{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6109A","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6109A","canonicalUrl":"https://icboms.com/microchip/1N6109A","factsUrl":"https://icboms.com/api/mcp/products/1N6109A","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6109A, Zener TVS diode, 500 W peak pulse power, 9.9 V reverse standoff, 18.2 V clamping, bidirectional, B Axial package, -55°C to 175°C junction range.","salesMarkdown":"## 500 W bidirectional Zener TVS for harsh environments The 1N6109A is a 500 W peak-pulse-power Zener TVS diode from Microchip Technology, designed for general-purpose transient suppression on symmetrical rails or signal pairs. Its 9.9 V reverse standoff voltage and 18.2 V clamping ceiling define the protection window — the rail must stay below 9.9 V nominal, and the clamped spike must not exceed the downstream device's absolute maximum rating. A single bidirectional channel means the part clamps both polarities with one device, saving board space on AC-coupled or differential lines. The minimum breakdown voltage is 12.35 V, giving a 2.45 V margin above standoff before conduction starts — tight enough for a 9 V rail but not for a 12 V rail. ## Parametric stack: standoff, breakdown, clamping Three voltages define the protection corridor: reverse standoff (9.9 V typ), minimum breakdown (12.35 V), and maximum clamping at rated current (18.2 V at 27.5 A, 10/1000 µs pulse). The 5.85 V gap between standoff and clamping is the energy the TVS absorbs — wider than a low-voltage rail clamp, which means more peak current handling for a given power rating. The 500 W peak pulse power is measured with a 10/1000 µs waveform — the standard telecom surge shape. For shorter pulses (8/20 µs) the part can handle significantly higher peak current, but the datasheet's 27.5 A rating at 10/1000 µs is the conservative number for cross-pulse-width comparison. ## Active production — no obsolescence concern The junction temperature range spans -55°C to 175°C, covering military, avionics, and downhole applications where the ambient exceeds the standard 85°C or 125°C commercial/industrial limits. The axial through-hole package (B, Axial) is straightforward to hand-solder or wave-solder, and its thermal path relies on the lead length and PCB copper — no heatsink needed for single-pulse events.","metaTitle":"1N6109A Zener TVS Diode – 500W, 9.9V Standoff, Axial","metaDescription":"1N6109A Zener TVS diode from Microchip Technology. 500W peak pulse power, 9.9V reverse standoff, 18.2V clamping. Bidirectional, axial 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":"Through Hole","Package / Case":"B, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"1N6109","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Voltage - Breakdown (Min)":"12.35V","Voltage - Clamping (Max) @ Ipp":"18.2V","Voltage - Reverse Standoff (Typ)":"9.9V","Current - Peak Pulse (10/1000µs)":"27.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.6600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c72f565c96d1fb1ddee384734173c93c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power of the 1N6109A?","answer":"The 1N6109A is rated for 500 W peak pulse power, measured with a 10/1000 µs exponential waveform. At that pulse condition the peak current is 27.5 A. For shorter pulses the peak current capability is higher, but the 500 W figure is the standard cross-reference rating for comparison with other TVS diodes."},{"question":"Is the 1N6109A bidirectional?","answer":"Yes — the 1N6109A has a single bidirectional channel. It clamps both positive and negative transients symmetrically, making it suitable for AC signal lines, differential pairs, or any application where the protected line swings above and below ground."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6109A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6109A 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}}