{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE170-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE170-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE170-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE170-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, 1.5KE170-/73, 1500W peak pulse, 138V reverse standoff, 244V clamp, DO-201AA axial, unidirectional.","salesMarkdown":"## What the 1500W rating means for your board The 1.5KE170-E3/73: That 1500W rating is the device's ability to absorb a transient without failing — it is not a continuous dissipation figure. For a 244V clamp voltage, the peak current works out to 6.1A, which is the current the diode shunts during the surge event. The reverse standoff voltage is 138V, meaning the diode stays off below that rail voltage and only starts conducting when the transient pushes past the 153V minimum breakdown. This part is not intended for power line protection — the spec explicitly flags Power Line Protection as No. ## Obsolete — sourcing the 1.5KE170-E3/73 today Vishay has marked the 1.5KE170-/73 as Obsolete. The part is sourced to order against an RFQ. ## DO-201AA axial — board-fit and thermal note The 1.5KE170-/73 comes in a DO-201AA (DO-27) axial-lead package, through-hole mount. The junction operates from -55°C to 175°C, which covers industrial and most automotive under-hood environments. The 1500W peak pulse rating assumes the leads are soldered into a board with adequate copper area to sink the transient heat — a free-air or minimal-pad installation derates the surge capability.","metaTitle":"1.5KE170-E3/73 Vishay TVS, 1500W, 138V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE170-E3/73 TransZorb TVS, 1500W peak pulse, 138V reverse standoff, 244V clamp. Obsolete - sourced to order against RFQ. DO-201AA axial.","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":"1.5KE170","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"153V","Voltage - Clamping (Max) @ Ipp":"244V","Voltage - Reverse Standoff (Typ)":"138V","Current - Peak Pulse (10/1000µs)":"6.1A"}},"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 peak pulse power rating of the 1.5KE170-/73?","answer":"It is rated for 1500W (1.5kW) peak pulse power at the 10/1000µs waveform. At a 244V clamp voltage, the peak pulse current is 6.1A."},{"question":"What package does the 1.5KE170-/73 come in?","answer":"It is supplied in a DO-201AA (DO-27) axial-lead through-hole package, shipped in Tape & Box (TB) format."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE170-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/1.5KE170-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}}