{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC56CAHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC56CAHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC56CAHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC56CAHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 1.5SMC TransZorb® series, bidirectional Zener TVS diode, 1500W peak pulse power, 77V clamping, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## AEC-Q101 TVS for 48V rail clamping The 1.5SMC56CAHM3/I: It clamps at 77V maximum with a 19.5A peak pulse current, protecting a 47.8V reverse standoff rail — the typical operating voltage for automotive 48V mild-hybrid buses and telecom -48V supplies. AEC-Q101 qualification means this part passed the automotive-grade stress tests: high-temperature reverse bias, temperature cycling, and ESD robustness per the AEC-Q101 rev E standard. ## Clamping voltage and breakdown margin Minimum breakdown voltage is 53.2V, giving a 5.4V guard band above the 47.8V reverse standoff. This margin ensures the TVS does not conduct at nominal rail voltage, yet triggers before the downstream IC's absolute maximum rating — typically 60V for 48V-class transceivers and sensors. For a 48V nominal bus with 60V abs-max downstream devices, the 77V clamp means the TVS absorbs the surge energy while the clamp stays below the device's destructive threshold only if the surge impedance limits the current to 19.5A or less. The SMC body handles the 1500W pulse without package cracking — the copper leadframe and molded epoxy are rated for the peak junction temperature rise during the 10/1000µs event. Supplied on Tape & Reel for automated pick-and-place. The bidirectional channel means a single device clamps both positive and negative transients — no polarity orientation needed on the PCB, which simplifies assembly and reduces placement errors. Listed as Active — Vishay continues to manufacture this AEC-Q101 TVS. The base product number 1.5SMC56 covers the unqualified variant; the HM3/I suffix denotes the AEC-Q101 automotive grade and the I for the bidirectional configuration. When specifying for a production BOM, confirm the full suffix matches the procurement line item.","metaTitle":"Vishay 1.5SMC56CAHM3/I TVS, 1500W, 77V Clamp, AEC-Q101","metaDescription":"Vishay 1.5SMC56CAHM3/I bidirectional Zener TVS, 1500W peak pulse, 77V clamping, AEC-Q101 qualified. Active production, sourced to order. DO-214AB SMC package.","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","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC56","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)":"53.2V","Voltage - Clamping (Max) @ Ipp":"77V","Voltage - Reverse Standoff (Typ)":"47.8V","Current - Peak Pulse (10/1000µs)":"19.5A"}},"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/1.5SMC56CAHM3%2FI/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC56CAHM3-I","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/1.5SMC56CAHM3-I 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}}