{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6166A","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6166A","canonicalUrl":"https://icboms.com/microchip/1N6166A","factsUrl":"https://icboms.com/api/mcp/products/1N6166A","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6166A, Zener TVS diode, 1500W (1.5kW) peak pulse power, 95V min breakdown, 137.6V clamping @ 10.9A, bidirectional, through-hole axial package, -55°C to 175°C.","salesMarkdown":"## 137.6V clamping at 10.9A – surge protection for 76V rails The 1N6166A: Its 137.6V maximum clamping voltage at 10.9A peak pulse current means a 76V nominal rail sees a clamp that stays well below the typical 150V–200V failure threshold of downstream DC-DC converters and line drivers. The 95V minimum breakdown voltage gives a 19V guard band above the 76V reverse standoff — enough margin to avoid false triggering from normal line ripple or load transients, but tight enough to catch a surge before it reaches the protected IC. ## Bidirectional – one device for differential or AC lines With a single bidirectional channel, the 1N6166A clamps both polarities symmetrically. This suits RS-485, CAN bus, or transformer-coupled Ethernet pairs where the signal swings above and below ground — a unidirectional TVS would need two devices back-to-back. The axial through-hole package (B, Axial) is a legacy footprint still common in industrial PSUs, motor drives, and telecom line cards where the board is single-sided or the TVS is hand-soldered during rework. ## Active production – no end-of-life watch needed The 175°C ceiling matches the hot-end junction limit of many high-reliability DC-DC converters.","metaTitle":"1N6166A Zener TVS Diode – 1500W, 95V Breakdown, Axial","metaDescription":"1N6166A from Microchip: Zener TVS, 1500W peak pulse, 95V min breakdown, 137.6V clamping, bidirectional, -55°C to 175°C, axial package. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Microchip Technology","Type":"Zener","Series":"-","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"B, Axial","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Voltage - Breakdown (Min)":"95V","Voltage - Clamping (Max) @ Ipp":"137.6V","Voltage - Reverse Standoff (Typ)":"76V","Current - Peak Pulse (10/1000µs)":"10.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is the 1N6166A suitable for protecting a 100V rail?","answer":"No. The reverse standoff voltage is 76V, meaning the device starts leaking significantly above that. For a 100V rail, you need a TVS with a standoff of at least 100V — the 1N6166A would be in continuous breakdown and fail thermally."},{"question":"Is the 1N6166A bidirectional?","answer":"Yes, it has a single bidirectional channel, clamping both positive and negative surges symmetrically. This is ideal for AC or differential signal lines where the signal polarity reverses."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6166A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6166A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}