{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4742APE3/TR12","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4742APE3-TR12","canonicalUrl":"https://icboms.com/microchip/1N4742APE3-TR12","factsUrl":"https://icboms.com/api/mcp/products/1N4742APE3%2FTR12","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4742APE3/TR12 zener diode, 12 V nominal, ±5% tolerance, 1 W power, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"The 1N4742APE3/TR12 is a 12 V zener diode from Microchip Technology, rated for 1 W continuous power dissipation in a DO-204AL (DO-41) axial-lead package. The 12 V nominal zener voltage with ±5% tolerance means the regulation knee sits between 11.4 V and 12.6 V — tight enough for most low-power shunt regulator or overvoltage clamp applications. The 1 W power rating sets the maximum steady-state current the diode can handle: at 12 V, that is roughly 83 mA before the junction exceeds its thermal limit. The wide operating temperature range of -65°C to +150°C makes it suitable for industrial or automotive environments where the ambient temperature swings well beyond the commercial range. ## Package and board-fit — DO-41 axial leads on tape and reel The DO-204AL (DO-41) package is a standard through-hole axial-lead format. The leads are 0.025-inch diameter tin-plated copper, spaced 0.300-inch apart when formed for PCB insertion — a common footprint shared with 1N400x rectifiers and other DO-41 diodes. The Tape & Reel (TR) packaging is intended for automated insertion equipment; the reel quantity is set by the manufacturer and confirmed at order. The maximum forward voltage is 1.2 V at 200 mA — this is the drop when the diode is forward-biased, not the zener regulation mode.","metaTitle":"Microchip 1N4742APE3/TR12 Zener Diode, 12 V, 1 W, DO-41","metaDescription":"Microchip Technology 1N4742APE3/TR12 zener diode, 12 V nominal, ±5% tolerance, 1 W power rating. DO-204AL (DO-41) axial package.","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":"1 W","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N4742","Impedance (Max) (Zzt)":"9 Ohms","Operating Temperature":"-65°C~150°C","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"12 V","Current - Reverse Leakage @ Vr":"5 µA @ 9.1 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1N4742APE3/TR12 come in?","answer":"It is supplied in a DO-204AL (DO-41) axial-lead through-hole package, on Tape & Reel for automated assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4742APE3-TR12","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4742APE3-TR12 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}}