2 layers82.6 × 76.2 mm
Mss cascade basic
IowaScaledEngineering/mss-cascade
Integrated Cascade Module for Free-mo Modular Signal System
111 parts
2 layers127 × 76.2 mm
Mss siding test
IowaScaledEngineering/mss-switchMSS Basic Siding End Controller
- Size
- 127 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 161
- Nets
- 111
- Pads
- 467
- Tracks, vias
- 1,201, 205
- Pours
- 15
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 11 Sep 2024
- Updated
- 6 Jan 2026
Overview
Mss siding test is an open-source printed circuit board by IowaScaledEngineering, from the IowaScaledEngineering/mss-switch repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 127 × 76.2 mm with 161 parts on 111 nets, routed with 1,201 tracks and 205 vias.
It is built around the ATTINY861A-SU, AP63205WU and 74HC4049D, with the PCA9555PW, SM04B-SRSS-TB and AGQ200A4H among its other parts. Its parts include 42 resistors, 21 capacitors, 19 connectors, 16 diodes and 6 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATTINY861A-SU
SOIC-20-300mil-40℃~+85℃ 1.8V~5.5V 10bit 16 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH SOIC-20-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
74HC4049D
SO-16-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、4.4V、5.9V 22ns@6.0V,50pF 2V~6V 400mV 40uA 5.2mA 5.2mA 500mV、1.35V、1.8V 6 74HC SO-16 Inverters ROHSNexperiaInverters
PCA9555PW
TSSOP-24-40℃~+85℃ 1.1uA 16 2.3V~5.5V 3mA 400kHz 8 I2C、SMBus Interrupt Output Reset function、Cascade and address expansion TSSOP-24 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
SM04B-SRSS-TB
Header SR 1.0 SMT side entry, 1mm pitchJSTUncategorised
AGQ200A4H
SMD,7.2x10.6mm-40℃~+85℃ 100mΩ 110V@DC、125V@AC 140mW 145Ω 2A 300mA@125VAC、1A@30VDC、2A@30VDC 4.5V 4ms 4ms AgPd + Gold Plated Two groups of conversions: 2C(Double-pole double-throw conversion) SMD,P=2.2mm Signal Relays ROHSPanasonicSignal Relays
SMAJ18A-TP
SMA-55℃~+175℃ 13.7A@10/1000us 18V 1uA 22.1V 29.2V 400W@10/1000us TVS Unidirectional SMA ESD and Surge Protection (TVS/ESD) ROHSMicro Commercial ComponentsTVS
JS202011SCQN
SMD-40℃~+85℃ 300mA 5,000 cycles 5.5mm 6V DPDT Rectangular Columnar SMD(SMT) Tab Surface Mount,Vertical SMD Slide Switches ROHSC&KSlide Switches
ZXMS6004FF
SOT-23F-40℃~+125℃ 1 1.3A 350mΩ 60V Active High Low Side Switch SOT-23F Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches
README
README.mdmss-switch
ISE SimpleSig Switch Signal Basic MSS Complex Cascade Node
Parts
161| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 10k | Resistor_SMD:R_0805_2012Metric | R16, R17, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34 +8 |
| 23 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP2, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23 +7 |
| 17 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4, JP6, JP7, JP8, JP10, JP11, JP12, JP13, JP16, JP17, JP18, JP19, JP20 +1 |
| 14 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C2, C7, C8, C9, C10, C12, C13, C14, C15, C16, C17, C18, C19, C21 |
| 13 | 330 | Resistor_SMD:R_0805_2012Metric | R3, R4, R5, R6, R7, R8, R9, R10, R12, R13, R14, R15, R20 |
| 12 | CDBM140G | ISE_Generic:SOD-123T | D1, D2, D4, D5, D6, D9, D11, D12, D13, D14, D15, D16 |
| 6 | Screw_Terminal_01x02 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type059_RT06303HBWC_1x03_P3.50mm_Horizontal | J5, J6, J7, J9, J10, J19 |
| 5 | 1k | Resistor_SMD:R_0805_2012Metric | R1, R2, R11, R18, R19 |
| 4 | Molex 0532610471 | Connector_Molex:Molex_PicoBlade_53261-0471_1x04-1MP_P1.25mm_Horizontal | J1, J2, J11, J12 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | SM04B-SRSS | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J14, J15, J16, J17 |
| 4 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP5, JP14, JP15, JP21 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C3, C6, C20 |
| 3 | 8P8C | Connector_RJ:RJ45_Amphenol_54602-x08_Horizontal | J4, J8, J13 |
| 3 | AGQ200A4H | ISE_UltraLibrarian:RELAY_AGQ_A_PAN | K1, K2, K3 |
| 3 | SMAJ18A-TP | Diode_SMD:D_SMA | D3, D7, D10 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C4, C5 |
| 2 | 4.7uH | ISE_UltraLibrarian:MSS6132-xxxMLC | L1, L2 |
| 2 | 74HC4049 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U3, U4 |
| 2 | JS202011SCQN | ISE_UltraLibrarian:SW_JS202011SCQN | SW1, SW2 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 68uF | Capacitor_SMD:CP_Elec_6.3x5.8 | C1 |
| 1 | AP3012 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | ATtiny861A-S | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U6 |
| 1 | AVR-ISP | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J18 |
| 1 | DRDC3105-7 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | GREEN LED | LED_SMD:LED_0805_2012Metric | D8 |
| 1 | PCA9555PW | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U5 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_RND:TerminalBlock_RND_205-00012_1x02_P5.00mm_Horizontal | J3 |
| 1 | ZXMS6004FF | Package_TO_SOT_SMD:SOT-23 | Q1 |
Questions
How big is the Mss siding test PCB?
It measures 127 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mss siding test use?
161 parts, built around the ATTINY861A-SU, AP63205WU, 74HC4049D and PCA9555PW. 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 Mss siding test KiCad files?
From the IowaScaledEngineering/mss-switch repository on GitHub, at the commit this page was made from: the board is kicad/mss-switch-test/mss-siding-test.kicad_pcb and its schematic kicad/mss-switch-test/mss-siding-test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mss siding test design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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