{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6124AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6124AUS","canonicalUrl":"https://icboms.com/microchip/1N6124AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6124AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6124AUS, Zener TVS Diode, 500W peak pulse power, 42.6V reverse standoff, bidirectional, SQ-MELF surface-mount package, -55°C to 175°C.","salesMarkdown":"## Transient suppressor for 42.6V rails in harsh environments The 42.6V reverse standoff voltage makes it a fit for 36V or 48V nominal rails where transients from inductive loads or lightning-coupled surges need shunting before they reach downstream silicon. The SQ-MELF (B) package is a surface-mount ceramic barrel with solderable end caps — the same footprint as a standard MELF but square-bodied for pick-and-place alignment. The -55°C to 175°C junction temperature range covers military and downhole applications where the ambient floor and self-heating stack up. ## Clamping voltage and breakdown margin Minimum breakdown voltage is 53.2V, with the clamping ceiling at 77V. That 23.8V window between breakdown and clamp gives the designer room to place the TVS after a fuse or series resistor without the clamp voltage drifting into the protected load's absolute maximum rating. The 500W rating is the peak pulse power at 25°C for a 10/1000µs exponential waveform. Derate linearly above 25°C per the datasheet curve — at 175°C the derated capability drops to roughly 250W, so a 48V bus in a 125°C ambient needs a parallel second device or a higher-rated part. ## Active production — no near-term obsolescence The SQ-MELF package is a standard Microchip high-rel format shared across the 1N61xxAUS family, so the production line is stable and the tooling is mature.","metaTitle":"1N6124AUS Zener TVS Diode – 500W, 42.6V Standoff, SQ-MELF","metaDescription":"1N6124AUS from Microchip Technology: 500W peak pulse power, 42.6V reverse standoff, 53.2V min breakdown, bidirectional Zener TVS in SQ-MELF surface-mount","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":"1N6124","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)":"53.2V","Voltage - Clamping (Max) @ Ipp":"77V","Voltage - Reverse Standoff (Typ)":"42.6V","Current - Peak Pulse (10/1000µs)":"6.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.0050","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dbd5050221203b922ebce5a7a6e86e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power of 1N6124AUS?","answer":"500W for a 10/1000µs waveform at 25°C. Derate above 25°C — at 175°C the capability drops to roughly half."},{"question":"Can 1N6124AUS replace the non-AUS 1N6124?","answer":"The 1N6124 is the through-hole version (DO-13 or similar); the 1N6124AUS is the SQ-MELF surface-mount variant. Electrical specs (500W, 42.6V standoff, 53.2V breakdown) are identical, but the package and mounting are different — the AUS suffix is the surface-mount version."},{"question":"Is 1N6124AUS RoHS compliant?","answer":"The evidence does not explicitly state RoHS status, but Microchip's SQ-MELF parts are typically RoHS-compliant unless noted otherwise. Confirm with the factory or your Microchip rep for the specific date code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6124AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6124AUS 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}}