{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STC3115IJT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STC3115IJT","canonicalUrl":"https://icboms.com/stmicroelectronics/STC3115IJT","factsUrl":"https://icboms.com/api/mcp/products/STC3115IJT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STC3115IJT OptimGauge™ Battery Monitor, I²C interface, 10-WFBGA CSPBGA package, Surface Mount, -40°C to 85°C operating range.","salesMarkdown":"## Package and board-fit for the STC3115IJT The STC3115IJT ships in a 10-WFBGA, CSPBGA package with a supplier device package of 10-CSP measuring 1.4x2.04 mm. This 10-ball wafer-level chip-scale package demands a fine-pitch PCB layout with controlled solder-paste stencil aperture for reliable BGA attachment. ## What the I²C battery monitor does on the BOM This is a battery gas gauge — the STC3115IJT tracks charge and discharge in Li-ion cells, reporting capacity data over an I²C interface to a host microcontroller. The OptimGauge™ series is STMicroelectronics' family for coulomb-counting and voltage-based fuel gauging in portable designs. Because the fuel gauge communicates over I²C, the host reads remaining capacity and voltage without dedicated ADC channels — the bus shares the same two wires as other I²C peripherals on the board. No official successor or second-source cross-reference is listed. The closest peer within the OptimGauge family is the STC3115IQT, which shares the same function and I²C interface but uses a different package variant — the IQT is a TSSOP-14, not a CSP, so the PCB footprint and reflow profile differ.","metaTitle":"STC3115IJT Battery Monitor, OptimGauge, I²C, 10-CSP","metaDescription":"STC3115IJT battery gas gauge from STMicroelectronics OptimGauge series. I²C interface, 10-CSP package, -40°C to 85°C range. Active, ROHS3 compliant.","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-WFBGA, CSPBGA","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"10-CSP (1.4x2.04)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.16","priceTiers":[{"qty":1,"price":"$2.16000","currency":"USD"},{"qty":10,"price":"$1.94400","currency":"USD"},{"qty":25,"price":"$1.83360","currency":"USD"},{"qty":100,"price":"$1.56230","currency":"USD"},{"qty":250,"price":"$1.46692","currency":"USD"},{"qty":500,"price":"$1.28356","currency":"USD"},{"qty":1000,"price":"$1.06352","currency":"USD"},{"qty":2500,"price":"$0.99017","currency":"USD"},{"qty":5000,"price":"$0.95350","currency":"USD"},{"qty":10000,"price":"$0.91683","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8d2302436c62c36c2f3c9e2834eb89f1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STC3115IJT/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the STC3115IJT?","answer":"The STC3115IQT is the closest peer — same OptimGauge series, same battery-monitor function and I²C interface. The difference is the package: the IQT comes in a TSSOP-14, not the 10-CSP of the IJT, so the PCB land pattern and assembly process are not drop-in compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STC3115IJT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STC3115IJT 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}}