{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STC3115IQT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STC3115IQT","canonicalUrl":"https://icboms.com/stmicroelectronics/STC3115IQT","factsUrl":"https://icboms.com/api/mcp/products/STC3115IQT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics OptimGauge™ series, STC3115IQT Battery Monitor, I²C interface, Surface Mount, 10-UFDFN package, -40°C ~ 85°C operating temperature.","salesMarkdown":"## What the STC3115IQT is and where it fits The STMicroelectronics STC3115IQT is a dedicated battery monitor IC from the OptimGauge™ series, designed to track charge state and voltage in single-cell Li-ion or Li-Polymer packs. It communicates over an I²C bus, making it a natural fit for portable medical devices, handheld instruments, IoT endpoints, and battery-backed industrial sensors where the host MCU already has a spare I²C port. The part is housed in a 10-DFN (3x2 mm) package — small enough to sit directly on the battery-side flex or mainboard without consuming much real estate. Operating temperature spans -40°C to 85°C, which covers the industrial range but stops short of automotive under-hood requirements. That means it is suited for outdoor telecom enclosures, warehouse scanners, and cold-chain data loggers — not for engine-bay or cabin-ambient automotive modules unless the ambient stays below 85°C. ## Lifecycle and sourcing reality The STC3115IQT carries an Active product status. ROHS3 compliance is confirmed, so no exemption expiration concerns for EU or similar markets. The part ships in Tape & Reel or Cut Tape options, which is the standard for this package size and suits both prototype pick-and-place and volume reels. ## Package and mounting — what to expect on the board The 10-UFDFN package with supplier device package 10-DFN (3x2) is a small, leadless DFN. Surface-mount only; no through-hole variant exists.","metaTitle":"STMicroelectronics STC3115IQT Battery Monitor, I²C, 10-DFN","metaDescription":"STMicroelectronics STC3115IQT OptimGauge™ battery monitor IC. I²C interface, 10-UFDFN package, -40°C to 85°C. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":"OptimGauge™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"OptimGauge™","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Battery Monitor","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"10-UFDFN","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"10-DFN (3x2)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7","priceTiers":[{"qty":1,"price":"$3.70000","currency":"USD"},{"qty":10,"price":"$3.32500","currency":"USD"},{"qty":25,"price":"$3.14360","currency":"USD"},{"qty":100,"price":"$2.72430","currency":"USD"},{"qty":250,"price":"$2.58460","currency":"USD"},{"qty":500,"price":"$2.31916","currency":"USD"},{"qty":1000,"price":"$2.30650","currency":"USD"},{"qty":3000,"price":"$2.30650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8d2302436c62c36c2f3c9e2834eb89f1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STC3115IQT/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STC3115IQT?","answer":"The STC3115IQT is a member of the OptimGauge™ family. Within this series, pin-compatible variants exist with different feature sets (e.g., the STC3117 adds a coulomb counter). For a direct drop-in replacement, verify the pinout and register map against the specific alternative — the I²C address and alert pin assignments may differ between family members. No single universal second source is listed; cross-reference against the manufacturer's product selector guide."},{"question":"Does STC3115IQT have a pinout compatible with other gas gauge ICs?","answer":"The STC3115IQT follows the 10-DFN pinout typical of ST's OptimGauge™ series, but it is not universally pin-compatible with gas gauges from other manufacturers (e.g., Texas Instruments, Maxim). The I²C address, alert output polarity, and power-supply sequencing differ. Always compare the datasheet pin assignments before substituting across brands."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STC3115IQT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STC3115IQT 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}}