{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP4661T-103E/ML","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP4661T-103E-ML","canonicalUrl":"https://icboms.com/microchip/MCP4661T-103E-ML","factsUrl":"https://icboms.com/api/mcp/products/MCP4661T-103E%2FML","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MCP4661T-103E/ML digital potentiometer, dual 10k ohm, 257 taps, I²C interface, non-volatile memory, linear taper, 16-QFN package.","salesMarkdown":"## Dual 10k pot with 257 taps — fine trim for analog trim The MCP4661T-103E/ML is a dual-channel digital potentiometer with a 10k ohm end-to-end resistance and 257 taps per channel, giving a step size of roughly 39 ohms between adjacent wiper positions. That resolution is enough for precision gain setting in an op-amp stage or for trimming a sensor bridge offset without external trim pots. The wiper resistance is 75 ohms typical, which matters at the low end of the resistance range — when the wiper is at the B terminal, the residual resistance adds a small offset that the downstream circuit sees. ## Non-volatile wiper — no re-init on power-up The memory type is non-volatile, so the wiper position is stored across power cycles. This is the difference between a part that holds its calibration after a brownout and one that resets to mid-scale every time the rail comes up. For an adjustable bias supply or a factory-calibrated sensor module, that saves a boot-time write sequence. ## I²C interface — two-wire bus, multiple devices Communication is over I²C, with a selectable address feature that lets you put two or more of these on the same bus without address conflicts. The mute feature allows the wiper to be disconnected from the high side, which is useful for power-on mute circuits or to force a known output state during initialization. ## 16-QFN 4x4mm — small footprint with thermal pad The package is a 16-lead QFN with an exposed pad, 4x4mm body. The exposed pad needs a thermal via pattern under it if the part dissipates more than a few milliwatts — the pad is tied to VSS and acts as the primary heat path. The tape-and-reel option is the standard for automated pick-and-place assembly. Cut tape is also available for prototypes or low-volume builds.","metaTitle":"Microchip MCP4661T-103E/ML Digital Pot, 10k, 257-Tap, I²C","metaDescription":"MCP4661T-103E/ML dual 10k digital potentiometer, 257 taps, I²C, non-volatile, -40 to 125°C. Active production. Get current pricing and availability via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Taper":"Linear","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Mute, Selectable Address","Interface":"I²C","Tolerance":"±20%","Memory Type":"Non-Volatile","Configuration":"Potentiometer","Mounting Type":"Surface Mount","Number of Taps":"257","Package / Case":"16-VQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"1.8V ~ 5.5V","Resistance (Ohms)":"10k","Number of Circuits":"2","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-QFN (4x4)","Temperature Coefficient (Typ)":"150ppm/°C","Resistance - Wiper (Ohms) (Typ)":"75"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.67","priceTiers":[{"qty":1,"price":"$1.67000","currency":"USD"},{"qty":25,"price":"$1.39920","currency":"USD"},{"qty":100,"price":"$1.29000","currency":"USD"},{"qty":3300,"price":"$1.29000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/30a29ed11902df53e3585fafa111a1df.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MCP4661T-103E%2FML/alternatives.json"},"ai":{"faq":[{"question":"What is MCP4661T-103E/ML's listed taper?","answer":"The taper is linear, meaning the resistance between the wiper and either end changes linearly with the tap position. This is the standard for most analog trimming and gain-setting applications."},{"question":"Will MCP4661T-103E/ML drop into a board designed for MCP4014T-103E/OT?","answer":"No, the MCP4014T-103E/OT is a single-channel volatile rheostat in a SOT-23-5 package with an up/down interface, while the MCP4661T-103E/ML is a dual-channel non-volatile potentiometer in a 16-QFN with I²C. The pinouts, package, and interface are completely different — a board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP4661T-103E-ML","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP4661T-103E-ML when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}