DIP-6 - Manufacturer Part Number: MOC3063M - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Role: SSR Driver Isolation - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K7 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Part Type: Relay - Manufacturer Name: Semiconductor Components Industries - Role: SSR Driver Isolation - Package: DIP-6 - Manufacturer Part Number: MOC3063M - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### K8 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Role: SSR Driver Isolation - Manufacturer Part Number: MOC3063M - Package: DIP-6 - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Role Details: Optotriac driver providing logic-to-mains isolation for each channel - Manufacturer Name: Semiconductor Components Industries - Part Type: Relay **Pins:** - ~ [pin 1] - ~ [pin 6] - ~ [pin 2] - ~ [pin 4] - NC [pin 5] - NC [pin 3] ### PS1 — [BAC05S05DC](https://www.flux.ai/kicad-part-library/bac05s05dc.md) - Part Type: Converter ACDC - Role Details: Derives isolated 5 V rail from 220 VAC mains input - Role: Isolated AC-DC - Manufacturer Part Number: BAC05S05DC - Package or Case Code: Converter_ACDC_Murata_BAC05SxxDC_THT - Datasheet URL: https://www.murata.com/products/productdata/8809982558238/KAC-BAC05.pdf - Package: Module **Pins:** - -Vo [pin 4] - +Vo [pin 5] - AC/L [pin 2] - AC/N [pin 1] - NC [pin 3] ### Q1 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Manufacturer Name: ST(意法半导体) - Role: AC Load Switch - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - LCSC Part Number: C283477 - Part Type: TRIACs - Package: TO-3P/TO-220 - JLCPCB Part Class: Extended Part - Role Details: High-current AC switching element for SSR output channel **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q2 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - JLCPCB Part Class: Extended Part - Part Type: TRIACs - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - LCSC Part Number: C283477 - Role Details: High-current AC switching element for SSR output channel - Package: TO-3P/TO-220 - Manufacturer Name: ST(意法半导体) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Role: AC Load Switch - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q3 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - Manufacturer Name: ST(意法半导体) - Package: TO-3P/TO-220 - JLCPCB Part Class: Extended Part - Role: AC Load Switch - Role Details: High-current AC switching element for SSR output channel - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - Manufacturer Part Number: BTA26-600BWRG - LCSC Part Number: C283477 - Part Type: TRIACs **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q4 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - Manufacturer Name: ST(意法半导体) - Role Details: High-current AC switching element for SSR output channel - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Role: AC Load Switch - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - JLCPCB Part Class: Extended Part - Package: TO-3P/TO-220 - Part Type: TRIACs - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - LCSC Part Number: C283477 **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q5 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - JLCPCB Part Class: Extended Part - Role: AC Load Switch - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - LCSC Part Number: C283477 - Part Type: TRIACs - Package: TO-3P/TO-220 - Role Details: High-current AC switching element for SSR output channel - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - Manufacturer Name: ST(意法半导体) **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q6 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - Role: AC Load Switch - Manufacturer Name: ST(意法半导体) - Package: TO-3P/TO-220 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - JLCPCB Part Class: Extended Part - Part Type: TRIACs - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - Role Details: High-current AC switching element for SSR output channel - LCSC Part Number: C283477 **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q7 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: BTA26-600BWRG - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - LCSC Part Number: C283477 - Part Type: TRIACs - Role: AC Load Switch - Package: TO-3P/TO-220 - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - Role Details: High-current AC switching element for SSR output channel - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Manufacturer Name: ST(意法半导体) **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q8 — [BTA26-600BWRG](https://www.flux.ai/lcsc/bta26-600bwrg.