{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6112US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6112US","canonicalUrl":"https://icboms.com/microchip/1N6112US","factsUrl":"https://icboms.com/api/mcp/products/1N6112US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6112US, Zener TVS Diode, 500W Peak Pulse Power, 13.7V Reverse Standoff, Bidirectional, SQ-MELF B Package, -55°C to 175°C","salesMarkdown":"## 500W bidirectional Zener TVS in a hermetic SQ-MELF The 1N6112US is a 500W peak pulse power Zener TVS diode from Microchip Technology, configured as a single bidirectional channel. It clamps transients at 26.36V maximum with a 13.7V reverse standoff voltage, making it a direct fit for protecting 12V–15V rails in harsh environments. The SQ-MELF B package is a hermetic surface-mount ceramic body rated for -55°C to 175°C junction temperature — suited to avionics, downhole, and military power buses where plastic-packaged TVS devices would degrade. ## Breakdown, clamping, and standoff — the protection window The 1N6112US has a minimum breakdown voltage of 16.25V, a reverse standoff of 13.7V, and a maximum clamping voltage of 26.36V at the 18.91A peak pulse current (10/1000 µs waveform). The 2.55V gap between standoff and breakdown means the rail sees no leakage at nominal voltage, and the clamping ceiling stays below the typical 28V absolute-max of common 15V-rated ASICs. Bidirectional construction (single channel) eliminates polarity marking on the PCB — the device clamps equally in both directions, which simplifies layout for AC-coupled or floating signal lines. ## Active production — no end-of-life watch needed Microchip lists the 1N6112US as Active. The SQ-MELF package is a hermetic ceramic construction, not a plastic-molded body. This means the part has no moisture sensitivity level (MSL) rating — no bake-out required before reflow, and no floor-life clock to track. ## Package and footprint — SQ-MELF B The 1N6112US comes in the SQ-MELF B (also called B, SQ-MELF) package — a hermetic surface-mount ceramic barrel with solderable end caps. The footprint is the same as the industry-standard DO-213AB (MELF) outline; the PCB land pattern matches the standard MELF footprint for a 2-terminal axial-style body. The supplier device package is listed as B, SQ-MELF. The package is — not tape-and-reel — so plan for manual or tube-fed placement. Confirm the pick-and-place feeder compatibility if using automated assembly.","metaTitle":"1N6112US Zener TVS Diode – 500W, Bidirectional, SQ-MELF","metaDescription":"1N6112US Zener TVS diode, 500W peak pulse, 13.7V standoff, bidirectional, SQ-MELF surface mount. Active production – source via RFQ.","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":"1N6112","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)":"16.25V","Voltage - Clamping (Max) @ Ipp":"26.36V","Voltage - Reverse Standoff (Typ)":"13.7V","Current - Peak Pulse (10/1000µs)":"18.91A"}},"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":"Is the 1N6112US a bidirectional Zener?","answer":"Yes. It is a single bidirectional channel, meaning it clamps transients of either polarity. No cathode stripe — orientation on the board does not matter."},{"question":"Can the 1N6112US be used for overvoltage protection on a 12V rail?","answer":"Yes. The 13.7V reverse standoff sits above a 12V nominal rail, so the diode does not conduct during normal operation. The 16.25V minimum breakdown triggers before the rail exceeds typical 15V–16V absolute-max ratings, and the 26.36V clamping limits the transient peak."},{"question":"What is the peak power rating of the 1N6112US?","answer":"500W peak pulse power, tested with a 10/1000 µs waveform. This is the standard TVS power rating for medium-energy transients — adequate for secondary protection on power inputs and signal lines in industrial and avionics systems."},{"question":"Are 1N6112US and 1N6112 the same?","answer":"The base product number is 1N6112. The 'US' suffix typically indicates the surface-mount SQ-MELF package variant versus the through-hole axial-lead version. The die and electrical specs are the same; the package is the difference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6112US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6112US 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}}