4 layers150 × 107.5 mm
Base
bornier-dev/bornier
Open source EtherCAT slaves for machine tools running LinuxCNC: hardware, firmware and tooling.
517 parts
4 layers34.5 × 34.5 mm
MySXRelay
mczerski/MySXRelay- Size
- 34.5 × 34.5 mm
- Copper layers
- 4
- Thickness
- 1.2 mm
- Parts
- 62
- Nets
- 64
- Pads
- 200
- Tracks, vias
- 578, 52
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Oct 2024
- Updated
- 2 Oct 2026
Overview
MySXRelay is an open-source printed circuit board by mczerski, from the mczerski/MySXRelay repository on GitHub. It is a 4-layer board of 34.5 × 34.5 mm with 62 parts on 64 nets, routed with 578 tracks and 52 vias.
It is built around the ATMEGA328PB-AU, CA-IS3092W and RS485, with the AT25512-TH-T, BL0942 and BP2525D among its other parts. Its parts include 21 resistors, 17 capacitors, 8 diodes, 6 ICs and 3 crystals. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATMEGA328PB-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 27 2KB 32KB 8 Bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog、Touch function TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
CA-IS3092W
SOIC-16-300mil-40℃~+125℃ 150kV/us 3.3V、5V 3.3V、5V 5000 500Kbps Half-Duplex SOIC-16-300mil Isolated RS-485/422 Transceivers with power ROHSChipanalogIsolated RS-485/422 Transceivers With Power
RS485
SOP-81 1 1.2mA 2.5Mbps 256 5V Half-Duplex Transceiver ±4kV SOP-8 RS-485 / RS-422 ICs ROHSGRRS-485 / RS-422 ICs
AT25512-TH-T
TSSOP-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 100 Years 20MHz 512Kbit 5ms SPI TSSOP-8 EEPROM ROHSMicrochip TechnologyEEPROM
BL0942
SSOP-10-150mil-40℃~+85℃ 0.2% 1.218V 10mW 2 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC SSOP-10-150mil Energy Metering ROHSBLEnergy Metering
BP2525D
SOT-33-5ASOT-33-5A AC-DC Controllers and Regulators ROHSBPSAC-DC Controllers And Regulators
PTS120660V010
1206-40℃~+85℃ 1.6Ω 100A 100mA 15Ω 1s 250mA 400mW 60V 1206 Resettable Fuses ROHSEatonResettable Fuses
SMAJ11CA
SMA(DO-214AC)11V 12.2V 18.2V 1uA 21.98A 400W@10/1000us Bidirectional TVS SMA(DO-214AC) ESD and Surge Protection (TVS/ESD) ROHSDOWOESD And Surge Protection (TVS/ESD)
BAT54S
SOT-231 Pair Series Connection 1V@100mA 200mA 2uA@25V 30V 600mA SOT-23 Schottky Diodes ROHSMDDSchottky Diodes
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C9, C13, C14, C15, C16, C17 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R3, R4, R20, R22 |
| 5 | 390k/1% | Resistor_SMD:R_1206_3216Metric | R14, R15, R16, R17, R18 |
| 3 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C8 |
| 3 | 510/1% | Resistor_SMD:R_0603_1608Metric | R10, R11, R13 |
| 3 | 68n/16V | Capacitor_SMD:C_0603_1608Metric | C10, C11, C12 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R19 |
| 2 | 2k | Resistor_SMD:R_0603_1608Metric | R2, R9 |
| 2 | PTS120660V010 | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1, F2 |
| 2 | SMAJ11CA | MySXRelay:D_SMA | D9, D10 |
| 1 | 0R001/1% | Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R12 |
| 1 | 0R3 | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 100n/50V | Capacitor_SMD:C_0402_1005Metric | C4 |
| 1 | 1n4007/1000V | Diode_SMD:D_SOD-123F | D5 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 1u/50V | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 2.2u/450V | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | 220R/1W fusible | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | TH1 |
| 1 | 27 | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 3.6V | Diode_SMD:D_MiniMELF | D4 |
| 1 | 330u/0.6A | MySXRelay:L_Radial_D7.5mm_P3.00mm_Ferrocore_COIL0608 | L1 |
| 1 | 470u/10V | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C7 |
| 1 | AP2127N-3.3 | Package_TO_SOT_SMD:SOT-23 | U5 |
| 1 | AT25512 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | ATmega328PB-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U6 |
| 1 | AVR ISP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | BAT54S | Package_TO_SOT_SMD:SOT-23 | D3 |
| 1 | BL0942 | MySXRelay:BL0942 | U2 |
| 1 | BP2525D | MySXRelay:SOT-33-5A | U3 |
| 1 | CA-IS3092W | MySXRelay:SOIC-16W_7.5x10.3mm_P1.27mm | U1 |
| 1 | E1J/600V | Diode_SMD:D_SOD-123F | D7 |
| 1 | ES1J/600V | Diode_SMD:D_SOD-123F | D6 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D8 |
| 1 | Mains | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | X2 |
| 1 | RS485 | MySXRelay:JST-XH_S_2P-2.54MM | X1 |
| 1 | Relay | MySXRelay:edge_connector | J3 |
| 1 | Switch/LED | MySXRelay:JST-XH_S_3P-2.54MM | X3 |
Questions
How big is the MySXRelay PCB?
It measures 34.5 × 34.5 mm and has 4 copper layers, 1.2 mm thick.
What parts does the MySXRelay use?
62 parts, built around the ATMEGA328PB-AU, CA-IS3092W, RS485 and AT25512-TH-T. 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 MySXRelay KiCad files?
From the mczerski/MySXRelay repository on GitHub, at the commit this page was made from: the board is MySXRelay.kicad_pcb and its schematic MySXRelay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MySXRelay design in my own project?
Its repository states no licence, so its author keeps all rights: ask mczerski before reusing the design.
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