{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6313US/TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6313US-TR","canonicalUrl":"https://icboms.com/microchip/1N6313US-TR","factsUrl":"https://icboms.com/api/mcp/products/1N6313US%2FTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6313US/TR Zener diode, 3.6 V nominal, ±5% tolerance, 500 mW, SQ-MELF B package, surface mount.","salesMarkdown":"## 3.6 V shunt regulation in a hermetic MELF The 1N6313US/TR is a 3.6 V Zener diode from Microchip Technology, rated for 500 mW continuous power dissipation in the SQ-MELF B package. The ±5% tolerance on the nominal voltage is standard for general-purpose shunt regulation — enough to clamp a 3.3 V rail or provide a reference for a comparator threshold without tight post-trim. Maximum impedance is 25 Ohms (Zzt), which governs how much the regulation voltage shifts with current through the device. At 3.6 V and 500 mW, the maximum steady-state current is about 139 mA — the impedance contributes roughly 3.5 mV of regulation drop per mA of load change. ## Temperature range and package choice The SQ-MELF B package is a hermetic surface-mount ceramic body with metallized end caps — it handles thermal cycling and moisture ingress better than plastic SMD packages, making it a fit for avionics, downhole instrumentation, or sealed modules where reliability under temperature stress is critical. Surface-mount assembly with tape-and-reel packaging (Cut Tape also available) — the SQ-MELF footprint is non-standard compared to SOD-123 or SOT-23; confirm the pad geometry against the package drawing before committing the PCB layout.","metaTitle":"1N6313US/TR Zener Diode, 3.6 V, 500 mW, SQ-MELF","metaDescription":"Microchip Technology 1N6313US/TR Zener diode, 3.6 V nominal, ±5% tolerance, 500 mW, SQ-MELF B package, -65°C to 175°C. Active lifecycle, 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)":"25 Ohms","Operating Temperature":"-65°C ~ 175°C (TJ)","Supplier Device Package":"B, SQ-MELF","Voltage - Zener (Nom) (Vz)":"3.6 V","Current - Reverse Leakage @ Vr":"3 µA @ 1 V","Voltage - Forward (Vf) (Max) @ If":"1.4 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.8000","priceTiers":[{"qty":1,"price":"$13.80000","currency":"USD"},{"qty":100,"price":"$12.82010","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/853c43a3acdc2333f4e62a06f37c38df.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6313US%2FTR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 1N6313US/TR?","answer":"The 1N747AUR-1/TR is also a 3.6 V Zener in a surface-mount package, but its power rating is 400 mW versus 500 mW, and the SQ-MELF B package of the 1N6313US/TR is hermetic — the 1N747AUR-1/TR uses a different package variant. Verify the pad footprint and derating before substituting."},{"question":"What temperature range does the 1N6313US/TR support?","answer":"The junction operating range is -65°C to 175°C, which covers military-grade and industrial thermal requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6313US-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6313US-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}}