{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6488","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6488","canonicalUrl":"https://icboms.com/microchip/1N6488","factsUrl":"https://icboms.com/api/mcp/products/1N6488","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6488 Zener diode, 4.3 V nominal, 1.5 W, ±5% tolerance, DO-204AL (DO-41) axial package, Bulk.","salesMarkdown":"## 4.3 V Zener — regulation and clamping in extreme thermal environments The 1N6488 is a 4.3 V Zener diode rated for 1.5 W continuous power dissipation in the DO-204AL (DO-41) axial-lead package. The ±5% tolerance on the nominal voltage means the actual breakdown sits between 4.085 V and 4.515 V at the specified test current — tight enough for a basic shunt regulator or input-clamp rail but not a precision band-gap reference. Its 9 Ohms maximum Zener impedance (Zzt) at the operating point means the regulation voltage shifts about 9 mV per mA of load current change. For a 10 mA shunt current, the output moves less than 90 mV — acceptable for a 5 V logic supply clamp or an over-voltage crowbar trigger. At 175°C junction, the 1.5 W rating must be derated per the thermal resistance of the lead length and board copper — a free-air axial lead in still air dissipates roughly 1 W before the junction hits 175°C at 25°C ambient. ## Reverse leakage and forward drop — signal-chain boundaries Reverse leakage is 5 µA maximum at 1 V reverse bias — well below the 1 V knee, so a 4.3 V rail clamped by this diode sees under 5 µA of leakage until the rail approaches 4.3 V. Forward voltage is 1.5 V maximum at 1 A forward current, characteristic of a silicon Zener operating as a rectifier in the forward quadrant.","metaTitle":"1N6488 Zener Diode, 4.3 V, 1.5 W, DO-41, Microchip","metaDescription":"Microchip 1N6488 Zener diode, 4.3 V nominal, 1.5 W, ±5% tolerance, DO-204AL (DO-41) axial package, -65°C to 175°C. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Series":"-","Packaging":"Bulk","Tolerance":"±5%","Part Status":"Active","Power - Max":"1.5 W","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","lifecycle_stage":"eol_hot","Base Product Number":"1N6488","Impedance (Max) (Zzt)":"9 Ohms","Operating Temperature":"-65°C ~ 175°C (TJ)","Supplier Device Package":"DO-204AL (DO-41)","Voltage - Zener (Nom) (Vz)":"4.3 V","Current - Reverse Leakage @ Vr":"5 µA @ 1 V","Voltage - Forward (Vf) (Max) @ If":"1.5 V @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.5850","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f3cd60496699e30d122df38b72a03301.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6488/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6488","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6488 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}}