{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4744CPE3/TR12","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4744CPE3-TR12","canonicalUrl":"https://icboms.com/microchip/1N4744CPE3-TR12","factsUrl":"https://icboms.com/api/mcp/products/1N4744CPE3%2FTR12","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4744CPE3/TR12 Zener diode, 15 V nominal, ±2% tolerance, 1 W power dissipation, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"The 1N4744CPE3/TR12 is a 15 V Zener diode from Microchip Technology, rated for 1 W continuous power dissipation in the standard DO-204AL (DO-41) axial-lead package. The ±2% tolerance on the nominal 15 V zener voltage means the actual breakdown sits between 14.7 V and 15.3 V at the specified test current — tight enough for a 15 V rail clamp or a low-voltage reference where a standard 5% part would drift outside the design window. ## Thermal and impedance profile Maximum zener impedance is 14 Ω at the test current — this sets the dynamic resistance the regulator or clamp sees; a 10 mA load step shifts the output by 140 mV, which is predictable for a shunt reference but matters if the load is a sensitive ADC reference input. Reverse leakage is specified at 5 µA maximum at 11.4 V, well below the zener knee — a useful check for standby power budgets where the diode sits across a rail and must not drain the supply before the zener conducts. Supplied in Tape & Reel (TR) packaging, the reel quantity suits automated insertion equipment for volume builds; the axial leads are taped per EIA-296 standard for radial or axial component feeders.","metaTitle":"Microchip 1N4744CPE3/TR12 Zener Diode, 15 V, 1 W, DO-41","metaDescription":"Microchip 1N4744CPE3/TR12 Zener diode, 15 V nominal, ±2% tolerance, 1 W power dissipation, 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":"±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":"1N4744","Impedance (Max) (Zzt)":"14 Ohms","Operating Temperature":"-65°C~150°C","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"15 V","Current - Reverse Leakage @ Vr":"5 µA @ 11.4 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1N4744CPE3/TR12?","answer":"The 1N4744 series shares the same DO-41 package and 15 V nominal voltage, but the ±2% tolerance and 1 W rating are specific to this suffix variant. Confirm the BOM tolerance and power requirements before substituting a standard 1N4744."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4744CPE3-TR12","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4744CPE3-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}}