{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6347US/TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6347US-TR","canonicalUrl":"https://icboms.com/microchip/1N6347US-TR","factsUrl":"https://icboms.com/api/mcp/products/1N6347US%2FTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology Zener Diode, 1N6347US/TR, 91 V, 500 mW, ±5% Tolerance, SQ-MELF B Package, Surface Mount, Tape & Reel.","salesMarkdown":"## 91 V zener with 500 mW dissipation — the parametric fit Rated 91 V nominal at 500 mW maximum power dissipation, the 1N6347US/TR serves as a voltage reference or clamping element in circuits that need a stable 91 V rail. The ±5% tolerance means the actual zener voltage falls between 86.45 V and 95.55 V at the test current — a standard precision band for general-purpose regulation or overvoltage protection. The -65°C to 175°C junction temperature range covers military and industrial thermal extremes — avionics, downhole tools, or engine-bay electronics where the ambient exceeds 125°C. Reverse leakage is specified at 50 nA maximum when 69 V is applied across the junction, confirming the diode holds off well below the breakdown knee. ## SQ-MELF B package — board-fit and handling Supplied in the SQ-MELF B (surface-mount MELF) package, the 1N6347US/TR is a cylindrical, end-capped component designed for automated pick-and-place. The B variant is the standard SQ-MELF outline — the cylindrical body rolls during reflow if the solder paste footprint is not matched to the recommended land pattern, so the PCB layout should follow Microchip's application note for MELF termination geometry.","metaTitle":"Microchip 1N6347US/TR Zener Diode, 91 V, 500 mW, SQ-MELF","metaDescription":"Microchip Technology 1N6347US/TR zener diode, 91 V nominal, 500 mW, ±5% tolerance, SQ-MELF B package, -65°C to 175°C. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Tolerance":"±5%","Power - Max":"500 mW","Mounting Type":"Surface Mount","Package / Case":"SQ-MELF, B","Product Status":"Active","lifecycle_stage":"eol_hot","Impedance (Max) (Zzt)":"270 Ohms","Operating Temperature":"-65°C ~ 175°C (TJ)","Supplier Device Package":"B, SQ-MELF","Voltage - Zener (Nom) (Vz)":"91 V","Current - Reverse Leakage @ Vr":"50 nA @ 69 V","Voltage - Forward (Vf) (Max) @ If":"1.4 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.8000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/853c43a3acdc2333f4e62a06f37c38df.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6347US%2FTR/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum impedance (Zzt) of the 1N6347US/TR?","answer":"The maximum zener impedance is 270 Ohms at the test current. This value affects the voltage regulation accuracy — a lower impedance provides tighter regulation as the current varies through the zener region."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6347US-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6347US-TR 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}}