{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4737CPE3/TR8","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4737CPE3-TR8","canonicalUrl":"https://icboms.com/microchip/1N4737CPE3-TR8","factsUrl":"https://icboms.com/api/mcp/products/1N4737CPE3%2FTR8","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4737CPE3/TR8 Zener diode, 7.5 V nominal, ±2% tolerance, 1 W power, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"## 7.5 V regulation, 1 W dissipation, DO-41 axial The 1N4737CPE3/TR8 is a 7.5 V Zener diode from Microchip Technology's 1N4737 series, rated for 1 W continuous power dissipation in the standard DO-204AL (DO-41) axial-lead package. The ±2% tolerance on the nominal voltage means the actual Zener voltage at the test current falls between 7.35 V and 7.65 V — tight enough for a basic shunt regulator or voltage reference in a low-precision rail. Maximum impedance (Zzt) is 4 Ohms at the Zener test current, so the regulation slope is shallow: a 10 mA change in current shifts the output voltage by about 40 mV. Reverse leakage is specified at 10 µA maximum with 5 V reverse bias, which is the 1N4737's standard guard-band for off-state current in a 5 V logic supply clamp. The DO-204AL (DO-41) glass-passivated body is a through-hole axial package — it solders into a 0.040-inch diameter hole on a standard PCB or protoboard, and the lead bend radius should stay above 1.5 mm to avoid cracking the glass seal. The Tape & Reel (TR) suffix means these ship on a 13-inch reel with 5000 pieces per reel, which is the standard production quantity for axial-lead diodes.","metaTitle":"Microchip 1N4737CPE3/TR8 Zener Diode, 7.5 V, 1 W, DO-41","metaDescription":"Microchip Technology 1N4737CPE3/TR8 Zener diode, 7.5 V nominal, ±2% tolerance, 1 W power dissipation. 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":"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":"$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 the 1N4737CPE3/TR8?","answer":"The 1N4737CPE3/TR8 is the Tape & Reel variant of the standard 1N4737A (1 W, 7.5 V, ±5% tolerance) from Microchip. The ±2% tolerance version (CPE3 suffix) is a tighter-bin selection of the same die and package."},{"question":"What compliance documentation does Microchip provide for the 1N4737CPE3/TR8?","answer":"Microchip's standard Zener diode series is RoHS-compliant and REACH-compliant by default. The specific compliance certificate (RoHS declaration of conformity, REACH SVHC disclosure) is available from the manufacturer upon request. No UL or IEC certification is listed for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4737CPE3-TR8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4737CPE3-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}}