{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE56HE3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE56HE3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE56HE3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE56HE3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® TVS, 1.5KE56HE3/73, Zener type, 1500W peak pulse, 45.4V reverse standoff, DO-201AA axial, through hole.","salesMarkdown":"## Obsolete automotive TVS — what the ratings mean for fit The 1.5KE56HE3/73: The 45.4 V reverse standoff voltage means it clamps transients on a nominal 36 V or 42 V automotive bus — the 50.4 V minimum breakdown ensures the diode stays off during normal battery ripple, while the 80.5 V clamping at 18.6 A peak pulse current limits the spike seen by downstream electronics. The single unidirectional channel protects one signal or power rail per device. ## Sourcing an obsolete part Because the 1.5KE56HE3/73 is a standard DO-201AA axial package, a functionally equivalent TVS with the same standoff voltage and peak pulse rating can be cross-referenced if the exact Vishay code is dry. Confirm the breakdown and clamping thresholds against the BOM before substituting.","metaTitle":"Vishay 1.5KE56HE3/73 TVS, 1500W, 45.4V Standoff, AEC-Q101","metaDescription":"Obsolete Vishay 1.5KE56HE3/73 automotive TVS, 1500W peak pulse, 45.4V reverse standoff, AEC-Q101. 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":"Tape & Box (TB)","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)":"50.4V","Voltage - Clamping (Max) @ Ipp":"80.5V","Voltage - Reverse Standoff (Typ)":"45.4V","Current - Peak Pulse (10/1000µs)":"18.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE56HE3%2F73/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Vishay provide for 1.5KE56HE3/73?","answer":"The part is AEC-Q101 qualified, which includes automotive-grade reliability testing and PPAP documentation. RoHS and REACH compliance data is available from Vishay for the TransZorb series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE56HE3-73","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/1.5KE56HE3-73 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}}