{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4737APE3/TR8","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4737APE3-TR8","canonicalUrl":"https://icboms.com/microchip/1N4737APE3-TR8","factsUrl":"https://icboms.com/api/mcp/products/1N4737APE3%2FTR8","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4737APE3/TR8 zener diode, 7.5 V nominal, ±5% tolerance, 1 W power dissipation, DO-204AL (DO-41) axial-lead package, Tape & Reel.","salesMarkdown":"## 7.5 V shunt regulation in a DO-41 axial package The 1N4737APE3/TR8 is a 7.5 V zener diode from Microchip Technology's 1N4737 family, rated for 1 W continuous power dissipation in the standard DO-204AL (DO-41) axial-lead package. The 7.5 V nominal breakdown with ±5% tolerance means the actual zener voltage falls between 7.125 V and 7.875 V — tight enough for most shunt regulator and voltage reference applications where a precision reference is not required. With a maximum impedance of 4 Ohms at the zener point (Zzt), the diode maintains regulation within a few hundred millivolts as the load current varies — a 10 mA change in zener current shifts the voltage by roughly 40 mV. The 1 W power ceiling in the DO-41 body limits the steady-state zener current to about 133 mA at 7.5 V, though derating is required above 25°C ambient. ## Temperature range and reverse leakage Reverse leakage is specified at 10 µA maximum with 5 V reverse bias — a useful check for low-power standby circuits where the zener sits across a rail and must not drain the supply when the rail is below the breakdown voltage. Forward voltage at 200 mA is 1.2 V maximum — this matters if the diode is used in a bidirectional clamp configuration where forward conduction occurs during transient events. The tape-and-reel packaging (TR suffix) feeds directly into axial-lead insertion machines, making it suitable for high-volume through-hole assembly lines.","metaTitle":"Microchip 1N4737APE3/TR8 Zener Diode, 7.5 V, 1 W, DO-41","metaDescription":"Microchip 1N4737APE3/TR8 zener diode, 7.5 V nominal, ±5% tolerance, 1 W power dissipation, DO-204AL (DO-41) axial package on tape and reel.","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":"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":"$0.9150","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f2579cdb7aec091d0b5f99df5459e04c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the tolerance and power rating of the 1N4737APE3/TR8?","answer":"The zener voltage tolerance is ±5%, and the maximum continuous power dissipation is 1 W."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4737APE3-TR8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4737APE3-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}}