{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27HE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE27HE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE27HE3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27HE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb®, TVS Zener, 1.5KE27HE3/54, 1500W peak pulse, 21.8V standoff, DO-201AA axial through-hole.","salesMarkdown":"The 1.5KE27HE3/54: The 21.8 V standoff voltage means the diode draws negligible leakage below that rail — it sits across a 24 V nominal bus without loading it. When a transient exceeds the 24.3 V minimum breakdown voltage, the device clamps at 39.1 V maximum, shunting up to 38.4 A of surge current (10/1000 µs) to ground. The 1500 W peak pulse rating is the product of clamp voltage and peak current — it defines the energy the diode can absorb in a single surge event without failing. For repetitive transients, derate per the pulse derating curve in the full datasheet. ## Lifecycle status and sourcing for the 1.5KE27HE3/54 Vishay lists the 1.5KE27HE3/54 as obsolete. For a BOM line that requires this exact AEC-Q101 qualification and 1500 W rating in a DO-201AA package, the 1.5KE27HE3/54 remains the specified fit.","metaTitle":"1.5KE27HE3/54 Vishay TVS, 1500W, 21.8V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE27HE3/54 automotive TVS diode, 1500W peak pulse, 21.8V standoff, AEC-Q101. Obsolete — sourced to order against RFQ through independent distribution.","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":"1.5KE27","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"24.3V","Voltage - Clamping (Max) @ Ipp":"39.1V","Voltage - Reverse Standoff (Typ)":"21.8V","Current - Peak Pulse (10/1000µs)":"38.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE27HE3/54?","answer":"The 1.5KE27HE3/54 is obsolete from Vishay. We source it through independent distribution channels — submit an RFQ for current availability and pricing."},{"question":"What is the 1.5KE27HE3/54 used for?","answer":"This TVS diode protects 24 V automotive power buses from transient overvoltage events such as load dump and inductive kickback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE27HE3-54","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/1.5KE27HE3-54 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}}