Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild_questions@onsemi.com. ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

B F 2 5 November 2014 6 B — N - C BF256B h a n N-Channel RF Amplifiers n e l R F A m Features p l i • This device is designed for VHF / UHF amplifiers f i e • Sourced from process 50 r s TO-92 1 1. Gate 2. Source 3. Drain Ordering Information Part Number Top Mark Package Packing Method BF256B BF256B TO-92 3L Bulk Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at T = 25°C unless otherwise noted. A Symbol Parameter Value Unit V Drain-Gate Voltage 30 V DG V Gate-Source Voltage -30 V GS I Forward Gate Current 10 mA GF T , T Operating and Storage Temperature Range -55 to 150 °C J STG Thermal Characteristics Values are at T = 25°C unless otherwise noted. A Symbol Parameter Value Unit Total Device Dissipation at T = 25°C 350 mW A P D Derate Above 25°C 2.8 mW/°C © 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com BF256B Rev. 1.1.0

B F Electrical Characteristics 2 5 6 Values are at TA = 25°C unless otherwise noted. B — Symbol Parameter Conditions Min. Max. Unit N V Gate-Source Breakdown Voltage V = 0, I = 1 μA -30 V (BR)GSS DS G - C VGS Gate-Source Voltage VDS = 15 V, ID = 200 μA -0.5 -7.5 V h a V (off) Gate-Source Cut-Off Voltage V = 15 V, I = 10 nA -0.5 -8.0 V n GS DS D n I Gate Reverse Current V = -20 V, V = 0 -5 nA e GSS GS DS l I Zero-Gate Voltage Drain Current V = 15 V, V = 0 6 13 mA R DSS DS GS F gfs Common Source Forward VDS = 15 V, VGS = 0, 4.5 mmhos A Transconductance f= 1 kHz m p l i f i e r s © 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com BF256B Rev. 1.1.0 2

B F Physical Dimensions 2 5 6 B — N - C h a n n e l R F A m p l i f i e r s D Figure 1. 3-Lead, TO-92, JEDEC TO-92 Compliant Straight Lead Configuration © 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com BF256B Rev. 1.1.0 3

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AccuPower(cid:165) F-PFS(cid:165) OPTOPLANAR® Awinda® FRFET® ®* AX-CAP®* Global Power ResourceSM ® TinyBoost® BitSiC(cid:165) GreenBridge(cid:165) PowerTrench® TinyBuck® Build it Now(cid:165) Green FPS(cid:165) PowerXS™ TinyCalc(cid:165) CorePLUS(cid:165) Green FPS(cid:165) e-Series(cid:165) Programmable Active Droop(cid:165) TinyLogic® CorePOWER(cid:165) Gmax(cid:165) QFET® TINYOPTO(cid:165) CROSSVOLT(cid:165) GTO(cid:165) QS(cid:165) TinyPower(cid:165) CTL(cid:165) IntelliMAX(cid:165) Quiet Series(cid:165) TinyPWM(cid:165) Current Transfer Logic(cid:165) ISOPLANAR(cid:165) RapidConfigure(cid:165) TinyWire(cid:165) DEUXPEED® Making Small Speakers Sound Louder (cid:165) TranSiC(cid:165) Dual Cool™ and Better™ TriFault Detect(cid:165) EcoSPARK® MegaBuck(cid:165) Saving our world, 1mW/W/kW at a time™ TRUECURRENT®* EfficientMax(cid:165) MICROCOUPLER(cid:165) SignalWise(cid:165) μSerDes(cid:165) ESBC(cid:165) MicroFET(cid:165) SmartMax(cid:165) ® MicroPak(cid:165) SMART START(cid:165) Fairchild® MicroPak2(cid:165) SSoPlMut®ions for Your Success(cid:165) UHC® Fairchild Semiconductor® MillerDrive(cid:165) STEALTH(cid:165) Ultra FRFET(cid:165) FFFFFAEAAasCTCStBTvTTC®e® Qnocurehie(cid:165)(cid:165)t Series(cid:165) MMMMMmTToVWotixNt®iiS®oo®nnaGMveraird®x®(cid:165) SSSSSuuuuupppppeereeerrrrSFMSSOEOOOTTTTS(cid:165)®(cid:165)(cid:165)®-3--68 XUVVVXsCioSnseli™XutFnaa(cid:165)Esg l™MTe(cid:165)Palxu(cid:165)s(cid:165) FPS(cid:165) SyncFET(cid:165) OOpPtToOHLiTO(cid:165)GIC® Sync-Lock™ (cid:3037)(cid:10106)™ * Trademarks of System General Corporation, used under license by Fairchild Semiconductor. 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