{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6121AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6121AUS","canonicalUrl":"https://icboms.com/microchip/1N6121AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6121AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6121AUS, Zener TVS Diode, 32.7V reverse standoff, 40.9V min breakdown, 59.1V max clamp at 8.5A (10/1000µs), 500W peak pulse power, SQ-MELF B package, surface mount, active lifecycle.","salesMarkdown":"## Breakdown and clamping — the two numbers that define the protection threshold This 1N6121AUS is a Zener-type transient-voltage-suppression (TVS) diode from Microchip, designed to clamp overvoltage transients on a 32.7 V nominal rail. The breakdown voltage (Vbr) is guaranteed at a minimum of 40.9 V, meaning the device starts conducting avalanche current when the line exceeds that threshold. The clamping voltage (Vc) is held to a maximum of 59.1 V at the peak pulse current of 8.5 A under the 10/1000 µs waveform — this is the voltage the protected circuitry must survive without damage. The SQ-MELF B package is a hermetic, surface-mount ceramic body — common in high-reliability and military/aerospace designs where moisture sensitivity and long-term field life are critical. This wide range suits avionics, downhole, and outdoor telecom equipment where the ambient temperature can exceed 125°C. The hermetic MELF package also resists moisture ingress better than molded plastic SMDs, which matters for conformal-coated assemblies or high-humidity environments. ## Lifecycle and sourcing — active production, no obsolescence concern For volume BOM commitments, we source against the RFQ quantity through our multi-supplier network — no stock-holding claim, but the active status means lead times are predictable. The SQ-MELF package is a standard Microchip offering, so alternate date-code lots are traceable through the authorized chain.","metaTitle":"1N6121AUS Zener TVS Diode – Microchip, 40.9V Breakdown, 500W","metaDescription":"1N6121AUS from Microchip Technology – Zener TVS diode, 32.7V reverse standoff, 40.9V min breakdown, 59.1V clamp at 8.5A (10/1000µs), 500W peak pulse power.","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","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","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)":"40.9V","Voltage - Clamping (Max) @ Ipp":"59.1V","Voltage - Reverse Standoff (Typ)":"32.7V","Current - Peak Pulse (10/1000µs)":"8.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dbd5050221203b922ebce5a7a6e86e6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can 1N6121AUS be used for overvoltage protection?","answer":"Yes, this is a Zener TVS diode specifically designed for overvoltage transient suppression. With a 32.7 V reverse standoff voltage and 500 W peak pulse power rating, it clamps transients on a nominal 32.7 V rail to a maximum of 59.1 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6121AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6121AUS 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}}