{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE43-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE43-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE43-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, 1.5KE43-/73, 1500W Peak Pulse, 34.8V Reverse Standoff, DO-201AA Axial, Through Hole, Tape & Box.","salesMarkdown":"## What this 1.5 kW TVS actually clamps The 1.5KE43-E3/73: The 1.5KE43-/73 is a 1500 W peak-pulse Zener-type TVS from Vishay's TransZorb® series, designed to clamp transients on general-purpose DC rails. Its 34.8 V reverse standoff means it sits across a 24 V or 28 V bus without conducting in normal operation, and the 38.7 V minimum breakdown voltage ensures the avalanche triggers before the downstream silicon sees damage. When the transient hits, the diode clamps at 61.9 V maximum while shunting 24.2 A of peak pulse current (10/1000 µs waveform). That 1.5 kW rating is the product of clamp voltage and peak current — a standard TVS sizing metric for a single 1 ms surge event at 25 °C. ## DO-201AA axial package and board fit Housed in a DO-201AA (DO-27) axial-lead package, this part is a through-hole device intended for point-to-point wiring or PCB mounting with 0.100-inch pitch holes. The 1.5KE supplier device package code matches the standard JEDEC outline — no footprint surprises if you have placed a 1.5KE-series part before. ## Obsolete — sourcing reality for the 1.5KE43-E3/73 Vishay lists the 1.5KE43-/73 as obsolete.","metaTitle":"1.5KE43-E3/73 Vishay TVS Diode, 1.5kW, 34.8V Standoff","metaDescription":"Obsolete 1.5KE43-E3/73 Vishay TransZorb® TVS, 1500W peak pulse, 34.8V reverse standoff, DO-201AA. 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 & 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":"1.5KE43","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"38.7V","Voltage - Clamping (Max) @ Ipp":"61.9V","Voltage - Reverse Standoff (Typ)":"34.8V","Current - Peak Pulse (10/1000µs)":"24.2A"}},"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 is the closest pin-compatible alternative to the 1.5KE43-/73?","answer":"Any replacement must be evaluated for breakdown voltage (38.7 V min), standoff (34.8 V), clamp voltage (61.9 V), and the DO-201AA axial package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE43-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/1.5KE43-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}}