{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC56CA-M3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC56CA-M3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC56CA-M3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC56CA-M3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor Zener bidirectional TVS diode, 1.5SMC/TransZorb series, 1500W peak pulse, 47.8V reverse standoff, 77V clamping max @ 19.5A, DO-214AB SMC surface-mount package, -65 to 150°C junction operating temperature.","salesMarkdown":"## 1500W peak pulse — what the rating means on the bench The 1.5SMC56CA-M3/9AT: That waveform defines the energy the device must absorb without failing. When a transient fires, the clamping stage — rated 77V maximum at 19.5A peak pulse current — pins the voltage at the downstream circuit's input. The 19.5A figure tells you the current the clamping element must survive at the standard waveform; exceeding it risks the device entering secondary breakdown. ## Three-voltage selection logic for the protected rail The reverse standoff voltage of 47.8V is the DC working voltage the TVS sees when the circuit is quiescent — biased in reverse, drawing only leakage current, doing nothing. The 53.2V minimum breakdown is the threshold above which the Zener action begins; the CA bidirectional variant clamps on both polarities around that breakdown point. For a 48V nominal rail, the standoff-to-breakdown margin is tight enough that you size the TVS with headroom above the worst-case DC working voltage — a 52V rail dipping below 47.8V risks unwanted early conduction on a cold start or during brownout. ## TransZorb heritage and the DO-214AB package Operating junction temperature runs to 150°C — the upper end of the -65 to 150°C rating gives you a wide thermal ceiling for automotive and industrial environments where the board ambient can climb. The DO-214AB leads and pad layout must follow the land pattern in the Vishay datasheet; the package sits flat against the PCB plane for thermal transfer. ## Active lifecycle — what this means for your BOM schedule No official second source or cross-reference is listed for this order code — a single-supplier BOM position until an alternate is qualified.","metaTitle":"Vishay 1.5SMC56CA-M3/9AT TVS Diode, 1500W Peak, 77V Clamp","metaDescription":"Vishay 1.5SMC56CA-M3/9AT bidirectional Zener TVS diode, 1500W peak pulse at 10/1000us, 47.8V standoff / 77V clamping.","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":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC56","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)":"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":"$0.4447","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC56CA-M3%2F9AT/alternatives.json"},"ai":{"faq":[{"question":"What standoff voltage does the 1.5SMC56CA handle during normal operation?","answer":"The reverse standoff (working) voltage is 47.8V typical. The device stays reverse-biased at up to this level without conducting; once a transient exceeds the 53.2V minimum breakdown, the clamping action engages and holds the voltage to a maximum of 77V across the 19.5A peak pulse event."},{"question":"Is there a pin-compatible alternative in the 1.5SMC series?","answer":"The 1.5SMC series spans multiple standoff and clamping voltage combinations; the CA suffix designates the bidirectional polarity and 53.2V minimum breakdown. Any CA-bidirectional DO-214AB part in the family with matching standoff, breakdown, and clamping ratings is the candidate — no formal cross-reference order code is listed for this specific part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC56CA-M3-9AT","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/1.5SMC56CA-M3-9AT 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}}