{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE220A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE220A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE220A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE220A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® TVS, Type Zener, 1.5KE220A-/51, 1500W peak pulse, 328V clamping, DO-201AA/DO-27 Axial, Bulk.","salesMarkdown":"## 1.5 kW TransZorb in a DO-27 barrel The 1.5KE220A-E3/51: Its 328 V clamping voltage at 4.6 A peak pulse current means a 185 V reverse standoff — the rail it protects should never exceed that in normal operation, or the diode starts conducting. The DO-201AA (DO-27) axial-lead package is a through-hole workhorse — easy to hand-replace on a rework bench if it ever takes a hit that exceeds its single-pulse rating. ## Last-buy status and sourcing reality For a BOM line already qualified to the 1.5KE220A, the last-buy window means procurement should source the balance of the production run now. ## Clamping voltage and peak pulse current The 328 V maximum clamping voltage at 4.6 A (10/1000 µs) sets the survivable transient ceiling — any spike above that level forward-biases the Zener junction and the diode shunts the energy to ground. The 209 V minimum breakdown voltage gives a guard band below the clamp point; the 185 V reverse standoff is the continuous DC rail the part sits across without conducting leakage. At 1500 W peak pulse, this TVS handles the energy of a single lightning-induced surge or inductive load dump on a 185 V DC bus. The 10/1000 µs waveform is the telecom standard — a shorter pulse (8/20 µs) would allow higher peak current before the junction temperature limit is reached.","metaTitle":"1.5KE220A-E3/51 Vishay TVS, 1.5kW, 328V Clamp, DO-27","metaDescription":"Vishay 1.5KE220A-E3/51 TransZorb TVS, 1500W peak pulse, 328V clamping, DO-201AA axial. Last-buy status — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Last Time Buy","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE220","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"209V","Voltage - Clamping (Max) @ Ipp":"328V","Voltage - Reverse Standoff (Typ)":"185V","Current - Peak Pulse (10/1000µs)":"4.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7268","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get pricing and availability for 1.5KE220A-/51?","answer":"Submit an RFQ through this listing. The part is sourced through authorized and surplus distribution channels."},{"question":"What is the closest pin-compatible alternative in the TransZorb family?","answer":"No official successor is recorded on this line. Other 1.5 kW TransZorb parts in the DO-27 package share the same footprint and power rating but differ in breakdown voltage — a direct replacement would need to match the 209 V minimum breakdown and 185 V standoff of the 1.5KE220A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE220A-E3-51","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/1.5KE220A-E3-51 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}}