{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE120-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE120-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE120-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE120-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS, 1.5KE120-/54, 1500W peak pulse, 97.2V reverse standoff, 173V clamping, DO-201AA axial, through hole.","salesMarkdown":"## TVS diode for 100V rail protection The 1.5KE120-E3/54: Its 97.2V reverse standoff voltage and 108V minimum breakdown voltage mean it sits across a nominal 100V DC rail, clamping transients at 173V before they reach the downstream silicon. This is a unidirectional part — one channel, cathode band on the DO-201AA axial body. The through-hole package suits point-to-point wiring or PCB mounting where the lead bend absorbs thermal cycling strain. ## What the ratings mean for your protection design The 1500W peak pulse rating is the device's energy-handling capacity under the standard 10/1000µs test pulse. At the clamping voltage of 173V, the peak pulse current is 8.7A — the diode shunts that current to ground, holding the rail below the 173V ceiling. The wide range suits outdoor telecom or industrial enclosures where ambient heat plus self-heating from repetitive surges could push a narrower-grade part out of its safe operating area. The 97.2V standoff means it stays transparent below that voltage; leakage current is negligible until the transient pushes the rail above the breakdown threshold. ## Obsolete — sourcing through independent channels Vishay lists the 1.5KE120-/54 as obsolete. For a BOM line already qualified to this TVS, the DO-201AA axial footprint and 1500W pulse rating are the fit parameters. If a board spin is acceptable, a functional equivalent in the same package class may be cross-referenced at quote time.","metaTitle":"1.5KE120-E3/54 Vishay TransZorb TVS, 1500W, 97.2V","metaDescription":"Vishay 1.5KE120-E3/54 TransZorb Zener TVS diode, 1500W peak pulse, 97.2V standoff, DO-201AA axial. Obsolete, sourced to order. Request 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":"1.5KE120","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"108V","Voltage - Clamping (Max) @ Ipp":"173V","Voltage - Reverse Standoff (Typ)":"97.2V","Current - Peak Pulse (10/1000µs)":"8.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE120-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/1.5KE120-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}}