{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6146US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6146US","canonicalUrl":"https://icboms.com/microchip/1N6146US","factsUrl":"https://icboms.com/api/mcp/products/1N6146US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6146US, Zener TVS Diode, 1500W peak pulse power, 11.4V reverse standoff, 21V clamping, bidirectional, SQ-MELF surface mount, -55°C to 175°C","salesMarkdown":"## What this Zener TVS protects against The 1N6146US: It clamps transients at 21V maximum when the surge current reaches 71.4A, with a reverse standoff voltage of 11.4V — meaning it stays off the rail below that DC level and only conducts during an overvoltage event. The SQ-MELF package (C case) is a surface-mount hermetic cavity designed for high-reliability applications. The -55°C to 175°C junction temperature range suits environments where the board sees wide thermal swings — avionics, downhole instrumentation, or outdoor telecom cabinets. ## Clamping voltage and surge current — sizing the protection margin The 21V clamping voltage at 71.4A peak pulse current defines the maximum voltage the protected circuit sees during a surge. For a 12V rail, the 11.4V standoff leaves 9.6V of headroom before the diode starts conducting — enough margin for normal ripple without nuisance triggering. Bidirectional construction means a single device clamps both positive and negative transients, which saves board space on AC-coupled or bipolar signal lines compared to using two unidirectional diodes back-to-back. ## Lifecycle and supply posture The base product number 1N6146 covers a family of voltage options; the US suffix denotes the SQ-MELF surface-mount package. Sourced per RFQ — confirm lead time and pricing against your BOM quantity at quote time.","metaTitle":"1N6146US Zener TVS Diode – 1500W, 11.4V Standoff, SQ-MELF","metaDescription":"1N6146US from Microchip Technology: 1500W peak pulse power Zener TVS, 11.4V reverse standoff, 21V clamping, bidirectional, 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":"-","Packaging":"Bulk","Part Status":"Active","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"SQ-MELF, C","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6146","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)":"14.25V","Voltage - Clamping (Max) @ Ipp":"21V","Voltage - Reverse Standoff (Typ)":"11.4V","Current - Peak Pulse (10/1000µs)":"71.4A"}},"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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6146US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6146US 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}}