{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4742CE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4742CE3-TR13","canonicalUrl":"https://icboms.com/microchip/1N4742CE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/1N4742CE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4742CE3/TR13 zener diode, 12 V nominal, 1 W, ±2% tolerance, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"## 12 V shunt regulation with ±2% hold The 1N4742CE3/TR13 is a 12 V zener diode rated for 1 W continuous power dissipation in a DO-204AL (DO-41) axial-lead package. The ±2% tolerance on the nominal zener voltage makes it a tighter-grade part than the standard 5% 1N4742 — relevant when the shunt voltage determines the reference for a downstream regulator or comparator threshold. Maximum zener impedance is 9 Ohms (Zzt at the test current). This dynamic resistance means the regulation voltage shifts about 9 mV per mA of current change through the diode — a factor to budget in the bias resistor calculation if the load current varies. ## Temperature grade and package fit The DO-41 axial body is a standard through-hole footprint — mates with 0.100-inch pitch board holes and common clip or wave-solder assembly. Supplied in Tape & Reel (TR) format for automated insertion; not a bulk or cut-tape quantity. Reverse leakage is specified at 5 µA maximum with 9.1 V applied across the junction — a guard-band check for high-impedance bias circuits where leakage current could shift the operating point.","metaTitle":"Microchip 1N4742CE3/TR13 Zener Diode, 12 V, 1 W, ±2%, DO-41","metaDescription":"Microchip Technology 1N4742CE3/TR13 zener diode, 12 V nominal, 1 W power dissipation, ±2% tolerance, 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":"±2%","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":"$1.1250","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the 1N4742CE3/TR13's tolerance and why does it matter?","answer":"The tolerance is ±2% on the 12 V nominal zener voltage. This is tighter than the standard 5% grade of the base 1N4742, making it a better fit for voltage reference or precision shunt regulator applications where the absolute voltage matters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4742CE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4742CE3-TR13 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}}