{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4737E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4737E3-TR13","canonicalUrl":"https://icboms.com/microchip/1N4737E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/1N4737E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4737E3/TR13 Zener diode, 7.5 V nominal, 1 W power dissipation, ±10% tolerance, DO-204AL (DO-41) axial package, tape and reel.","salesMarkdown":"## 7.5 V regulation, 1 W dissipation, DO-41 axial body The 1N4737E3/TR13 is a 7.5 V Zener diode rated for 1 W continuous power dissipation in the standard DO-204AL (DO-41) axial-leaded package. The ±10% tolerance on Vz means the actual breakdown voltage falls between 6.75 V and 8.25 V — tight enough for most rail-clamp and reference applications where a precision shunt reference isn't justified. Maximum Zener impedance is 4 Ohms (Zzt at the test current), which keeps the voltage shift under load moderate for a 1 W part. Reverse leakage is specified at 10 µA max with 5 V across the junction — a useful sanity check when the diode is used as a low-leakage clamp below its breakdown knee. ## Board-fit and assembly with tape and reel The DO-41 glass body measures about 5.2 mm long by 2.7 mm diameter with 25 mm (1-inch) axial leads — a through-hole footprint that has been a staple since the early days of PCB assembly. The tape-and-reel packaging (TR suffix) feeds into automatic insertion machines or hand-stuff stations; the reel quantity is typically 5000 pieces for this body size. Forward voltage is 1.2 V max at 200 mA if the diode is accidentally forward-biased — a detail that matters when the part is used as a back-to-back clamp and the forward leg carries current. Microchip Technology lists the 1N4737E3/TR13 as Active.","metaTitle":"Microchip 1N4737E3/TR13 Zener Diode, 7.5 V, 1 W, DO-41","metaDescription":"Microchip Technology 1N4737E3/TR13 Zener diode, 7.5 V nominal, 1 W power dissipation, ±10% 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":"±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":"1N4737","Impedance (Max) (Zzt)":"4 Ohms","Operating Temperature":"-65°C~150°C","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"7.5 V","Current - Reverse Leakage @ Vr":"10 µA @ 5 V","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the tolerance on the 1N4737E3/TR13 Zener voltage?","answer":"The Zener voltage tolerance is ±10%, so a 7.5 V nominal device will break down between 6.75 V and 8.25 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4737E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4737E3-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}}