2 layers
4 layers117 × 92 mm
48VERelay
StickOnAStick/48VRelay_essentialRelay Board for 48V ~2.5A.
- Size
- 117 × 92 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 110
- Nets
- 119
- Pads
- 456
- Tracks, vias
- 960, 221
- Pours
- 19
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Jun 2026
- Updated
- 12 Oct 2026
Overview
48VERelay is an open-source printed circuit board by StickOnAStick, from the StickOnAStick/48VRelay_essential repository on GitHub. It is a 4-layer board of 117 × 92 mm with 110 parts on 119 nets, routed with 960 tracks and 221 vias.
It is built around the ESP32-WROOM-32UE-N4, TPS630701RNMR and TLV1117LV33DCYR, with the TVS1800DRVR, ULN2803A and W5500 among its other parts. Its parts include 37 capacitors, 28 resistors, 9 connectors, 8 ICs and 7 switches. It belongs with the ESP32 boards of this library.
Main components
11
ESP32-WROOM-32UE-N4
SMD,19.2x18mm-40℃~+85℃ -88dBm 112mA 19.5dBm 2.4GHz 239mA 3V~3.6V Bluetooth4.2 ESP32-D0WD-V3、ESP32-D0WDR2-V3 UART、SDIO、SPI、I2C、GPIO、ADC、I2S、DAC、Ethernet、TWAI SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TPS630701RNMR
VQFN-15-HR(2.5x3)-40℃~+125℃@(TJ) 1 2.4MHz 2A 2V~16V 50uA 5V Buck-Boost Buck-Boost Built-in Fixed Yes VQFN-15-HR(2.5x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
TLV1117LV33DCYR
SOT-223-40℃~+125℃@(TJ) 0.003%Vout 1 1.2V@(1A) 12V 1A 3.3V 75dB@(120Hz) Fixed Over Current Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJSMSEMIVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsTVS1800DRVR
DFN-6L(2x2)DFN-6L(2x2) ESD and Surge Protection (TVS/ESD) ROHSWuxi MaxinmicroUncategorised
ULN2803A
SOP-18-300mil-40℃~+85℃ 0.93mA 100uA 15pF 20uA 30V 500mA 50V 8 SOP-18-300mil Darlington Transistor Arrays ROHSUMWDarlington Transistor Arrays
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet Controllers
G2RL-1-E DC5
DIP,28.8x12.5mm-40℃~+85℃ 100mΩ 15ms 16A 16A@250VAC、16A@24VDC 300V@DC、440V@AC 400mW 5V 5ms 62.5Ω 8 Non-Polarized - Single Coil One set changeover: 1C (SPDT - changeover) Silver Alloy (Cd-Free) DIP,28.8x12.5mm Power Relays ROHSOmronPower Relays
ABM3C-25.000MHZ-D4Y-T
SMD5032-4P-40℃~+85℃ 18pF 25MHz 50Ω Crystal Oscillator ±30ppm ±30ppm SMD5032-4P Crystals ROHSAbraconCrystals
B4B-PH-SM4-TB
SMD,P=2mm-25℃~+85℃ 1 100V 11.95mm 1x4P 2A 2mm 4 4P 6.6mm 7mm Auxiliary Solder Pin Beige Copper alloy PA PH Surface Mount,Vertical Tin UL94V-0 SMD,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
MH1608-121Y
0603-55℃~+125℃ 1 100mΩ 120Ω@100MHz 2A ±25% 0603 Ferrite Beads ROHSBournsFerrite Beads
XFL4020-152MEC
SMD,4x4mm1.5uH 14.4mΩ 4.6A 9.1A Magnetic Shielded Inductor ±20% SMD,4x4mm Power Inductors ROHSCoilcraftPower Inductors
README
README.mdIgnore me trying to work with ki-cads git management. Project is located at RelatBoard/48VRelay/48VERelay
Parts
110| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C11, C12, C13, C14, C15, C16 |
| 5 | 100k | Resistor_SMD:R_0603_1608Metric | R10, R11, R12, R13, R14 |
| 5 | 2.2k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5 |
| 5 | G2RL-1-E | Relay_THT:Relay_SPDT_Omron_G2RL-1-E | K10, K11, K12, K13, K14 |
| 5 | LED VO-PT2012SEAC | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5 |
| 5 | Screw_Terminal_01x03 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-03P_1x03_P5.00mm | J10, J11, J12, J13, J14 |
| 5 | TestPoint_Pad_D1.0mm | TestPoint:TestPoint_Pad_D1.0mm | +3v3_ETH, +5V, 3V3 Eth, 3V3 MCU, 3V3A |
| 4 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C8, C26, C27 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric | C32, C33, C34, C35 |
