{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6465US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6465US","canonicalUrl":"https://icboms.com/microchip/1N6465US","factsUrl":"https://icboms.com/api/mcp/products/1N6465US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6465US, Zener TVS Diode, 500 W peak pulse power, 27 V min breakdown, 41.4 V clamping, unidirectional, SQ-MELF B package, -55°C to 175°C, Active.","salesMarkdown":"## 27 V breakdown, 500 W peak pulse — Zener TVS in SQ-MELF The 1N6465US is a unidirectional Zener TVS diode from Microchip Technology, rated for 500 W peak pulse power. Its minimum breakdown voltage is 27 V, clamping at 41.4 V max with a peak pulse current of 69 A under the 8/20 µs waveform. The single-channel design protects one rail against positive-going transients. The junction temperature range spans -55°C to 175°C, qualifying the part for military, avionics, and industrial environments where commercial TVS diodes would derate or fail. The SQ-MELF B package is a leadless cylindrical ceramic body — no solder tails, so the pad footprint is compact and the thermal path is through the end caps. With a clamping voltage of 41.4 V at 69 A (8/20 µs), the 1N6465US leaves a margin above the 27 V breakdown threshold. That margin is typical for a Zener TVS — the downstream circuit must tolerate the clamp voltage without latch-up or damage. The 500 W peak pulse power rating is the energy-handling ceiling; for shorter pulses the device absorbs more current before failing. Because the part is unidirectional, it only clamps one polarity. If the protected line carries a negative swing relative to ground, a bidirectional TVS or back-to-back series pair is required. No power line protection is built in — this is a signal-rail suppressor, not a mains-grade MOV replacement. ## Active production — sourcing through distribution The package is format — not tape-and-reel. For automated pick-and-place, a reel or tray variant may need to be sourced separately if the BOM calls for machine placement. Confirm the packaging code with your distributor before committing the line. ## SQ-MELF rework — what to expect at the bench The SQ-MELF B package is a surface-mount ceramic cylinder with metallised end caps — no gull-wing leads, no J-bends. Rework requires hot air; the part lifts cleanly when both end-cap solder joints are molten simultaneously. The small thermal mass means it heats quickly, but the ceramic body can crack if the temperature ramp is too aggressive. Use a preheat plate and a hot-air nozzle to avoid thermal shock. Pad layout is a simple two-terminal footprint with no centre tab. Polarity is marked by a band on the cathode end — confirm orientation before placement. The MELF body rolls during reflow if the solder paste deposit is uneven; stencil aperture design should centre the paste under each end cap.","metaTitle":"1N6465US Zener TVS Diode – 27 V Breakdown, 500 W, SQ-MELF","metaDescription":"1N6465US from Microchip Technology: Zener TVS, 27 V min breakdown, 500 W peak pulse power, 69 A (8/20 µs), unidirectional, SQ-MELF B package, -55°C to 175°C.","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","Capacitance @ Frequency":"-","Supplier Device Package":"B, SQ-MELF","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"27V","Voltage - Clamping (Max) @ Ipp":"41.4V","Voltage - Reverse Standoff (Typ)":"24V","Current - Peak Pulse (10/1000µs)":"69A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e5a65fed8a348402165405cc04f9ecf4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 1N6465US unidirectional or bidirectional?","answer":"Unidirectional — one channel. It clamps only one polarity. For bidirectional protection, use two devices back-to-back or select a bidirectional TVS."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6465US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6465US 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}}