U1Q4B42

The U1Q4B42 is a kind of rectifier stack. It is silicon diffused type. The U1Q4B42 device is intended for single phase bridge rectifier applications and for hybrid use. There are some features as follows: (1)average output rectified current: IO=1.0 A; (2)repetitive peak reverse voltage: VRRM=1200 V.

The following is about the maximum ratings of U1Q4B42: (1)repetitive peak reverse voltage, VRRM: 1200 V; (2)average output rectified current, IO: 1.0 A; (3)peak one cycle surge forward current (non-repetitive), IFSM: 20 A (50 Hz) and 22 A (60 Hz); (4)junction temperature, Tj: -40 to 150; (5)storage temperature range, Tstg: -40 to 150.

The last one is about the electrica characteristics of U1Q4B42(Ta=25): (1)peak forward voltage, VFM: 1.2 V max at IFM=0.5 A; (2)repetitive peak reverse current, IRRM: 10A max at VRRM=rated; (3)thermal resistance (junction to ambient),DC, Rth(j-a): 75/W.