{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6310US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6310US","canonicalUrl":"https://icboms.com/microchip/1N6310US","factsUrl":"https://icboms.com/api/mcp/products/1N6310US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6310US Zener diode, SQ-MELF B package, 2.7 V nominal, ±5% tolerance, 500 mW power dissipation, surface mount, -65°C to 175°C.","salesMarkdown":"The 1N6310US comes in a SQ-MELF, B package — a surface-mount glass-passivated form factor with end-cap metallization, suited for automated pick-and-place assembly on standard reflow profiles. The B suffix indicates a specific body size within the MELF family; the solderable end caps demand a uniform solder paste deposit and adequate pad geometry to avoid tombstoning during reflow. ## Key ratings and what they mean for the BOM With a nominal zener voltage of 2.7 V and a ±5% tolerance, this diode holds the regulation point within 135 mV of the target — tight enough to bias a low-voltage rail or clamp a signal line. The 500 mW power dissipation ceiling means it can handle up to roughly 185 mA of zener current before junction temperature becomes the limit; the 30-ohm impedance at the zener knee means the regulation stiffens as current increases, a common characteristic in low-voltage references. ## Temperature grade and environment Rated for continuous operation from -65°C to 175°C, the 1N6310US covers the full military temperature range. The upper limit suits high-reliability applications such as avionics, downhole instrumentation, or engine-bay electronics where ambient temperatures exceed the commercial 85°C ceiling. The SQ-MELF's glass-passivated junction is inherently moisture-resistant, though the part does not carry an explicit IP rating. ## Reverse leakage and forward characteristics Reverse leakage is specified at 60 µA maximum when 1 V is applied across the junction — a key parameter for battery-powered circuits where the leakage current directly impacts standby drain.","metaTitle":"1N6310US Zener Diode, 2.7 V, 500 mW, SQ-MELF","metaDescription":"Microchip Technology 1N6310US Zener diode, 2.7 V nominal, ±5% tolerance, 500 mW, SQ-MELF surface mount, -65°C to 175°C. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Series":"-","Package":"Bulk","Tolerance":"±5%","Power - Max":"500 mW","Mounting Type":"Surface Mount","Package / Case":"SQ-MELF, B","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N6310","Impedance (Max) (Zzt)":"30 Ohms","Operating Temperature":"-65°C ~ 175°C","Supplier Device Package":"B, SQ-MELF","Voltage - Zener (Nom) (Vz)":"2.7 V","Current - Reverse Leakage @ Vr":"60 µA @ 1 V","Voltage - Forward (Vf) (Max) @ If":"1.4 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.2901","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/950a1a5ef1d17a0e9b75efb616fa4721.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6310US/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6310US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6310US 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}}