{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6326US/TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6326US-TR","canonicalUrl":"https://icboms.com/microchip/1N6326US-TR","factsUrl":"https://icboms.com/api/mcp/products/1N6326US%2FTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6326US/TR Zener Diode, 12 V nominal, 500 mW, ±5% tolerance, 7 Ohms impedance, SQ-MELF B package, Tape & Reel.","salesMarkdown":"## 12 V Zener — regulation and clamping in a SQ-MELF package The 1N6326US/TR: This is a 12 V Zener diode rated for 500 mW continuous power dissipation in a surface-mount SQ-MELF B package. The ±5% tolerance on the nominal Zener voltage means the actual breakdown voltage for any given unit falls between 11.4 V and 12.6 V — tight enough for most voltage-reference and clamping duties in low-power analog and digital circuits. Maximum impedance (Zzt) is 7 Ohms at the test current. Lower impedance means the Zener holds its voltage more tightly as the current through it varies — useful when the diode is used as a shunt regulator feeding a small load that draws a few milliamps. ## Temperature range and reverse leakage Reverse leakage is specified at 1 µA maximum at 9 V reverse bias — well below the Zener knee, so the diode does not load the circuit appreciably until the applied voltage approaches the breakdown region. Forward voltage is 1.4 V maximum at 1 A forward current. This matters if the diode is used in a bidirectional clamp or as a rectifier in a low-voltage rail — the forward drop at high current is higher than a Schottky but typical for a Zener junction. ## SQ-MELF B — board-fit and assembly The SQ-MELF B (Surface Mount Qualified Metal Electrode Face) package is a hermetic, solderable ceramic body with metal end caps. It handles the full -65°C to +175°C temperature range without die-attach fatigue, and the end-cap termination is compatible with standard reflow profiles. The Tape & Reel delivery supports automated pick-and-place assembly.","metaTitle":"Microchip 1N6326US/TR Zener Diode, 12 V, 500 mW, SQ-MELF","metaDescription":"Active-production 12 V Zener diode in SQ-MELF B package. 500 mW power dissipation, ±5% tolerance, 7 Ohm impedance. Sourced to order against RFQ.","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)","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)":"7 Ohms","Operating Temperature":"-65°C ~ 175°C (TJ)","Supplier Device Package":"B, SQ-MELF","Voltage - Zener (Nom) (Vz)":"12 V","Current - Reverse Leakage @ Vr":"1 µA @ 9 V","Voltage - Forward (Vf) (Max) @ If":"1.4 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.8400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/950a1a5ef1d17a0e9b75efb616fa4721.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6326US%2FTR/alternatives.json"},"ai":{"faq":[{"question":"What is 1N6326US/TR's listed tolerance and what does it mean for my circuit?","answer":"The tolerance is ±5% on the nominal 12 V Zener voltage. This means the actual breakdown voltage for any individual unit will fall between 11.4 V and 12.6 V — adequate for general-purpose clamping and reference duties, though a tighter-tolerance Zener (e.g., ±2% or ±1%) would be needed for precision voltage-reference applications."},{"question":"What package is the 1N6326US/TR supplied in?","answer":"The device comes in a SQ-MELF B package (Surface Mount Qualified Metal Electrode Face), supplied on Tape & Reel for automated assembly. The hermetic ceramic body with metal end caps is rated for the full -65°C to +175°C operating range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6326US-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6326US-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}}