{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6125AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6125AUS","canonicalUrl":"https://icboms.com/microchip/1N6125AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6125AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6125AUS, Zener TVS Diode, Bidirectional, 500 W Peak Pulse Power, SQ-MELF B Package, Surface Mount","salesMarkdown":"## Bidirectional Zener TVS – 47.1 V Standoff, 500 W Peak Pulse The 1N6125AUS is a bidirectional Zener transient-voltage suppressor from Microchip Technology, designed to clamp transients on a 47.1 V reverse standoff rail to a maximum clamping voltage of 85.3 V at the peak pulse current of 5.9 A. The 500 W peak pulse power rating (10/1000 µs waveform) means this part can absorb repetitive surges on a 48 V nominal bus without derating into the thermal limit — a common requirement in telecom and industrial power supplies. Packaged in a SQ-MELF, B case, the 1N6125AUS is a surface-mount device suited for automated assembly on boards where through-hole TVS parts would add height or assembly steps. The SQ-MELF body offers a low-inductance path for fast transients, which matters when the clamping voltage must stay tight against the 85.3 V ceiling. For a BOM engineer sizing protection for an outdoor telecom cabinet or an avionics power bus, the 175°C upper limit means the part does not need secondary derating when ambient temperature pushes past 85°C — the junction can run hot without shifting the 58.9 V minimum breakdown voltage. ## Active Production – Sourcing Through Authorized Distribution Microchip lists the 1N6125AUS as Active, so there is no last-time-buy clock or EOL risk on the horizon. The base product number is 1N6125, and the 'AUS' suffix denotes the SQ-MELF surface-mount package variant.","metaTitle":"1N6125AUS Zener TVS Diode – Microchip, 500 W, SQ-MELF","metaDescription":"1N6125AUS from Microchip: bidirectional Zener TVS, 500 W peak pulse, 47.1 V standoff, 85.3 V clamp. SQ-MELF surface mount. Active lifecycle.","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":"1N6125","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)":"58.9V","Voltage - Clamping (Max) @ Ipp":"85.3V","Voltage - Reverse Standoff (Typ)":"47.1V","Current - Peak Pulse (10/1000µs)":"5.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.2400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dbd5050221203b922ebce5a7a6e86e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between the 1N6125AUS and the 1N6125 (through-hole) variant?","answer":"The 1N6125AUS uses the SQ-MELF, B surface-mount package, while the base 1N6125 is typically a through-hole package. The electrical specs — 47.1 V standoff, 85.3 V clamp, 500 W peak pulse — are identical. The AUS suffix is the surface-mount version for designs that require a smaller footprint or automated assembly."},{"question":"Can the 1N6125AUS replace a 1N6125CA in a circuit?","answer":"The 1N6125CA is a bidirectional Zener TVS with the same 47.1 V standoff and 500 W rating, but it typically comes in a DO-202AA (DO-13) through-hole package. The 1N6125AUS is the SQ-MELF surface-mount equivalent. Electrically they are interchangeable, but the footprint and mounting method differ — verify the PCB land pattern before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6125AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6125AUS 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}}