component
MCP4131-104E
Public Made by Adomby adom
Microchip Tech Digital Potentiometers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMCP4131-104E
Microchip Tech · Digital Potentiometers · SOIC-8
MCP4131-104E from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CS | input | SPI chip select input, high-voltage tolerant up to 12.5 V (VDD ≥ 4.5 V); forcing to VIL enables normal serial commands, forcing to VIHH enables high-voltage serial commands; internal smart pull-up holds pin at VIH when undriven. |
| 2 | SCK | input | SPI serial clock input, high-voltage tolerant; supports up to 10 MHz for VDD = 2.7 V to 5.5 V and up to 1 MHz for VDD = 1.8 V to 2.7 V; data is latched on the rising edge (Modes 0,0 and 1,1). |
| 3 | SDI/SDO | bidirectional | Multiplexed SPI serial data input/output (MCP41X1 only); operates as SDI (high-voltage tolerant input) during write/increment/decrement commands and switches to open-drain SDO output with internal pull-up after address/command bits are received during a read command; maximum read clock 250 kHz without external pull-up. |
| 4 | VSS | power_in | Device ground reference; maximum current out of VSS pin is 100 mA. |
| 5 | P0A | passive | Potentiometer 0 Terminal A; fixed full-scale end of the 100 kΩ (±20 %) resistor network corresponding to wiper code 0x80 (7-bit full-scale); voltage must be within VSS to VDD, maximum current ±2.5 mA; disconnectable via TCON register R0A bit. |
| 6 | P0W | passive | Potentiometer 0 Wiper terminal; adjustable tap of the 100 kΩ resistor network with 75 Ω typical wiper resistance (160 Ω max at VDD = 5.5 V, IW = 2.0 mA); voltage must be within VSS to VDD, maximum current ±2.5 mA; disconnectable via TCON register R0W bit. |
| 7 | P0B | passive | Potentiometer 0 Terminal B; fixed zero-scale end of the 100 kΩ resistor network corresponding to wiper code 0x00; voltage must be within VSS to VDD, maximum current ±2.5 mA; disconnectable via TCON register R0B bit. |
| 8 | VDD | power_in | Positive power supply input; specified operating range 2.7 V to 5.5 V (analog characteristics), 1.8 V to 2.7 V for serial interface only; maximum current into VDD pin is 100 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Data Acquisition |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
MCP4131-104E - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mcp4131-104e-etched.step/mcp4131-104e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcp4131-104e.step/mcp4131-104e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (88 pp, sha256
6c60b083b2ef0a92, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).