{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE56AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE56AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE56AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE56AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® series, Zener TVS diode, 1.5KE56AHE3/51, 1500W peak pulse, 47.8V reverse standoff, 77V clamp, DO-201AA axial, bulk.","salesMarkdown":"## 1.5kW peak pulse, AEC-Q101, axial DO-201AA It clamps transients at 77V maximum while standing off 47.8V continuously, making it a fit for 48V nominal rails in engine-control or body-electronics modules. The through-hole DO-201AA (DO-27) axial package suits legacy board layouts where a wave-solder or hand-solder step is already in the assembly flow. The 1.5KE56AHE3/51 is obsolete per the manufacturer; sourcing runs through independent distribution, confirmed per RFQ. ## Breakdown, clamp, and peak current Breakdown voltage starts at 53.2V minimum, ensuring the diode does not conduct during normal 48V bus operation. Power line protection is not supported — this is a unidirectional device for DC rail clamping, not AC mains. ## Sourcing an obsolete AEC-Q101 TVS Vishay lists the 1.5KE56AHE3/51 as obsolete. The AEC-Q101 qualification remains valid for existing designs, but new-program qualification should target an active Vishay or equivalent TVS in the same DO-201AA footprint. For BOM lines already locked to this part number, independent distribution holds inventory from surplus and overstock lots.","metaTitle":"1.5KE56AHE3/51 Vishay TVS, 1.5kW, 47.8V Standoff","metaDescription":"Obsolete Vishay 1.5KE56AHE3/51 TVS, AEC-Q101, 1500W peak pulse, 47.8V reverse standoff, 77V clamp. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"Automotive, AEC-Q101, TransZorb®","Package":"Bulk","Applications":"Automotive","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE56","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","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":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55e3e40e24fd2c3f96443c3e231bf459.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the 1.5KE56AHE3/51's reverse standoff and clamping voltage?","answer":"Breakdown voltage starts at 53.2V minimum."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE56AHE3-51","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/1.5KE56AHE3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}