{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TMP451HQDQWTQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TMP451HQDQWTQ1","canonicalUrl":"https://icboms.com/texas-instruments/TMP451HQDQWTQ1","factsUrl":"https://icboms.com/api/mcp/products/TMP451HQDQWTQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TMP451HQDQWTQ1, Automotive AEC-Q100, Digital Local/Remote Temperature Sensor, 12-bit Resolution, I²C/SMBus, ±1°C Accuracy, 1.7V-3.6V Supply, -40°C to 125°C, 8-WSON (2x2.5mm) Package.","salesMarkdown":"## Accuracy — the number that decides fit The TMP451HQDQWTQ1 is specified at ±1°C typical, ±2°C maximum over the full -40°C to 125°C range. For a production line monitoring battery temperature or motor winding heat, that ±1°C typical is tight enough to catch a drifting thermal profile before it becomes a fault. The ±2°C worst-case matters if you are setting a hard thermal shutdown threshold — leave at least 2°C of guard band below the trip point to avoid nuisance trips at temperature extremes. ## Package and mounting for automotive boards Housed in an 8-WFDFN package with wettable flanks (2x2.5mm body), this sensor is sized for automated optical inspection (AOI) on high-volume SMT lines. The wettable flank helps solder-joint inspection on bottom-terminated packages — a requirement for many automotive Tier-1s. Mount it close to the remote sensing target; long traces pick up noise that degrades the remote-channel accuracy. ## Built-in features for system-level control The part includes a one-shot conversion mode for low-power polling, a programmable limit register that can assert an output switch (ALERT/THERM) without polling the bus, and a shutdown mode that drops quiescent current. These are useful in battery-powered or intermittently-sensed automotive modules — the controller can wake the sensor, take a reading, and put it back to sleep.","metaTitle":"TMP451HQDQWTQ1 Temperature Sensor, AEC-Q100, ±1°C Accuracy","metaDescription":"TI TMP451HQDQWTQ1 digital local/remote temp sensor, 12-bit I²C/SMBus, ±1°C accuracy, -40°C to 125°C, 8-WSON. Active, AEC-Q100.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"One-Shot, Output Switch, Programmable Limit, Shutdown Mode","Resolution":"12 b","Output Type":"I²C/SMBus","Sensor Type":"Digital, Local/Remote","Mounting Type":"Surface Mount, Wettable Flank","Package / Case":"8-WFDFN","Test Condition":"0°C ~ 70°C (-40°C ~ 125°C)","lifecycle_stage":"eol_hot","Voltage - Supply":"1.7V ~ 3.6V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"8-WSON (2x2.5)","Accuracy - Highest (Lowest)":"±1°C (±2°C)","Sensing Temperature - Local":"-40°C ~ 125°C","Sensing Temperature - Remote":"-64°C ~ 191°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.09","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.09000","currency":"USD"},{"qty":5,"price":"$1.97400","currency":"USD"},{"qty":10,"price":"$1.69200","currency":"USD"},{"qty":25,"price":"$1.35360","currency":"USD"},{"qty":50,"price":"$1.24080","currency":"USD"},{"qty":100,"price":"$1.12800","currency":"USD"},{"qty":250,"price":"$1.04340","currency":"USD"},{"qty":500,"price":"$0.98700","currency":"USD"},{"qty":750,"price":"$0.90240","currency":"USD"},{"qty":1250,"price":"$0.87420","currency":"USD"},{"qty":2500,"price":"$0.84600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c340e60cf6581790b7dc4de543b5f821.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can TMP451HQDQWTQ1 measure remote temperature?","answer":"Yes, it has a remote sensing channel that measures from -64°C to 191°C using an external diode-connected transistor."},{"question":"What is the difference between TMP451HQDQWTQ1 and TMP451AQDQWTQ1?","answer":"Both are functionally identical digital temperature sensors with the same local/remote channels, I²C interface, and package. The difference is in the accuracy grade and temperature range qualification — the 'HQ' variant is specified for the full -40°C to 125°C automotive range with ±1°C typical accuracy, while the 'AQ' variant may have a different accuracy bin or temperature range. Check the specific datasheet for the 'AQ' variant's ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TMP451HQDQWTQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TMP451HQDQWTQ1 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}}