{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20HE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE20HE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20HE3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20HE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® series, Zener TVS diode, 1.5KE20HE3/54, 1500W peak pulse, 16.2V reverse standoff, DO-201AA axial through-hole.","salesMarkdown":"## 1500W peak pulse in an axial DO-201AA body The 1.5KE20HE3/54: The 18 V minimum breakdown voltage means it starts conducting just above the 16.2 V standoff, clamping transients before they reach downstream circuitry — a common choice for 12 V and 15 V automotive rails where load-dump and inductive spikes need a hard limit. ## AEC-Q101 qualification and the TransZorb® family This part carries AEC-Q101 automotive qualification and the TransZorb® designation, which indicates a glass-passivated junction rated for repetitive surge duty — not just a one-shot clamp. The DO-201AA (DO-27) axial package is a through-hole form factor — it hand-solders easily and the lead bend absorbs board flex, but the tape-and-reel packaging (: Tape & Reel (TR)) means it ships on a reel for automated insertion, not loose in a bag. ## Obsolete — sourcing through independent channels Vishay lists the 1.5KE20HE3/54 as Obsolete. For a BOM that already passed qualification with this exact Vishay part number, the alternative is to source remaining inventory or requalify a functionally equivalent TVS from the same 1.5KE family — the 1.5KE20A (unidirectional) or 1.5KE20CA (bidirectional) share the same DO-201AA package and similar clamping specs, but lack the AEC-Q101 automotive grade. A board spin is not required for the package swap.","metaTitle":"1.5KE20HE3/54 Vishay TVS, 1500W, 16.2V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE20HE3/54 Zener TVS diode, 1500W peak pulse, 16.2V reverse standoff, AEC-Q101 automotive grade. Obsolete — 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 & Reel (TR)","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":"1.5KE20","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"18V","Voltage - Clamping (Max) @ Ipp":"29.1V","Voltage - Reverse Standoff (Typ)":"16.2V","Current - Peak Pulse (10/1000µs)":"51.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE20HE3/54?","answer":"The 1.5KE20A (unidirectional) or 1.5KE20CA (bidirectional) from the same Vishay 1.5KE family share the DO-201AA axial package and similar 16.2 V standoff / 29.1 V clamping specs. The key difference: the HE3 suffix denotes AEC-Q101 automotive qualification, which the standard 1.5KE20A/CA do not carry. If automotive-grade is not required, either is a drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20HE3-54","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/1.5KE20HE3-54 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}}