MCP4131-104E/SN Microchip Variable Resistor (Small Outline Packages) In Stock

Name: MCP4131-104E/SN
Brand: Microchip
SKU: MCP4131-104E/SN
Availability: InStock

MCP4131-104E/SN is a single-channel 100 kohm digital potentiometer from Microchip in an SOIC-8 package with SPI increment/decrement control interface. It provides 128 wiper positions for precise resistance adjustment under software control. Used in gain adjustment circuits, signal conditioning, LCD contrast control, and audio volume control applications.

ACTIVEVariable ResistorVerified Jun 2026

Package / Visual Reference

MCP4131-104E/SNSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: MCP4131-104E/SN Datasheet PDF
Category: Variable Resistor
Price: From $0.5680(MOQ 25)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP4131-104E/SN?

Single-channel 100 kohm digital potentiometer with 128 wiper tap positions
SPI increment/decrement control interface for simple host microcontroller integration
SOIC-8 package enables standard SMT assembly with minimal footprint
0.1 kHz bandwidth suitable for audio and low-frequency signal adjustment
RoHS-compliant lead-free construction per JEDEC e3 standard

What is MCP4131-104E/SN used for?

MCP4131-104E/SN is commonly used in audio equipment for software-controlled volume and tone adjustment, replacing mechanical potentiometers with digitally programmable equivalents. In analog front-end designs, it trims gain stages and offset voltages in operational amplifier circuits without physical tuning. Industrial calibration systems also use it for precision resistance setting in bridge and sensor conditioning circuits.

What are the specifications of MCP4131-104E/SN?

Pbfree Code	Yes
Manufacturer Package Code	SOIC-8
Factory Lead Time	7Weeks
YTEOL	9
Bandwidth-Nom	0.1kHz
Control Interface	INCREMENT/DECREMENT
Converter Type	DIGITAL POTENTIOMETER
JESD-30 Code	R-PDSO-G8
JESD-609 Code	e3
Number of Functions	1
Number of Positions	129
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP8,.25
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Resistance Law	LINEAR
Resistance Tolerance-Max	20%
Resistor Terminal Voltage-Max	5V
Supply Current-Max	1mA
Supply Voltage-Nom	5V
Surface Mount	YES
Technology	CMOS
Temperature Coefficient-Nom	150ppm/°C
Temperature Grade	AUTOMOTIVE
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Total Resistance-Nom	100000Ω
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Mainland China, Thailand

Where can I find the MCP4131-104E/SN datasheet?

MCP4131-104E/SN Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP4131-104E/SN?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How many wiper positions does MCP4131-104E/SN provide, and what resistance step size does that correspond to for a 100 kohm pot?

MCP4131-104E/SN provides 128 wiper positions across its 100 kohm end-to-end resistance, resulting in a nominal step size of approximately 781 ohm per increment step. This resolution is sufficient for fine-grained gain trimming and volume control in audio and sensor conditioning circuits.

Which SPI command modes does MCP4131-104E/SN support, and how does that affect firmware complexity?

MCP4131-104E/SN uses an increment/decrement control interface over SPI, requiring only simple UP/DOWN commands rather than full address-register writes. This simplifies firmware to a few GPIO toggle sequences or SPI byte transfers, reducing code complexity compared to full volatile-register digital potentiometers, at the cost of requiring the host to track wiper position in software.

What is the factory lead time for MCP4131-104E/SN, and what risk does that pose for production planning?

MCP4131-104E/SN carries a 7-week factory lead time from Microchip's distribution network. For production runs needing consistent supply, procurement teams should maintain 8 to 12 weeks of safety stock or establish consignment agreements with distributors to avoid line stoppages when demand spikes in the SOIC-8 digital potentiometer market.

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AvailabilityIn Stock

Reference Price (USD)

From $0.5680

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
25+	$0.7000	$17.50
100+	$0.6400	$64.00
300+	$0.6350	$190.50
500+	$0.6340	$317.00
1000+	$0.6100	$610.00
7500+	$0.5680	$4260.00

pcs

Unit price: $0.7000 · Total: $17.50

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP4131-104E/SN Microchip Variable Resistor (Small Outline Packages) In Stock

What are the key features of MCP4131-104E/SN?

What is MCP4131-104E/SN used for?

What are the specifications of MCP4131-104E/SN?

Compliance & Regulatory

Where can I find the MCP4131-104E/SN datasheet?

What are equivalent replacements for MCP4131-104E/SN?

Frequently Asked Questions

How many wiper positions does MCP4131-104E/SN provide, and what resistance step size does that correspond to for a 100 kohm pot?

Which SPI command modes does MCP4131-104E/SN support, and how does that affect firmware complexity?

What is the factory lead time for MCP4131-104E/SN, and what risk does that pose for production planning?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

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About Microchip

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