2SC5257

The 2SC5257 can applicated in VHF-UHF band low nosie amplifier applications. If you want to know more imformation about 2SC5257, please go to our website.

The features of 2SC5257 can be summarized as (1) low nosie figure: NF=1.5dB(2GHz); (2) high gain: gain=10dB(2GHz).

The absolute maximum ratings of 2SC5257 are (1)collector-base voltage VCBO: 15V; (2)collector-emitter voltage VCEO: 7V; (3)emitter-base voltage VEBO: 1.5V; (4)collector current: 40mA; (5)base current IB : 20mA; (6)collector power dissipation PC: 150 mW; (7)junction temperature Tj: 125 °C; (8)storage temperature range Tstg: -55~125°C. The electerical characteristics of 2SC5257 are (1)collector cut-off current ICBO @VCB=10V, IE=0 :1A(max); (2)emitter cut-off current IEBO @VEB=1V, IC=0 : 1A(max); (3)DC current gain (hFE) @VCE=5V, IC=20mA: 50 to 160; (4)output capacitance Cob @VCB= 5V IE=0 f=1MHz: 0.6(typ)pF; (5)reverse transfer capacitance Cre @VCB= 5V IE=0 f=1MHz: 0.45(typ) to 0.85 pF.