| 4 | 33 | Resistor_SMD:R_0603_1608Metric | R7, R8, R16, R17 |
| 4 | 49.9 1% | Resistor_SMD:R_0201_0603Metric | R18, R19, R21, R22 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C28, C29 |
| 3 | 330 | Resistor_SMD:R_0603_1608Metric | R9, R15, R29 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 2 | 10nF | Capacitor_SMD:C_0201_0603Metric | C20, C23 |
| 2 | 18pF | Capacitor_SMD:C_0201_0603Metric | C21, C22 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C36, C37 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C30, C31 |
| 2 | 6.8nF | Capacitor_SMD:C_0201_0603Metric | C17, C19 |
| 2 | TLV1117LV33DCYR | Library:TLV1117-33IDCYR | U9, U10 |
| 1 | GND | ||
| 1 | 0 | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 0.1uF | Capacitor_SMD:C_0201_0603Metric | C7 |
| 1 | 10 1% | Resistor_SMD:R_0201_0603Metric | R20 |
| 1 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 100nF | Capacitor_SMD:C_0201_0603Metric | C25 |
| 1 | 100nF - Ceramic | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 100uF - Electrolytic | Capacitor_SMD:C_Elec_6.3x7.7 | C9 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R25 |
| 1 | 10kΩ | Resistor_SMD:R_0402_1005Metric | R26 |
| 1 | 10uF / 16V | Capacitor_SMD:C_0805_2012Metric | C18 |
| 1 | 12 | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | 12.4k 1% - Ethernet external reference | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R24 |
| 1 | 1uF - Ceramic | Capacitor_SMD:C_0805_2012Metric | C24 |
| 1 | 22nF | Capacitor_SMD:C_0201_0603Metric | C6 |
| 1 | 3A 32V | Fuse:Fuse_1206_3216Metric | U4 |
| 1 | 4.7uF - Eth Reference Cap | Capacitor_SMD:C_0201_0603Metric | C5 |
| 1 | ABM3C-25.000MHZ-D4Y-T | Library:CRYSTAL_ABM3C_ABR-M | Y2 |
| 1 | B4B-PH-SM4-TB | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | ENABLE | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW5 |
| 1 | ESP32-WROOM-32UE | RF_Module:ESP32-WROOM-32UE | U1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | LOGO | LOGO | G*** |
| 1 | MH1608-121Y | Library:IND_BOURNS_MH1608 | L1 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW6 |
| 1 | RJ45_Hanrun_HR911105A_Horizontal | Connector_RJ:RJ45_Hanrun_HR911105A_Horizontal | J2 |
| 1 | TC2050 | Connector:Tag-Connect_TC2050-IDC-NL_2x05_P1.27mm_Vertical | J4 |
| 1 | TPS630701RNMR | Library:RNM0015A | U5 |
| 1 | TVS1800DRVR | Library:DRV0006A_NV | U7 |
| 1 | TestPoint_Pad_D1.5mm | TestPoint:TestPoint_Pad_D1.5mm | 12V |
| 1 | ULN2803A | Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm | U2 |
| 1 | W5500 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | XFL4020-152MEC | Library:IND_XFL4020_COC-M | L3 |
The 106 most common of 110 parts.
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Questions
How big is the 48VERelay PCB?
It measures 117 × 92 mm and has 4 copper layers, 1.61 mm thick.
What parts does the 48VERelay use?
110 parts, built around the ESP32-WROOM-32UE-N4, TPS630701RNMR, TLV1117LV33DCYR and TVS1800DRVR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 48VERelay KiCad files?
From the StickOnAStick/48VRelay_essential repository on GitHub, at the commit this page was made from: the board is RelatBoard/48VRelay/48VERelay/48VERelay.kicad_pcb and its schematic RelatBoard/48VRelay/48VERelay/48VERelay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 48VERelay design in my own project?
Its repository states no licence, so its author keeps all rights: ask StickOnAStick before reusing the design.