{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6122AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6122AUS","canonicalUrl":"https://icboms.com/microchip/1N6122AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6122AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6122AUS, Zener TVS Diode, 500W Peak Pulse Power, 35.8V Reverse Standoff, 64.6V Clamp, SQ-MELF B Package, Surface Mount, Active","salesMarkdown":"## 500W Zener TVS in a Hermetic SQ-MELF Package The 1N6122AUS: It clamps at 64.6V max from a 35.8V reverse standoff, with a minimum breakdown of 44.7V. That puts it on a 28V or 36V rail — the clamp voltage stays under 65V, which keeps downstream silicon safe during a surge. The SQ-MELF B package is a hermetic ceramic body with metallized end caps — no plastic molding. That matters for high-humidity or outgassing-sensitive environments, and it survives rework cycles under hot air better than a plastic SMC because the ceramic doesn't soften. The B suffix means the base part number 1N6122 is screened to the JAN drawing; the AUS variant adds the surface-mount MELF termination. ## Temperature Range and Junction Rating At 175°C the leakage current rises, but the clamping voltage holds. For a 500W pulse at 25°C, derate linearly above 25°C per the datasheet curve; at 175°C the peak pulse power drops to roughly 20% of the 500W rating. If the board lives in a 125°C engine bay, budget the derated surge capacity. ## Active Production – No EOL Risk Microchip lists the 1N6122AUS as Active. That means the part is still in wafer fab and assembly; lead times are quoted per RFQ against the BOM quantity. The SQ-MELF package is a standard Microchip hermetic line — not a niche package that gets discontinued early.","metaTitle":"1N6122AUS Zener TVS Diode – 500W, SQ-MELF","metaDescription":"1N6122AUS Zener TVS diode from Microchip: 500W peak pulse power, 35.8V standoff, 64.6V clamp, SQ-MELF B package, -55°C to 175°C. Active lifecycle, surface","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":"Surface Mount","Package / Case":"SQ-MELF, B","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"1N6122","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"B, SQ-MELF","Voltage - Breakdown (Min)":"44.7V","Voltage - Clamping (Max) @ Ipp":"64.6V","Voltage - Reverse Standoff (Typ)":"35.8V","Current - Peak Pulse (10/1000µs)":"7.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.7200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dbd5050221203b922ebce5a7a6e86e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power of the 1N6122AUS?","answer":"500W peak pulse power per the 10/1000µs waveform. That rating is at 25°C; derate linearly above 25°C to zero at 175°C junction temperature."},{"question":"What is the typical lead time for the 1N6122AUS?","answer":"As an active Microchip hermetic part, lead times are quoted per RFQ. Typical industry lead for hermetic MELF TVS diodes ranges from 8 to 16 weeks depending on wafer supply and assembly backlog. Contact us with your quantity and target delivery date for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6122AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6122AUS 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}}