{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TCTH021BE,LF(CT","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TCTH021BELFCT","canonicalUrl":"https://icboms.com/toshiba/TCTH021BELFCT","factsUrl":"https://icboms.com/api/mcp/products/TCTH021BE%2CLF(CT","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba Semiconductor TCTH0xxxE series thermal detection IC, TCTH021BE,LF(CT, open-drain output, 0.5V threshold, SOT-553 package, surface mount, -40°C to 125°C.","salesMarkdown":"## What the thermal detection IC does on the board The TCTH021BE,LF(CT is a thermal detection IC from Toshiba's TCTH0xxxE series — it monitors a single voltage threshold at 0.5V and asserts an open-drain or open-collector output when the temperature at the die exceeds the internal trip point. The 214µs typical reset timeout means the output automatically recovers after the over-temperature condition clears, without requiring an external reset pin or supervisor. ## Package and footprint for layout Housed in a 5-pin SOT-553 package (supplier device package ESV), the TCTH021BE,LF(CT occupies roughly 1.6 mm × 1.6 mm of board area — small enough to place near the hot component it monitors. Surface-mount mounting with tape-and-reel or cut-tape packaging; the 0.5V threshold is internally fixed, so no external resistor divider is needed for the sense input.","metaTitle":"Toshiba TCTH021BE,LF(CT Thermal Detection IC, 0.5V Threshold","metaDescription":"Active-production Toshiba TCTH021BE,LF(CT thermal detection IC with open-drain output, 0.5V threshold, 214µs reset timeout, -40°C to 125°C range.","metaKeywords":null},"attributes":{"series":"TCTH0xxxE","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Thermal","Output":"Open Drain or Open Collector","Series":"TCTH0xxxE","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"214µs Typical","Package / Case":"SOT-553","lifecycle_stage":"eol_hot","Voltage - Threshold":"0.5V","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"ESV","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","stockQuantity":15,"priceTiers":[{"qty":1,"price":"$0.47000","currency":"USD"},{"qty":10,"price":"$0.36100","currency":"USD"},{"qty":25,"price":"$0.31120","currency":"USD"},{"qty":50,"price":"$0.30000","currency":"USD"},{"qty":100,"price":"$0.25550","currency":"USD"},{"qty":500,"price":"$0.22220","currency":"USD"},{"qty":1000,"price":"$0.19442","currency":"USD"},{"qty":4000,"price":"$0.18609","currency":"USD"},{"qty":8000,"price":"$0.16110","currency":"USD"},{"qty":12000,"price":"$0.15943","currency":"USD"},{"qty":20000,"price":"$0.15721","currency":"USD"},{"qty":28000,"price":"$0.15276","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/30980126ef008783f905b3854d2f102f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output type of TCTH021BE,LF(CT?","answer":"The output is open drain or open collector — it pulls low when the overtemperature condition is detected, and the 214µs reset timeout lets it self-recover once the die cools below the threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TCTH021BELFCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TCTH021BELFCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}