{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE27-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE27-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Zener type, 1.5KE27-/54, 1500W peak pulse, 21.8V standoff, 39.1V clamp, DO-201AA axial, through hole.","salesMarkdown":"## 1500 W peak pulse in a DO-201AA axial package The 1.5KE27-E3/54: The Vishay 1.5KE27-/54 is a 1500 W TransZorb® TVS diode, Zener type, designed to clamp transients on general-purpose DC rails. Its 21.8 V reverse standoff voltage means it sits across a 24 V nominal bus without conducting; when a surge hits, the breakdown triggers at 24.3 V minimum and the diode clamps the voltage to 39.1 V maximum while shunting 38.4 A of peak pulse current (10/1000 µs waveform). The DO-201AA axial package (also known as DO-27) is a through-hole form factor — it inserts into a PCB hole and is wave-soldered, making it a common choice for bulkier transient protection on power entry boards, industrial control inputs, and telecom line cards where surface-mount TVS devices might lack the surge capacity. ## Clamping parametrics and temperature envelope The junction temperature range spans -55°C to +175°C, which covers both cold-start conditions and the self-heating from repetitive surges — the 1500 W rating is derated above 25°C, so a board in a 85°C ambient sees roughly half the peak pulse capability. With a single unidirectional channel, this part protects one rail; for bidirectional or AC-line clamping, two devices are wired back-to-back or a dedicated bidirectional TransZorb is selected. ## Obsolete — sourcing through independent channels Vishay has marked the 1.5KE27-/54 as obsolete. Buyers should verify date code and lot traceability at time of order.","metaTitle":"1.5KE27-E3/54 Vishay TVS, 1500W, 21.8V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE27-E3/54 TransZorb® TVS, 1500W peak pulse, 21.8V reverse standoff, 39.1V clamp. 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":"TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","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":"What package does the 1.5KE27-/54 come in?","answer":"It is supplied in a DO-201AA (DO-27) axial-lead through-hole package, shipped in Tape & Reel (TR) format."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE27-E3-54","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/1.5KE27-E3-54 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}}