{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6149AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6149AUS","canonicalUrl":"https://icboms.com/microchip/1N6149AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6149AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6149AUS, Zener TVS diode, 1500W peak pulse power, 15.2V reverse standoff, 27.7V clamping, bidirectional, SQ-MELF C package, -55°C to 175°C operation.","salesMarkdown":"## What the 1500W peak pulse rating means for your rail protection The 1N6149AUS is a bidirectional Zener TVS diode rated for 1500W peak pulse power at 10/1000µs waveform. That 1500W rating is the energy-handling ceiling for a single pulse — beyond it the junction overheats and the protection collapses. For a 15.2V rail, the 54.2A peak pulse current tells you the diode can sink a direct lightning surge or inductive kick without failing short. ## Voltage window: standoff, breakdown, and clamping Reverse standoff is 15.2V — the rail voltage the diode leaves alone during normal operation. Breakdown starts at 19V minimum, and clamping is 27.7V maximum at the rated pulse current. That 8.5V gap between standoff and clamping is the voltage the downstream circuitry must survive; if your load's absolute maximum is 26V, this part clamps too high and you need a lower-voltage device. ## Temperature range and package — built for harsh environments The SQ-MELF C package is a hermetic surface-mount ceramic body; it resists moisture and thermal cycling better than plastic SMD packages, which matters for long-life mission equipment. ## Active lifecycle — no end-of-life pressure For a BOM that needs long-term support — say a five-year defence contract — this removes the pressure to qualify a second source now. The base product number is 1N6149, so the same die is available in other package variants if the SQ-MELF footprint is not a fit.","metaTitle":"1N6149AUS Zener TVS Diode – 1500W, 15.2V Standoff, SQ-MELF","metaDescription":"1N6149AUS from Microchip Technology: Zener TVS diode, 1500W peak pulse power, 15.2V reverse standoff, bidirectional, SQ-MELF C package. 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, C","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6149","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"C, SQ-MELF","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"15.2V","Current - Peak Pulse (10/1000µs)":"54.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.6000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.microsemi.com/document-portal/doc_download/127854-1n6138us-1n6173aus-tvs-diode-series-datasheet","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the 1N6149AUS or request a quote?","answer":"Submit an RFQ with your target quantity and lead-time requirement; we source against the BOM line and confirm availability and current pricing at quote time. No stock-holding claim — every order is sourced per your request."},{"question":"Is the 1N6149AUS bidirectional or unidirectional?","answer":"It is a single bidirectional channel, meaning it clamps both positive and negative transients symmetrically. That is the right choice for AC-coupled signal lines or bipolar supply rails where the surge can swing either polarity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6149AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6149AUS 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}}