4 layers144.1 × 93.3 mm
4 layers143.1 × 87.6 mm
Thermistor Expansion Module
Gad9889/Thermistor-Expansion-ModuleKiCad project files remain at the repository root. Hierarchical schematic sheets are organized under schematics/, with connector sheets in schematics/connectors/ and gate sheets in schematics/gates/.
- Size
- 143.1 × 87.6 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 114
- Nets
- 236
- Pads
- 745
- Tracks, vias
- 1,873, 439
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 20 Aug 2026
- Updated
- 27 Aug 2026
Overview
Thermistor Expansion Module is an open-source printed circuit board by Gad9889, from the Gad9889/Thermistor-Expansion-Module repository on GitHub. It is a 4-layer board of 143.1 × 87.6 mm with 114 parts on 236 nets, routed with 1,873 tracks and 439 vias.
It is built around the ISO1042BDWVR, TSR 0.5-2450 and UCC12040DVER, with the CD74HC4067SM96 and ESD2CAN24DBZRQ1 among its other parts. Its parts include 28 capacitors, 27 resistors, 15 ICs, 10 connectors and 6 diodes. It belongs with the STM32 boards of this library.
Main components
5
ISO1042BDWVR
SOIC-8-300mil-40℃~+125℃ 1.71V~5.5V、4.5V~5.5V 5Mbps 73.4mA CAN FD Transceiver SOIC-8-300mil CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
TSR 0.5-2450
SIP,11.5x7.6mm-40℃~+85℃ -5V、5V 10.2mm 11.5mm 20mVp-p 300mA、500mA 330uF、680uF 6.5V~36V、7V~31V 7.55mm 850kHz 90% Short Circuit Protection、Automatic fault recovery ±2% SIP,11.5x7.6mm DC-DC Power Modules ROHSYLPTECDC-DC Power Modules
UCC12040DVER
SOIC-16-300milDC-DC ConvertersTexas Instruments
CD74HC4067SM96
SSOP-24-208mil-55℃~+125℃ 15ns 16 16:1 2V~6V 5pF 70Ω 89MHz SSOP-24-208mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
ESD2CAN24DBZRQ1
SOT-23-55℃~+150℃ 2 210W@8/20us 24V 35.5V 37V 3pF 5.7A@8/20us 50nA Bidirectional ESD IEC 61000-4-2 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD And Surge Protection (TVS/ESD)
README
README.mdThermistor Expansion Module
KiCad project files remain at the repository root. Hierarchical schematic sheets
are organized under schematics/, with connector sheets in
schematics/connectors/ and gate sheets in schematics/gates/.
Project-local symbols, footprints, and STEP models are in symbols/,
footprints.pretty/, and 3dmodels/ respectively. Supporting data is in
docs/, while preserved vendor source files are in source_assets/.
Parts
114| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R10, R12, R13, R14, R15, R16, R17, R18, R19, R26, R27, R28 +3 |
| 18 | TestPoint | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | +2V5, +3V3, +5V, IN1, IN2, IN3, IN5, IN12, IN13, IN14, IN15, IN17, MC0, MC1, MC2, MC3 +2 |
| 16 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C3, C5, C6, C10, C17, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28 |
| 10 | CD74HC4067SM | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U1, U2, U3, U4, U5, U6, U7, U8, U9, U11 |
| 8 | Conn_02x12_Odd_Even | Project_Footprints:S24BPADSS1LFSN | J2, J3, J4, J5, J6, J7, J8, J9 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C13, C14, C18 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric | C4, C7, C9 |
| 3 | 3K3 | Resistor_SMD:R_0603_1608Metric | R21, R22, R25 |
| 3 | 680R | Resistor_SMD:R_0603_1608Metric | R29, R30, R31 |
| 3 | GREEN | LED_SMD:LED_0805_2012Metric | D5, D6, D9 |
| 2 | 10pf | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | D_Schottky | Diode_SMD:D_SOD-123F | D1, D2 |
| 1 | +3V3A | TestPoint:TestPoint_Pad_1.0x1.0mm | TP33 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 120R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20 |
| 1 | 120R | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 4u7 | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15 |
| 1 | 8Mhz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_ST_STDC14 | Connector_PinHeader_1.27mm:PinHeader_2x07_P1.27mm_Vertical | J1 |
| 1 | D_TVS | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | D3 |
| 1 | ESD2CAN24DBZRQ1 | Project_Footprints:SOT95P237X112-3N | IC3 |
| 1 | ISO1042BDWVR | Project_Footprints:TI_ISO1042BDWVR_SOIC127P1150X280-8N | IC1 |
| 1 | LED_KRGB | LED_SMD:LED_Avago_PLCC4_3.2x2.8mm_CW | KRGB |
| 1 | Molex4Pin | Connector_Molex:Molex_Micro-Fit_3.0_43045-0400_2x02_P3.00mm_Horizontal | CAN_CONN1 |
| 1 | S10B-PADSS-1_LF__SN_ | Project_Footprints:S10BPADSS1LFSN | J10 |
| 1 | STM32G431CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U10 |
| 1 | TSR0.5-2450 | Converter_DCDC:Converter_DCDC_TRACO_TSR0.5-24xx_TSR0.5-24xxx_THT | U13 |
| 1 | TestPoint | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP36 |
| 1 | UCC12040DVER | Project_Footprints:TI_UCC12040DVER_SOIC127P1030X265-16N | IC2 |
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Questions
How big is the Thermistor Expansion Module PCB?
It measures 143.1 × 87.6 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Thermistor Expansion Module use?
114 parts, built around the ISO1042BDWVR, TSR 0.5-2450, UCC12040DVER and CD74HC4067SM96. 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 Thermistor Expansion Module KiCad files?
From the Gad9889/Thermistor-Expansion-Module repository on GitHub, at the commit this page was made from: the board is Thermistor Expansion Module.kicad_pcb and its schematic Thermistor Expansion Module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Thermistor Expansion Module design in my own project?
Its repository states no licence, so its author keeps all rights: ask Gad9889 before reusing the design.