{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6281A","brand":"onsemi","brandSlug":"onsemi","productSlug":"1N6281A","canonicalUrl":"https://icboms.com/onsemi/1N6281A","factsUrl":"https://icboms.com/api/mcp/products/1N6281A","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ series, 1N6281A Zener TVS diode, 1500W peak pulse power, 23.1V reverse standoff, DO-201AD axial package, through-hole mount.","salesMarkdown":"## Transient protection for 24V rails – 1500W peak pulse power The 1N6281A is a Zener TVS diode from the onsemi Mosorb™ series, rated for 1500W peak pulse power. That 1500W rating is the energy-handling ceiling for an 8/20 µs surge waveform – enough to clamp transients on a 24V DC bus without exceeding the 37.5V clamping voltage. It protects a single unidirectional line, with a reverse standoff voltage of 23.1V and a minimum breakdown of 25.7V. The 23.1V standoff sits comfortably below a 24V nominal rail, so the diode stays off during normal operation and only conducts when a surge pushes the line above the breakdown threshold. onsemi lists the 1N6281A as Obsolete. The operating temperature range of -65°C to 175°C is wide enough for military, avionics, or downhole applications – but the obsolete status means any design still using this part should have a qualification plan for an alternative before the available inventory dries up. No power line protection feature – this is a standard Zener TVS, not a crowbar or a filtered suppressor. The application is general-purpose transient clamping on signal or low-power DC lines. ## Package and mounting – DO-201AD axial checklist The DO-201AD axial package is a through-hole, leaded form factor. The body diameter and lead spacing are standard for this JEDEC outline – the hole diameter on the PCB should match the lead diameter from the datasheet drawing to avoid solder-joint cracking under thermal cycling. Hand-solder or wave-solder only.","metaTitle":"1N6281A Zener TVS Diode – 1500W, 23.1V Standoff, DO-201AD","metaDescription":"1N6281A from onsemi Mosorb™ series: Zener TVS, 1500W peak pulse power, 23.1V reverse standoff, DO-201AD axial. Obsolete – sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"Mosorb™","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6281","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"25.7V","Voltage - Clamping (Max) @ Ipp":"37.5V","Voltage - Reverse Standoff (Typ)":"23.1V","Current - Peak Pulse (10/1000µs)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1ce676890a04bce4da4e0ab60f37b157.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the 1N6281A or check availability?","answer":"We source it through our independent supply network – submit an RFQ with your target quantity and we will confirm availability and current pricing at quote time. No stock-holding claim is made here."},{"question":"What is the replacement for the 1N6281A?","answer":"onsemi has not published an official successor for the 1N6281A. For a 23.1V standoff, 1500W Zener TVS in a DO-201AD package, common cross-shopped alternatives include the 1.5KE24A series from various manufacturers – but verify the breakdown voltage window and clamping spec against your surge requirement before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1N6281A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1N6281A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:22:06.860Z","lastPublished":"2026-07-17T20:22:06.860Z","indexable":true}}