{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE400-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® Zener TVS, 1.5KE400-/73, 1500W (1.5kW) peak pulse, 324V standoff, 574V clamp, 2.6A, DO-201AA Axial, Through Hole, Tape & Box.","salesMarkdown":"## What the 1.5kW rating means for your rail The 1.5KE400-E3/73: That 574V clamping voltage at 2.6A peak pulse current tells you the rail it protects must tolerate that transient ceiling without secondary breakdown. With a 324V reverse standoff voltage and a minimum breakdown of 360V, this part sits on a nominal 300V DC bus or a 240V AC rectified line — the standoff is the continuous DC bias the diode ignores, and the breakdown is where it starts conducting. The 175°C max junction temperature gives headroom in a sealed enclosure. ## Obsolete — what that means for procurement Vishay lists the 1.5KE400-/73 as obsolete. The DO-201AA axial-lead package is a standard footprint; a functional replacement would need the same 324V standoff and 1.5kW pulse rating, but the pinout is two-lead axial so any through-hole TVS in the same voltage class fits the board holes. No pin-compatible cross-reference from Vishay is published. Through-hole mounting in a DO-201AA (DO-27) axial package. The 1.5KE supplier device package code is the same as the series name. Tape-and-box packaging suits hand-insertion or low-volume assembly. No power-line protection — this is a secondary-side transient suppressor, not a primary mains protector.","metaTitle":"1.5KE400-E3/73 Vishay TransZorb TVS, 1.5kW, 574V Clamp","metaDescription":"Vishay 1.5KE400-E3/73 TransZorb Zener TVS, 1500W peak pulse, 324V standoff, 574V clamp. Obsolete; sourced to order. RFQ for availability.","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 & Box (TB)","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":"1.5KE400","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"360V","Voltage - Clamping (Max) @ Ipp":"574V","Voltage - Reverse Standoff (Typ)":"324V","Current - Peak Pulse (10/1000µs)":"2.6A"}},"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 1.5KE400-/73 and how is it quoted?","answer":"The 1.5KE400-/73 is obsolete and sourced through independent distribution. Submit an RFQ for a lot-specific offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400-E3-73","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/1.5KE400-E3-73 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}}