{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6128A","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6128A","canonicalUrl":"https://icboms.com/microchip/1N6128A","factsUrl":"https://icboms.com/api/mcp/products/1N6128A","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6128A, Zener TVS diode, 500 W peak pulse power, 62.2 V reverse standoff, 112.8 V clamping, single bidirectional channel, through-hole axial package.","salesMarkdown":"## Zener TVS diode for 62.2 V rail protection The 1N6128A is a Zener-type transient voltage suppressor from Microchip Technology, designed to clamp overvoltage events on a 62.2 V nominal rail. Its 500 W peak pulse power rating gives it the energy capacity for industrial control, telecom, and power-supply secondary-side protection where the line sees repetitive surges. With a minimum breakdown voltage of 77.9 V and a maximum clamping voltage of 112.8 V at 4.4 A peak pulse current, this part leaves a comfortable margin above the 62.2 V standoff — the rail never sees the clamp engage during normal operation. ## Bidirectional channel and wide temperature envelope A single bidirectional channel means the 1N6128A clamps both positive and negative transients symmetrically — useful on AC signal lines or DC rails where polarity reversal is possible. The junction is rated for -55°C to 175°C, so it survives under-hood automotive ambient and high-side switching hot spots without derating the pulse power. The through-hole axial package (B, Axial per the supplier device code) suits point-to-point wiring on terminal strips or PCB layouts where a TO-220 or surface-mount part would complicate the thermal path. No power line protection feature is claimed — this is a pure transient clamp, not a filter. ## Active production — sourcing via RFQ Microchip lists the 1N6128A as Active, so no end-of-life notice is pending. The base product number is 1N6128, and the full order code includes the 'A' suffix for the specific breakdown tolerance bin.","metaTitle":"1N6128A Zener TVS Diode – 500 W, 62.2 V Standoff","metaDescription":"1N6128A Zener TVS diode from Microchip Technology. 500 W peak pulse power, 62.2 V reverse standoff, 112.8 V clamping.","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","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"1N6128","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Voltage - Breakdown (Min)":"77.9V","Voltage - Clamping (Max) @ Ipp":"112.8V","Voltage - Reverse Standoff (Typ)":"62.2V","Current - Peak Pulse (10/1000µs)":"4.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.2400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c72f565c96d1fb1ddee384734173c93c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the 1N6128A a bidirectional TVS diode?","answer":"Yes, it has a single bidirectional channel, clamping both positive and negative transients symmetrically. The Zener structure is inherently bidirectional in this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6128A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6128A 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}}