{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6021B","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6021B","canonicalUrl":"https://icboms.com/microchip/1N6021B","factsUrl":"https://icboms.com/api/mcp/products/1N6021B","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6021B Zener diode, 75 V nominal, ±5% tolerance, 500 mW max, DO-204AH (DO-35) axial-lead package, Bulk.","salesMarkdown":"## 75 V zener — bias rail or clamp protection The 1N6021B is a 75 V zener diode in a DO-35 glass axial-lead package, rated for 500 mW continuous power dissipation. The 75 V nominal breakdown makes it a fit for regulating a high-voltage bias rail — say a 48 V telecom bus stepped up — or for clamping overvoltage transients on a 60 Vdc supply line where the zener conducts at the threshold and shunts the spike to ground. ## Parametric fit — tolerance, leakage, impedance Tolerance is ±5%, so the actual zener voltage for any given unit lands between 71.25 V and 78.75 V. That spread is tight enough to set a consistent clamp threshold across a production run, though a precision reference circuit would call for a ±2% or ±1% grade. Dynamic impedance (Zzt) is 265 Ohms at the zener test current. This is the incremental resistance in the breakdown region; a 265 Ω Zzt means the regulation slope is steeper than a low-voltage zener — a 1 mA change in current shifts the zener voltage by roughly 265 mV. For a bias rail that must stay within a few percent, the series resistor and load variation need to hold the operating current steady. ## Temperature range and package — harsh-environment ready Operating junction temperature spans -65°C to 175°C, which is the full military-grade range. A zener in an engine-bay ECU or a downhole sensor module that sees 150°C ambient still has junction margin. The DO-35 glass body is hermetically sealed — no moisture ingress, no parametric drift from humidity — and the axial leads suit through-hole assembly on a wave-solder line or hand-solder rework.","metaTitle":"Microchip 1N6021B Zener Diode, 75 V, 500 mW, DO-35","metaDescription":"1N6021B Zener diode from Microchip Technology, 75 V nominal, ±5% tolerance, 500 mW max, DO-35 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":"Bulk","Tolerance":"±5%","Power - Max":"500 mW","Mounting Type":"Through Hole","Package / Case":"DO-204AH, DO-35, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N6021","Impedance (Max) (Zzt)":"265 Ohms","Operating Temperature":"-65°C~175°C","Supplier Device Package":"DO-35","Voltage - Zener (Nom) (Vz)":"75 V","Current - Reverse Leakage @ Vr":"100 nA @ 56 V","Voltage - Forward (Vf) (Max) @ If":"1.1 V @ 200 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9950","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/87171d2e12030478252c3bb19e7c6e91.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6021B/alternatives.json"},"ai":{"faq":[{"question":"What is the 1N6021B's power rating and package?","answer":"Maximum power dissipation is 500 mW. The package is a DO-204AH (DO-35) axial-lead glass body, supplied in Bulk. The junction operates from -65°C to 175°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6021B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6021B 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}}