{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE400-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS, 1.5KE400-/54, 1500W peak pulse, 324V standoff, 574V clamp, DO-201AA axial, Tape & Reel.","salesMarkdown":"## TransZorb TVS — what the ratings mean for a protection line The 1.5KE400-E3/54: A 324 V reverse standoff voltage means the line it protects can run at that DC or AC peak without the diode conducting; clamping starts at 360 V minimum breakdown and hard-clamps at 574 V maximum, limiting the transient energy to 2.6 A peak pulse current. ## Obsolete — sourcing through independent channels Vishay has marked the 1.5KE400-/54 as obsolete. For a BOM that requires this exact clamping voltage and footprint, the DO-201AA axial package is common across many TVS families — a board-level review of the standoff and clamping specs against current-production alternatives is recommended before committing to a last-time-buy quantity. Through-hole DO-201AA (DO-27) axial package — the lead diameter and body length match the standard 0.100-inch pitch hole pattern on most power-entry PCBs. The 1.5KE series uses a single unidirectional Zener junction; polarity is marked by the cathode band. The 1500 W rating assumes the leads are soldered into a minimum 0.040-inch diameter plated through-hole on a 1 oz copper board; shorter lead length reduces the inductive loop and improves clamping response time.","metaTitle":"1.5KE400-E3/54 Vishay TransZorb TVS, 1500W, 574V Clamp","metaDescription":"Vishay 1.5KE400-E3/54 Zener TVS diode, 1500W peak pulse, 574V clamping, DO-201AA axial. Obsolete — sourced to order. Request a quote.","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":"1.5KE400","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":"$1.2700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the 1.5KE400-/54 discontinued?","answer":"Yes, Vishay lists the 1.5KE400-/54 as obsolete."},{"question":"What package does the 1.5KE400-/54 come in?","answer":"It is supplied in a DO-201AA (DO-27) axial leaded package, on Tape & Reel (TR) per the -/54 suffix."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400-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/1.5KE400-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}}