{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6467US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6467US","canonicalUrl":"https://icboms.com/microchip/1N6467US","factsUrl":"https://icboms.com/api/mcp/products/1N6467US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6467US, Zener diode, 500W peak pulse power, 40.3V reverse standoff, SQ-MELF surface mount, -55°C to 175°C junction temperature, Active lifecycle.","salesMarkdown":"## Zener transient suppressor – 500W, hermetic SQ-MELF It provides a single unidirectional channel with a reverse standoff voltage of 40.3V and a clamping voltage of 63.5V at the peak pulse current of 45A (8/20µs). The -55°C to 175°C junction temperature range suits it for avionics, downhole instrumentation, and other high-reliability environments where the hermetic SQ-MELF package resists moisture and thermal cycling better than plastic alternatives. The 500W peak pulse power rating (10/1000µs) defines the energy the device can absorb during a transient event. For a 40.3V standoff rail, the 63.5V clamp voltage ensures the downstream circuitry sees less than 64V during a surge — critical for protecting 48V bus or 36V nominal supply lines in military or industrial gear. The 45A peak pulse current (8/20µs waveform) is the current the part can shunt without damage. Compare this to the expected surge current from a lightning strike or inductive load dump; if the surge exceeds 45A, you need a higher-rated TVS or a parallel clamp. ## Active lifecycle – no obsolescence risk for new designs The base product number is 1N6467; the 'US' suffix denotes the SQ-MELF surface-mount package variant. The through-hole equivalent (1N6467) shares the same die but differs in package — the SQ-MELF version is preferred for automated assembly and hermetic sealing. ## SQ-MELF package – rework and assembly considerations The SQ-MELF (B, SQ-MELF) is a hermetic, surface-mount package with metallized end caps. It reflows well with standard solder profiles, but the ceramic body has higher thermal mass than a plastic SMD — preheat the board to 150°C before hot-air rework to avoid thermal shock. The package is polarity-sensitive; the cathode end is marked with a band. No power line protection is built in (Power Line Protection = No), so this part is intended for signal or low-power rail clamping, not for direct AC mains suppression.","metaTitle":"1N6467US Zener Diode – Microchip, 500W, SQ-MELF, Active","metaDescription":"1N6467US from Microchip Technology: Zener diode, 500W peak pulse power, 40.3V standoff, SQ-MELF surface mount, -55°C to 175°C. 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, B","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"1N6467","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"B, SQ-MELF","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"43.7V","Voltage - Clamping (Max) @ Ipp":"63.5V","Voltage - Reverse Standoff (Typ)":"40.3V","Current - Peak Pulse (10/1000µs)":"45A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.6800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e5a65fed8a348402165405cc04f9ecf4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between 1N6467US and 1N6467?","answer":"The 1N6467US is the surface-mount SQ-MELF variant, while the 1N6467 is the through-hole equivalent. Both share the same Zener die and electrical ratings (500W peak pulse, 40.3V standoff). The SQ-MELF package is hermetic and suited for automated assembly; the through-hole version is easier to hand-solder and replace in prototype boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6467US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6467US 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}}