{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BUJ106A,127","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"BUJ106A127","canonicalUrl":"https://icboms.com/nxp/BUJ106A127","factsUrl":"https://icboms.com/api/mcp/products/BUJ106A%2C127","rawCanonicalId":null},"summary":{"shortDescription":"NPN power bipolar transistor, 400 V collector-emitter breakdown, 10 A continuous collector current, 80 W power dissipation, TO-220-3 through-hole package, 150°C junction temperature.","salesMarkdown":"The BUJ106A,127 is an NPN power bipolar junction transistor in a TO-220-3 through-hole package. It is rated for a 400 V collector-emitter breakdown voltage and a continuous collector current of 10 A. The maximum power dissipation is 80 W, and the operating junction temperature limit is 150°C. This part belongs to a family of high-voltage NPN bipolars designed for switching and linear applications in power supplies, lighting ballasts, and motor drives where a 400 V blocking rating is required. ## Ratings that matter for the BOM The 400 V Vceo is the headline spec — it tells you this transistor can handle rectified mains up to about 265 VAC with margin for transients. The 10 A continuous current rating is the load-handling ceiling, but the real-world limit in a switching circuit is set by the saturation voltage and thermal impedance. Vce(sat) is 1 V maximum at 1.2 A base current and 6 A collector current, which means conduction loss at 6 A is about 6 W — you need a heatsink that keeps the junction below 150°C. The DC current gain minimum is 14 at 500 mA and 5 V, so at higher currents the forced beta drops further and the base drive must deliver several hundred milliamps to keep the device saturated. ## Package and mounting The BUJ106A,127 comes in a TO-220-3 package, also referred to as TO-220AB. It is a through-hole device with the standard three-lead power-tab form factor. The metal tab is the collector, and the device is designed to be bolted to a heatsink. The shipping medium is listed as Bulk, which means it arrives in tubes or loose pieces, not tape and reel — factor that into your pick-and-place planning if you are hand-loading or using a tube feeder.","metaTitle":"BUJ106A,127 NPN Power Bipolar Transistor, 400 V, 10 A","metaDescription":"BUJ106A,127 NPN power bipolar transistor rated 400 V Vceo, 10 A Ic, 80 W in TO-220-3. Key specs and datasheet overview.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Bulk","Power - Max":"80 W","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Supplier Device Package":"TO-220AB","Vce Saturation (Max) @ Ib, Ic":"1V @ 1.2A, 6A","Current - Collector (Ic) (Max)":"10 A","Current - Collector Cutoff (Max)":"100µA","DC Current Gain (hFE) (Min) @ Ic, Vce":"14 @ 500mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"400 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","stockQuantity":0,"priceTiers":[{"qty":642,"price":"$0.47000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/50958327eea25d691b170a90c8943d87.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/BUJ106A127","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/BUJ106A127 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}