{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CAHE3_A/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC9.1CAHE3_A-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CAHE3_A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CAHE3_A%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division 1.5SMC, TransZorb® Zener TVS diode, automotive grade, AEC-Q101, 1500W peak pulse, 112A at 10/1000µs, 7.78V standoff / 13.4V clamp, DO-214AB surface mount, tape & reel.","salesMarkdown":"## Clamping window — what the standoff and breakdown voltages mean for the protected rail The 1.5SMC9.1CAHE3_A/H: The reverse standoff of 7.78 V typ sets the maximum working voltage the protected rail sees during normal operation — the TVS stays reverse-biased and off until a surge arrives. ## Automotive qualification — AEC-Q101 and the under-hood thermal envelope AEC-Q101 is the automotive discrete semiconductor stress qualification — it certifies the part has passed temperature cycling, humidity bias, power cycling, and surge-life testing at the grade 1 temperature band (-40 to +125 °C ambient). For a TVS protecting an ECU input or a sensor rail, this means the clamping path itself is rated for the thermal profile of a sealed engine-compartment module without derating to a lower current grade. Junction temperature range is -65 to +150 °C — the upper limit gives headroom above the 125 °C grade 1 ceiling, so a 105 °C under-hood ambient still leaves 45 °C of junction rise margin at typical surge duty. ## Sourcing posture — active, no successor on record Available through independent distribution and quoted to order against BOM quantity with full lot traceability and manufacturer warranty from an authorized source.","metaTitle":"Vishay 1.5SMC9.1CAHE3_A/H TVS Diode, 7.78V Standoff","metaDescription":"Vishay 1.5SMC9.1CAHE3_A/H Zener TVS, AEC-Q101 automotive, 1500W peak pulse, 112A. Active — quoted to order on RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Grade":"Automotive","Series":"1.5SMC, TransZorb®","Packaging":"Tape & Reel (TR)","Part Status":"Active","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC9.1","Operating Temperature":"-65°C ~ 150°C (TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CAHE3_A%2FH/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between the standoff voltage and the clamping voltage on a TVS diode like 1.5SMC9.1CAHE3_A/H?","answer":"The standoff voltage (7.78 V typ) is the maximum normal working voltage the protected rail runs at — the TVS sits reverse-biased and idle in normal operation. The clamping voltage (13.4 V max) is what the line is clamped to when a transient exceeds the breakdown threshold (8.65 V min), carrying up to 112 A peak pulse. The protection window between standoff and clamping is therefore roughly 5.6 V of headroom before the TVS activates."},{"question":"What does AEC-Q101 mean for selecting 1.5SMC9.1CAHE3_A/H in an automotive design?","answer":"AEC-Q101 qualification means the device has passed the automotive discrete semiconductor stress matrix — it is approved for automotive electronics under the hood, in the cabin, or in chassis domains, as opposed to a commercial-grade TVS which is only rated for benign environments. This qualification is a prerequisite for safety-critical or reliability-class automotive ECUs, and many tier-1 automotive customers will not accept a part without it on the BOM line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CAHE3_A-H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CAHE3_A-H 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}}