{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CAHM6G","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC9.1CAHM6G","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC9.1CAHM6G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CAHM6G","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation Automotive AEC-Q101 1.5SMC Zener TVS diode, 1.5 kW peak pulse, 7.78 V standoff / 13.4 V clamping, 117 A peak pulse, 1 bidirectional channel, -55 to 150 deg C TJ, DO-214AB SMC surface mount, Tape & Reel.","salesMarkdown":"## Clamping performance on a 12 V automotive rail The 1.5SMC9.1CAHM6G: At 7.78 V typical reverse standoff, the device sits off-state on a 12 V rail with margin — it does not conduct under normal operation. The 1.5 kW peak pulse rating sets the energy absorption ceiling for the surge event — a higher peak power rating means the clamping voltage stays lower under surge stress, reducing let-through voltage on the protected node. ## What the temperature and qualification ratings mean Junction temperature range is -55 to 150 deg C — the upper bound is the automotive under-hood band, not the cabin. A 105 deg C ambient still leaves 45 deg C of junction-rise margin at typical board thermal conditions, which is why this series is qualified for engine-compartment modules without derating gymnastics. It is not a commercial-grade part with a marketing label. Tape & Reel packaging on a surface-mount SMC body suits high-volume pick-and-place assembly — the DO-214AB foot print is the industry standard for TVS diodes on automotive control modules, which means the land pattern is solved before the schematic is closed. ## Where the 1.5SMC series fits in automotive protection Zener TVS diodes in this series protect sensitive electronics from transient overvoltage on power rails — automotive systems from ECU inputs to sensor supply rails commonly use this clamping architecture for load-dump and inductive spike immunity per ISO 7637-2. The 9.1 V nominal (from the base product number) puts the standoff below the 12 V nominal rail, leaving enough headroom for normal operation and enough clamping margin to absorb a defined surge class. Power Line Protection is listed as No — this device is not designed for direct line-to-line protection but for node-level clamping on individual rails, which is the typical deployment for a unidirectional TVS on a positive supply rail.","metaTitle":"1.5SMC9.1CAHM6G TVS Diode, 1.5 kW, 13.4 V Clamping","metaDescription":"Taiwan Semiconductor 1.5SMC9.1CAHM6G unidirectional Zener TVS, 7.78 V standoff, 13.4 V clamping @ 117 A peak pulse, AEC-Q101, DO-214AB SMC. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5SMC","Package":"Tape & Reel (TR)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC9.1","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"117A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CAHM6G/alternatives.json"},"ai":{"faq":[{"question":"What is 1.5SMC9.1CAHM6G used for?","answer":"The 7.78 V standoff sits off-state on a 12 V automotive rail until a surge triggers the 8.65 V minimum breakdown, clamping the spike to 13.4 V maximum at 117 A peak pulse."},{"question":"What does the Automotive AEC-Q101 qualification mean for this part?","answer":"AEC-Q101 is the automotive stress qualification for discrete semiconductors — it means the device has passed temperature cycling, humidity, mechanical shock, and surge tests to the automotive standard. It is not a commercial-grade label but a qualification that clears the part for automotive ECU and module BOMs."},{"question":"What is the closest pin-compatible alternative to 1.5SMC9.1CAHM6G?","answer":"The 1.5SMC series is a defined family — sourcing an alternative within the same series footprint and standoff band would require confirming the breakdown and clamping ratings against the target application's surge class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC9.1CAHM6G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5SMC9.1CAHM6G 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}}