{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1CAHM3_A/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC9.1CAHM3_A-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CAHM3_A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1CAHM3_A%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 1.5SMC TransZorb® series, unidirectional Zener TVS, 7.78V reverse standoff, 13.4V clamping, 1.5 kW peak pulse, 112A peak pulse, DO-214AB (SMC) surface mount, -65°C to 150°C junction.","salesMarkdown":"## What the protection window means The 1.5SMC9.1CAHM3_A/H: The 7.78 V reverse standoff is the working voltage of the rail this part is placed across — the TVS stays reverse-biased and invisible in normal operation. When a transient exceeds the standoff, it avalanches at the 8.65 V minimum breakdown and clamps the peak at 13.4 V, limiting what reaches the downstream load. The difference between the two — roughly 4.55 V at the clamping ceiling — is the protection margin the downstream circuitry must survive. The 1.5 kW rating is the peak-pulse power envelope at that waveform — the part is designed for infrequent, high-energy events rather than continuous dissipation, so repeated transients above the repetitive peak pulse rating will accumulate degradation. ## Automotive-qualified transient protection For a TVS protecting an ECU input or a telecom line card, that qualification is the gate: a commercial-grade Zener TVS in the same package may share the footprint but has not been screened to the same failure-mode profile under automotive thermal and humidity conditions. Junction temperature is what matters here: the thermal resistance from junction to ambient through the board footprint determines whether the clamping event keeps the TJ below 150°C at the operating ambient.","metaTitle":"1.5SMC9.1CAHM3_A/H TVS Diode, 7.78V Standoff, 1.5 kW","metaDescription":"Vishay 1.5SMC9.1CAHM3_A/H, unidirectional Zener TVS, 7.78V standoff, 13.4V clamping, 112A peak pulse, AEC-Q101 qualified, DO-214AB SMC. Available to order.","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","Series":"Automotive, AEC-Q101, 1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"Automotive, Telecom","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":"-65°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)":"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/1.5SMC9.1CAHM3_A%2FH/alternatives.json"},"ai":{"faq":[{"question":"Is there a pin-compatible alternative in the 1.5SMC family?","answer":"Confirm the standoff and clamping ratings match the protected rail before substituting — the unidirectional polarity is fixed, but voltage variants differ in both breakdown and clamping ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1CAHM3_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/1.5SMC9.1CAHM3_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}}