{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA281B4IDBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA281B4IDBVR","canonicalUrl":"https://icboms.com/texas-instruments/INA281B4IDBVR","factsUrl":"https://icboms.com/api/mcp/products/INA281B4IDBVR","rawCanonicalId":null},"summary":{"shortDescription":"TI INA281B4IDBVR current sense amplifier, single circuit, SOT-23-5 package, 2.7 V to 20 V supply, 900 kHz gain bandwidth, 2.5 V/µs slew rate, -40°C to 125°C operating range.","salesMarkdown":"## Key ratings and what they mean for the BOM The 900 kHz gain-bandwidth product sets the usable bandwidth for closed-loop current sensing. For a typical motor phase current loop running at 20 kHz PWM, this amplifier has enough headroom to reproduce the waveform without significant phase lag. The 2.5 V/µs slew rate means the output can swing from near-zero to full-scale in a few microseconds, which matters when the downstream ADC or comparator expects a fast edge for overcurrent detection. The SOT-23-5 footprint is hand-solderable with a fine-tip iron, and there are breakout boards available if you want to prototype on a breadboard. No QFN reflow needed — this is a friendly package for a weekend build or a production run. ## Lifecycle and compliance The INA281B4IDBVR is listed as Active with ROHS3 compliance. No last-time-buy or end-of-life notice is on record, so it is safe to qualify into a new BOM without worrying about an imminent phase-out. The ROHS3 status covers the latest EU exemption updates, which simplifies compliance documentation for export builds.","metaTitle":"TI INA281B4IDBVR Current Sense Amplifier, SOT-23-5, Active","metaDescription":"TI INA281B4IDBVR is a current sense amplifier in SOT-23-5. 2.7V to 20V supply, 900 kHz GBW, 2.5V/µs slew rate, -40°C to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"2.5V/µs","Mounting Type":"Surface Mount","Amplifier Type":"Current Sense","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Current - Supply":"1.5mA","Number of Circuits":"1","Current - Input Bias":"20 µA","Operating Temperature":"-40°C ~ 125°C (TA)","Gain Bandwidth Product":"900 kHz","Voltage - Input Offset":"30 µV","Supplier Device Package":"SOT-23-5","Voltage - Supply Span (Max)":"20 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.63","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.63000","currency":"USD"},{"qty":10,"price":"$2.36000","currency":"USD"},{"qty":25,"price":"$2.22600","currency":"USD"},{"qty":100,"price":"$1.89660","currency":"USD"},{"qty":250,"price":"$1.78080","currency":"USD"},{"qty":500,"price":"$1.55820","currency":"USD"},{"qty":1000,"price":"$1.29108","currency":"USD"},{"qty":3000,"price":"$1.26000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/646ef6de80941b974598231cd90bb517.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the amplifier type of INA281B4IDBVR?","answer":"It is a current sense amplifier — designed to measure current by amplifying the voltage across a shunt resistor."},{"question":"What are the alternatives to INA281B4IDBVR?","answer":"The INA254A1IPWAR is a zero-drift current sense amplifier with a 350 kHz bandwidth and 2.4 V/µs slew rate, also in a surface-mount package. It trades bandwidth for lower offset drift, which may suit precision DC current measurement over the INA281's wider AC bandwidth."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA281B4IDBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA281B4IDBVR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}