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-BTA26-600BWRG_C283477.pdf - Role: AC Load Switch - Package or Case Code: TO-3PN_L15.8-W5.0-P5.45-L - Package: TO-3P/TO-220 - Manufacturer Name: ST(意法半导体) - Role Details: High-current AC switching element for SSR output channel - JLCPCB Part Class: Extended Part - LCSC Part Number: C283477 - Product Info Url: https://lcsc.com/product-detail/Thyristors-TRIACs_STMicroelectronics-BTA26-600BWRG_C283477.html - Manufacturer Part Number: BTA26-600BWRG - Part Type: TRIACs **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### RV1 — [MOV-14D431K](https://www.flux.ai/adrian95/mov-14d431k.md) - Manufacturer Part Number: MOV-14D431K - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/MOV14D.pdf - Role Details: MOV across AC input to clamp mains surges - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Varistor - Manufacturer Name: Bourns Inc. - Role: Surge Protection - Package: Disc 14mm **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ESP32-WROOM-32E](https://www.flux.ai/vasyl/esp32-wroom-32e.md) - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: ESP32 module controlling 8 AC SSR outputs and one SPI RTD interface - Manufacturer Part Number: ESP32-WROOM-32 - Role: Main Controller - Package: Module - Part Type: Integrated Circuit - Manufacturer Name: Espressif Systems **Pins:** - EN [pin 3] - GND [pin 38] - GND [pin 39] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0/IO3 [pin 34] - SCK/CLK [pin 20] - SCS/CMD [pin 19] - SDI/SD1 [pin 22] - SDO/SD0 [pin 21] - SENSOR_VN [pin 5] - SENSOR_VP [pin 4] - SHD/SD2 [pin 17] - SWP/SD3 [pin 18] - TXD0/IO1 [pin 35] - VDD [pin 2] ### U10 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Part Type: Connector - Manufacturer Part Number: 282837-2 - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Package: Terminal Block - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Manufacturer Name: TE Connectivity(泰科电子) - Role Details: SSR channel 6 AC output placeholder; final connector must meet >=20 A and mains safety rating - Role: Load Output Connector - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### U11 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - Role: Load Output Connector - Package: Terminal Block - Manufacturer Name: TE Connectivity(泰科电子) - JLCPCB Part Class: Extended Part - LCSC Part Number: C592976 - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Manufacturer Part Number: 282837-2 - Role Details: SSR channel 7 AC output placeholder; final connector must meet >=20 A and mains safety rating - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### U12 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Manufacturer Name: TE Connectivity(泰科电子) - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - Role Details: SSR channel 8 AC output placeholder; final connector must meet >=20 A and mains safety rating - Manufacturer Part Number: 282837-2 - Part Type: Connector - Role: Load Output Connector - Package: Terminal Block - Package or Case Code: CONN-TH_2P-P5.08_282837-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U13 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Manufacturer Part Number: 282837-2 - Part Type: Connector - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Package: Terminal Block - Manufacturer Name: TE Connectivity(泰科电子) - JLCPCB Part Class: Extended Part - Role Details: RTD sensor connector; currently wired as a simple 2-wire RTD placeholder to the MAX31865 front-end - Role: RTD Connector - LCSC Part Number: C592976 - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### U14 — [PC817X2NSZ9F](https://www.flux.ai/lcsc/pc817x2nsz9f.md) - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1912111437_Sharp-Microelectronics-PC817X2NSZ9F_C390734.pdf - Product Info Url: https://lcsc.com/product-detail/DIP-Optocouplers_Sharp-Microelectronics-PC817X2NSZ9F_C390734.html - Package: DIP-4 - Package or Case Code: DIP-4_L6.4-W4.6-P2.54-LS7.6-BL - Part Type: Optocouplers - Phototransistor Output - LCSC Part Number: C390734 - Role Details: Optional mains sense or status isolation feedback channel - JLCPCB Part Class: Extended Part - Role: Isolation Feedback - Manufacturer Part Number: PC817X2NSZ9F - Manufacturer Name: SHARP(夏普) **Pins:** - Anode [pin 1] - Cathode [pin 2] - Collector [pin 4] - Emitter [pin 3] ### U2 — [NCP176BMX330TCG](https://www.flux.ai/ryanf/ncp176bmx330tcg.md) - Role: LDO Regulator - Package: XDFN - Manufacturer Name: onsemi - Role Details: Regulates isolated 5 V rail down to 3.3 V for ESP32 and logic - Part Type: Linear Voltage Regulator - Package or Case Code: XDFN6 - Manufacturer Part Number: NCP176BMX330TCG - Datasheet URL: https://www.mouser.com/datasheet/2/308/1/NCP176_D-2316728.pdf **Pins:** - EN [pin 4] - FB [pin 2] - GND [pin 3] - IN [pin 6] - N/C [pin 5] - OUT [pin 1] ### U3 — [MAX31865AAP+](https://www.flux.ai/vasy_skral/max31865aapplus.md) - Part Type: Integrated Circuit - Datasheet URL: https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf - Role: RTD Interface - Role Details: SPI RTD-to-digital converter for one RTD channel - Manufacturer Name: Maxim Integrated - Manufacturer Part Number: MAX31865AAP+ - Package: SSOP-20 **Pins:** - ~CS [pin 16] - ~DRDY [pin 1] - BIAS [pin 4] - DGND [pin 18] - DVDD [pin 2] - FORCE- [pin 12] - FORCE+ [pin 8] - FORCE2 [pin 9] - GND [pin 13] - GND [pin 19] - ISENSOR [pin 7] - NC [pin 20] - REFIN- [pin 6] - REFIN+ [pin 5] - RTDIN- [pin 11] - RTDIN+ [pin 10] - SCLK [pin 15] - SDI [pin 14] - SDO [pin 17] - VDD [pin 3] ### U4 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Package: Terminal Block - Manufacturer Part Number: 282837-2 - Part Type: Connector - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - Role: AC Input Connector - Manufacturer Name: TE Connectivity(泰科电子) - JLCPCB Part Class: Extended Part - Role Details: Mains input terminal block placeholder; final connector must meet >=20 A and mains safety rating - LCSC Part Number: C592976 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U5 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Manufacturer Part Number: 282837-2 - Part Type: Connector - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Role: Load Output Connector - Manufacturer Name: TE Connectivity(泰科电子) - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - Package: Terminal Block - Role Details: SSR channel 1 AC output placeholder; final connector must meet >=20 A and mains safety rating **Pins:** - 1 [pin 1] - 2 [pin 2] ### U6 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Role Details: SSR channel 2 AC output placeholder; final connector must meet >=20 A and mains safety rating - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - LCSC Part Number: C592976 - Role: Load Output Connector - JLCPCB Part Class: Extended Part - Manufacturer Name: TE Connectivity(泰科电子) - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Part Type: Connector - Manufacturer Part Number: 282837-2 - Package: Terminal Block **Pins:** - 1 [pin 1] - 2 [pin 2] ### U7 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Package: Terminal Block - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Role Details: SSR channel 3 AC output placeholder; final connector must meet >=20 A and mains safety rating - Part Type: Connector - Manufacturer Part Number: 282837-2 - Role: Load Output Connector - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Manufacturer Name: TE Connectivity(泰科电子) **Pins:** - 1 [pin 1] - 2 [pin 2] ### U8 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Role: Load Output Connector - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Package: Terminal Block - Manufacturer Name: TE Connectivity(泰科电子) - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Part Type: Connector - Role Details: SSR channel 4 AC output placeholder; final connector must meet >=20 A and mains safety rating - Manufacturer Part Number: 282837-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U9 — [282837-2](https://www.flux.ai/lcsc/282837-2.md) - Package: Terminal Block - Datasheet URL: https://www.farnell.com/datasheets/3257301.pdf - LCSC Part Number: C592976 - JLCPCB Part Class: Extended Part - Manufacturer Name: TE Connectivity(泰科电子) - Role: Load Output Connector - Role Details: SSR channel 5 AC output placeholder; final connector must meet >=20 A and mains safety rating - Package or Case Code: CONN-TH_2P-P5.08_282837-2 - Part Type: Connector - Manufacturer Part Number: 282837-2 **Pins:** - 1 [pin 1] - 2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/beankonducta/esp32-8-channel-ssr-rtd-controller](https://www.flux.ai/beankonducta/esp32-8-channel-ssr-rtd-controller).* --- *Generated from [https://www.flux.ai/beankonducta/esp32-8-channel-ssr-rtd-controller](https://www.flux.ai/beankonducta/esp32-8-channel-ssr-rtd-controller)*