{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TC670ECHTR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"TC670ECHTR","canonicalUrl":"https://icboms.com/microchip/TC670ECHTR","factsUrl":"https://icboms.com/api/mcp/products/TC670ECHTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology TC670ECHTR fan failure detector IC, internal sensor, open-drain output, 3V to 5.5V supply, -40°C to +85°C range, SOT-23-6 package, Tape & Reel.","salesMarkdown":"## What the TC670ECHTR actually does The Microchip TC670ECHTR is a dedicated fan failure detector — it monitors a fan's tachometer output and pulls its open-drain alarm pin low when the fan stalls or slows below a programmed threshold. The internal temperature sensor lets it track its own ambient, but the primary job is fan supervision, not general-purpose temperature logging. Housed in a 6-pin SOT-23 package (SOT-23-6, supplier device package SOT-23-6), the TC670ECHTR occupies minimal board area — about 3×3 mm footprint. The open-drain output means the alarm pin needs a pull-up resistor to the logic supply; the pin itself sinks current when active.","metaTitle":"Microchip TC670ECHTR Fan Failure Detector, SOT-23-6, Active","metaDescription":"Microchip TC670ECHTR fan failure detector IC. Internal sensor, open-drain output, 3V to 5.5V supply, -40°C to +85°C range. SOT-23-6 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Fan Control, Temp Monitor","Topology":"Oscillator","Output Fan":"Yes","Output Type":"Open Drain","Sensor Type":"Internal","Output Alarm":"Yes","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Sensing Temperature":"-40°C ~ 85°C","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"SOT-23-6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.77","priceTiers":[{"qty":1,"price":"$1.77000","currency":"USD"},{"qty":25,"price":"$1.47360","currency":"USD"},{"qty":100,"price":"$1.33500","currency":"USD"},{"qty":3000,"price":"$1.33500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/25e8ae592d26d8e690368503ed136519.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TC670ECHTR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the TC670ECHTR?","answer":"The EMC2101-R-ACZL-TR is a functional peer — it also provides fan control and temperature monitoring, but adds an external sensor input (Internal and External) and communicates via 2-Wire SMBus, whereas the TC670ECHTR uses a simpler oscillator-based topology with an open-drain alarm output. The EMC2101-R-ACZL-TR has a wider sensing range (-64°C to +127°C) and higher operating temperature (125°C). They are not pin-compatible — the TC670ECHTR is a dedicated detector, the EMC2101 is a more feature-rich fan controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/TC670ECHTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/TC670ECHTR 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}}