{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6636","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6636","canonicalUrl":"https://icboms.com/microchip/1N6636","factsUrl":"https://icboms.com/api/mcp/products/1N6636","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6636 zener diode, 4.7 V nominal, 5 W, ±5% tolerance, E axial through-hole package, -65 to 175 °C.","salesMarkdown":"## 4.7 V zener at 5 W — the junction temp tells the story The Microchip Technology 1N6636 is a 4.7 V zener diode rated for 5 W continuous power dissipation in the E axial through-hole package. That 5 W rating is only valid if you keep the lead temperature below the 175 °C absolute maximum junction temperature — in free air at 25 °C ambient, derate it aggressively. The -65 to 175 °C operating range puts it in the military-grade temperature band, so it handles the thermal cycling you see in avionics or downhole gear. ## Regulation tolerance and leakage Zener voltage tolerance is ±5 %, so a 4.7 V part regulates between roughly 4.465 V and 4.935 V at the test current. The 450 Ohm maximum dynamic impedance (Zzt) at the zener test point means regulation stiffens up as current increases — don't run it near the knee if you need a stable reference. Reverse leakage is 20 µA at 1 V, which is low enough for most bias and clamp circuits. ## Forward drop and surge handling Maximum forward voltage is 1.5 V at 1 A. That number matters if you use the diode in a bidirectional clamp or as a rectifier — the 5 W rating applies in the zener region, not forward conduction, so don't count on the full 5 W dissipation in forward bias.","metaTitle":"Microchip 1N6636 Zener Diode, 4.7 V, 5 W, E Axial","metaDescription":"Microchip 1N6636 zener diode, 4.7 V nominal at 5 W, ±5% tolerance, E axial package, -65 to 175 °C. Active production, 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":"Bulk","Tolerance":"±5%","Power - Max":"5 W","Mounting Type":"Through Hole","Package / Case":"E, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N6636","Impedance (Max) (Zzt)":"450 Ohms","Operating Temperature":"-65°C~175°C","Supplier Device Package":"E, Axial","Voltage - Zener (Nom) (Vz)":"4.7 V","Current - Reverse Leakage @ Vr":"20 µA @ 1 V","Voltage - Forward (Vf) (Max) @ If":"1.5 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.9550","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/257bf2c46a972c170b85114a822a9b6a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6636/alternatives.json"},"ai":{"faq":[{"question":"What package does the 1N6636 come in?","answer":"The 1N6636 is supplied in the E axial through-hole package (also called the DO-41 or similar axial-lead glass body). The supplier device package is listed as E, Axial. It ships in Bulk packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6636","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6636 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}}