2SD1949 / 2SD1484K Datasheet Middle Power Transistor (50V, 500mA) llOutline Parameter Value SOT-323 SOT-346 V 50V CEO I 500mA C 2SD1949 2SD1484K (UMT3) (SMT3) llFeatures llInner circuit 1)High current. (I =0.5A) C 2)Low V CE(sat) V 400mV CE(sat) at I =150mA/I =15mA C B llApplication LOW FREQUENCY AMPLIFIER, DRIVER llPackaging specifications Basic Package Taping Reel size Tape width hFE Part No. Package ordering Marking size code (mm) (mm) rank unit.(pcs) SOT-323 2SD1949 2021 T106 180 8 3000 QR Y (UMT3) SOT-346 2SD1484K 2928 T146 180 8 3000 QR Y (SMT3) www.rohm.com 1/7 20160824 - Rev.002 2016 ROHM Co., Ltd. All rights reserved. 2SD1949 / 2SD1484K Datasheet llAbsolute maximum ratings (T = 25C) a Parameter Symbol Values Unit V Collector-base voltage 50 V CBO V Collector-emitter voltage 50 V CEO V Emitter-base voltage 5 V EBO I Collector current 500 mA C *1 P Power dissipation 200 mW D T Junction temperature 150 j Range of storage temperature T -55 to +150 stg llElectrical characteristics (T = 25C) a Values Parameter Symbol Conditions Unit Min. Typ. Max. Collector-base breakdown BV I = 100A 50 - - V CBO C voltage Collector-emitter breakdown BV I = 1mA 50 - - V CEO C voltage BV I = 100A Emitter-base breakdown voltage 5 - - V EBO E I Collector cut-off current V = 30V - - 500 nA CBO CB I Emitter cut-off current V = 4V - - 500 nA EBO EB Collector-emitter saturation voltage V I = 150mA, I = 15mA - - 400 mV CE(sat) C B h V = 3V, I = 10mA DC current gain 120 - 390 - FE CE C V = 5V, I = -20mA, CE E f Transition frequency - 250 - MHz T f = 100MHz V = 10V, I = 0A, CB E C Output capacitance - 6.5 - pF ob f = 1MHz hFE values are calssified as follows : rank Q R - - - h 120-270 180-390 - - - FE *1 Each terminal mounted on a reference land. www.rohm.com 2/7 20160824 - Rev.002 2016 ROHM Co., Ltd. All rights reserved.