{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE170C-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE170C-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE170C-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1.5KE170C-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® bidirectional TVS diode, 1.5KE170C-/73, 1500W peak pulse power, 138V reverse standoff, 244V clamping, DO-201AA axial-lead, Tape & Box.","salesMarkdown":"## Clamping voltage and the protection margin it sets The 1.5KE170C-E3/73: The 244 V maximum clamping voltage at 6.1 A peak pulse current defines the upper voltage any parallel load sees during a surge. A downstream DC-DC converter with a 250 V absolute-max input sits inside the margin; one rated 200 V does not. Breakdown occurs between 153 V minimum and the clamping threshold — the device starts conducting well before the rail reaches destructive levels, shunting the surge current through the junction rather than the load. The bidirectional configuration (single die, back-to-back Zener) means the same part clamps positive and negative transients equally — one order code covers both polarities on a bipolar signal line or an AC-coupled bus. ## Obsolete — sourcing reality for this Vishay TransZorb Vishay lists the 1.5KE170C-/73 as obsolete. No official successor order code is recorded from the manufacturer. The DO-201AA (DO-27) axial-lead package is a standard footprint — a replacement from the same 1.5KE family with matching standoff and bidirectional polarity fits the same board holes, but each candidate must be verified against the original clamping spec.","metaTitle":"Vishay 1.5KE170C-E3/73 TransZorb TVS, 1500W Bidirectional","metaDescription":"Obsolete Vishay 1.5KE170C-E3/73 TransZorb bidirectional TVS diode, 1500W peak pulse, 138V standoff, DO-201AA.","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","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 1.5KE170C-/73 used for?","answer":"It is a bidirectional TVS diode used to clamp voltage transients on DC power rails or signal lines up to 138 V nominal. The 1500 W peak pulse rating suits it for secondary surge protection in industrial power supplies, telecom rectifiers, and general-purpose circuit protection boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE170C-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/1.5KE170C-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}}