{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE400CA/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE400CA-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400CA-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE400CA%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, bidirectional, 1.5KE400CA/54, 1500W peak pulse, 548V clamping, DO-201AA axial, tape and reel.","salesMarkdown":"## TVS diode, not a Zener regulator The 1.5KE400CA/54 is a bidirectional TransZorb® transient voltage suppressor, not a Zener voltage regulator — the series name TransZorb is Vishay's trademark for TVS diodes designed to clamp fast overvoltage transients, not to provide steady DC regulation. ## Protection threshold and operating range The reverse standoff voltage is 342 V — the rail voltage below which the diode remains non-conducting in normal operation. Breakdown occurs at a minimum of 380 V, and clamping is specified at 548 V maximum under the 2.7 A peak pulse current. The operating junction temperature range spans -55°C to 175°C, covering military and industrial thermal environments without derating concerns at the extremes. ## Obsolete — sourcing through independent channels Available through independent surplus and broker channels. Quantities are lot-specific; each RFQ is confirmed against current inventory holdings. No pin-compatible replacement from Vishay is documented, so a board-level redesign may be required for long-term sustainment.","metaTitle":"Vishay 1.5KE400CA/54 TransZorb TVS, 1500W, 548V Clamp","metaDescription":"Obsolete Vishay 1.5KE400CA/54 bidirectional TVS diode, 1500W peak pulse, 548V clamping. 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":"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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Voltage - Breakdown (Min)":"380V","Voltage - Clamping (Max) @ Ipp":"548V","Voltage - Reverse Standoff (Typ)":"342V","Current - Peak Pulse (10/1000µs)":"2.7A"}},"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 1.5KE400CA/54 and how do I get a price?","answer":"The 1.5KE400CA/54 is obsolete but available through independent distribution. Submit an RFQ for current availability and pricing — each lot is confirmed at quote time, and quantities are verified against on-hand surplus inventory."},{"question":"What is the closest pin-compatible alternative to 1.5KE400CA/54 in this Circuit Protection family?","answer":"No official pin-compatible successor from Vishay is documented in the lifecycle data. The 1.5KE series includes other voltage variants, but a direct replacement with identical 342 V standoff and 548 V clamp is not listed as a cross-reference. A parametric search within the TransZorb family is recommended for new designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE400CA-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/1.5KE400CA-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}}