{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4734CPE3/TR12","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4734CPE3-TR12","canonicalUrl":"https://icboms.com/microchip/1N4734CPE3-TR12","factsUrl":"https://icboms.com/api/mcp/products/1N4734CPE3%2FTR12","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4734CPE3/TR12 zener diode, 5.6 V nominal, 1 W power dissipation, ±2% tolerance, DO-204AL (DO-41) axial package, Tape & Reel.","salesMarkdown":"## 5.6 V zener with tight regulation window The 1N4734CPE3/TR12 is a 5.6 V zener diode from Microchip Technology's standard reference family, rated for 1 W continuous power dissipation in the DO-204AL (DO-41) axial-lead package. The ±2% tolerance on the nominal voltage gives a regulation window of roughly 5.49 V to 5.71 V, tighter than the common 5% grade — useful when the downstream circuit needs a stable reference or clamp threshold without trimming. ## Thermal and impedance profile Maximum impedance (Zzt) is 5 Ohms at the zener knee — this is the dynamic resistance the diode presents when conducting at its test current. A lower impedance means the voltage stays flatter across the operating current range, which matters when the zener serves as a shunt regulator or voltage reference in a bias supply. The 1 W power limit in the DO-41 body means the junction-to-ambient thermal path through the axial leads and PCB copper sets the real-world derating — at 25°C ambient the full watt is available, but above that the allowable dissipation drops linearly per the datasheet derating curve. Reverse leakage is specified at 10 µA maximum when 2 V is applied across the junction — this is well below the zener voltage, so the diode is in the off-state. The low leakage keeps standby current negligible in battery-powered circuits where the zener sits across a rail as overvoltage protection. Forward voltage drop is 1.2 V maximum at 200 mA forward current — a standard silicon junction characteristic. If the part is used in a bidirectional clamp or as a general-purpose rectifier in a pinch, the forward conduction loss at 200 mA is about 240 mW. The DO-204AL (DO-41) axial package is a through-hole format with 0.025-inch diameter leads on 0.300-inch nominal lead spacing. It inserts into standard 0.040-inch PCB holes and is wave-solder compatible. The Tape & Reel (TR) packaging option feeds into automatic insertion equipment for volume assembly.","metaTitle":"Microchip 1N4734CPE3/TR12 Zener Diode, 5.6 V, 1 W, DO-41","metaDescription":"Microchip Technology 1N4734CPE3/TR12 zener diode, 5.6 V nominal at 1 W with ±2% tolerance. 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":"1N4734","Impedance (Max) (Zzt)":"5 Ohms","Operating Temperature":"-65°C~150°C","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"5.6 V","Current - Reverse Leakage @ Vr":"10 µA @ 2 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 1N4734CPE3/TR12's listed tolerance?","answer":"The tolerance is ±2% on the 5.6 V nominal zener voltage. This gives a regulation window of approximately 5.49 V to 5.71 V, tighter than the standard 5% grade commonly used in general-purpose clamping circuits."},{"question":"What package does 1N4734CPE3/TR12 come in?","answer":"The package is DO-204AL (DO-41), an axial-lead through-hole format. The Tape & Reel (TR) variant is suitable for automated insertion equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4734CPE3-TR12","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4734CPE3-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}}