{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4742PE3/TR8","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4742PE3-TR8","canonicalUrl":"https://icboms.com/microchip/1N4742PE3-TR8","factsUrl":"https://icboms.com/api/mcp/products/1N4742PE3%2FTR8","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4742PE3/TR8 Zener diode, 12 V nominal, 1 W, ±10% tolerance, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"The 1N4742PE3/TR8 is a 12 V Zener diode from Microchip Technology in the industry-standard DO-204AL (DO-41) axial-lead package. Its primary job is to provide a stable 12 V reference or clamp voltage in a circuit, with a power dissipation ceiling of 1 W that sets the thermal budget for the application. The ±10% tolerance on the nominal 12 V means the actual Zener voltage for any given unit falls between 10.8 V and 13.2 V at the test current. For a voltage reference circuit, this tolerance band determines the initial accuracy; for a clamping or protection application, it defines the voltage at which the diode begins to conduct. ## Thermal and leakage performance across temperature The 5 µA maximum reverse leakage at 9.1 V confirms low standby loss — important in battery-powered or energy-harvesting circuits where every microamp counts. Maximum impedance (Zzt) is 9 Ohms at the Zener test current. Lower impedance means tighter regulation as the current through the diode varies, so this figure matters when the diode must hold a stable voltage across a changing load. Supplied in Tape & Reel (TR) format, the DO-204AL (DO-41) axial-lead body is a through-hole package designed for automated insertion or hand soldering. The axial leads suit point-to-point wiring, perfboard, or PCB through-holes with a standard 0.100-inch lead spacing. ## Active lifecycle — no end-of-life concern Microchip Technology lists this part as Active in production.","metaTitle":"1N4742PE3/TR8 Zener Diode, 12 V, 1 W, DO-41, Microchip","metaDescription":"Microchip 1N4742PE3/TR8 Zener diode, 12 V nominal, 1 W, ±10% tolerance, DO-204AL (DO-41) axial package. 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":"Tape & Reel (TR)","Tolerance":"±10%","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":"$0.8850","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1N4742PE3/TR8 and check availability?","answer":"The 1N4742PE3/TR8 is an active-production part from Microchip Technology. Submit an RFQ for a firm commitment."},{"question":"What is the 1N4742PE3/TR8's nominal Zener voltage and tolerance?","answer":"The nominal Zener voltage is 12 V with a ±10% tolerance, meaning the actual voltage for any unit falls between 10.8 V and 13.2 V at the specified test current."},{"question":"What package does the 1N4742PE3/TR8 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/1N4742PE3-TR8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4742PE3-TR8 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}}