www.DataSheet4U.com 2SC4557 Application : Switching Regulator and General Purpose (Ta=25°C) 2SC4557 100max 100max 550min 10 to 28 0.5max 1.2max 6typ 105typ V V 16.2 Silicon NPN Triple Diffused Planar Transistor (High Voltage Switchihg Transistor) sAbsolute maximum ratings (Ta=25°C) Symbol VCBO VCEO VEBO IC IB PC Tj Tstg 2SC4557 900 550 7 10(Pulse20) 5 80(Tc=25°C) 150 55 to +150 Unit V V V A A W °C °C sElectrical Characteristics Symbol ICBO IEBO V(BR)CEO hFE VCE(sat) VBE(sat) fT COB C.