{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6155AUS","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6155AUS","canonicalUrl":"https://icboms.com/microchip/1N6155AUS","factsUrl":"https://icboms.com/api/mcp/products/1N6155AUS","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6155AUS, Zener TVS diode, 1500W peak pulse power, 27.4V reverse standoff, 34.2V breakdown min, bidirectional, SQ-MELF, C package, active production.","salesMarkdown":"The 1N6155AUS is a bidirectional Zener TVS diode rated for 1500W peak pulse power at 10/1000µs — that 1.5 kW pulse rating tells you the die area is substantial, and the scorch mark on a failed board won't be subtle. The 27.4V reverse standoff voltage means it sits across a 24V rail and stays dark until a transient pushes past 34.2V breakdown minimum. It clamps at 49.9V maximum at the 30.1A peak pulse current, which is the number you use to size the upstream fuse or PTC so the TVS takes the hit and the rest of the board survives. The junction temperature range spans -55°C to 175°C — that's the full military-grade window, so this part is comfortable in an engine bay, a satellite power bus, or a downhole tool where the ambient hits 125°C and the die runs hotter. The SQ-MELF, C package is a hermetic surface-mount ceramic barrel — no plastic to outgas or crack under thermal shock. The gold-plated end caps solder to the board with a standard reflow profile; the thermal mass is low enough that a hot-air rework station can swap it without cooking adjacent parts. ## Active production — no end-of-life scramble The base product number is 1N6155, so the AUS suffix identifies the bidirectional, SQ-MELF variant. If your BOM calls for the unidirectional version, check the 1N6155 family table — the suffix changes, but the package and footprint stay the same.","metaTitle":"1N6155AUS Zener TVS Diode – 1500W, 27.4V Standoff, SQ-MELF","metaDescription":"1N6155AUS Zener TVS diode from Microchip Technology. 1500W peak pulse power, 27.4V reverse standoff, 34.2V breakdown min. Active production, SQ-MELF package.","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":"1N6155","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)":"34.2V","Voltage - Clamping (Max) @ Ipp":"49.9V","Voltage - Reverse Standoff (Typ)":"27.4V","Current - Peak Pulse (10/1000µs)":"30.1A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.2450","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6155AUS/alternatives.json"},"ai":{"faq":[{"question":"What is the peak pulse power of the 1N6155AUS?","answer":"The 1N6155AUS is rated for 1500W peak pulse power at a 10/1000µs waveform. That 1.5 kW rating is the energy it can absorb in a single transient without failing — useful for sizing protection on a 24V DC bus where a load-dump or inductive kick could hit that level."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6155AUS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6155AUS when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}