{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6373","brand":"onsemi","brandSlug":"onsemi","productSlug":"1N6373","canonicalUrl":"https://icboms.com/onsemi/1N6373","factsUrl":"https://icboms.com/api/mcp/products/1N6373","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ 1N6373, Zener TVS diode, 1500W peak pulse power, 5V reverse standoff, 9.4V clamp, DO-201AD axial, through-hole, -65°C to 175°C junction range.","salesMarkdown":"## 1500W peak pulse in a DO-201AD axial body The 1N6373 is a single-channel unidirectional Zener TVS from onsemi's Mosorb™ series, rated for 1500W peak pulse power at 10/1000 µs waveform. The 5V reverse standoff voltage and 9.4V clamp at Ipp make it a direct fit for protecting 5V DC rails in telecom, industrial, and automotive auxiliary circuits. The DO-201AD axial package (9.5 mm body length) is a through-hole form factor that survives wave solder and high-vibration environments without the solder-joint fatigue risk of an SMD package. ## Breakdown and clamp voltages for 5V rail protection Minimum breakdown voltage is 6V, with a typical standoff of 5V and maximum clamp at 9.4V. The 4.4V margin between standoff and clamp means the protected rail sees less than 10V during a transient — well within the absolute max of most 5V logic and linear regulators. No power line protection feature, so it is a straight shunt device; the TVS absorbs the surge, not a series element. onsemi lists the 1N6373 as Obsolete. For BOM lines that still call out this exact order code, the only supply path is the open market — sourced per RFQ against the buyer's quantity. The -65°C to 175°C junction range exceeds the typical industrial temperature envelope, so any replacement must match that thermal headroom if the application runs hot.","metaTitle":"1N6373 Zener TVS Diode, 1500W, DO-201AD","metaDescription":"onsemi Mosorb™ 1N6373 Zener TVS: 1500W peak pulse, 5V standoff, 9.4V clamp, DO-201AD axial. Obsolete – quoted per RFQ; replacement options available.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"Mosorb™","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6373","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"6V","Voltage - Clamping (Max) @ Ipp":"9.4V","Voltage - Reverse Standoff (Typ)":"5V","Current - Peak Pulse (10/1000µs)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b7e9ebd201a66815e17f0ecd34810bb8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for the 1N6373?","answer":"The evidence does not list an official onsemi replacement. A cross-shop candidate in the same Mosorb™ family would be the 1N6374 (higher standoff voltage). Confirm the 5V rail voltage and peak pulse power requirement before substituting — the 1N6374 has a different clamp threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1N6373","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1N6373 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:22:13.109Z","lastPublished":"2026-07-17T20:22:13.109Z","indexable":true}}