This part is a kind of semiconductor called VUB120-12NO1.

Function of this product has (VUB120 / VUB160) Three Phase Rectifier Bridge.

Manufacturers : IXYS Corporation

Image and pinout :

Some of the text within the PDF file :

VUB 120 / 160 Three Phase Rectifier Bridge with IGBT and Fast Recovery Diode for Braking System VRRM = 1200/1600 V IdAVM = 121/157 A Preliminary Data VRRM V Type VRRM V Type 1200 VUB 120-12 NO1 1600 VUB 120-16 NO1 1200 VUB 160-12 NO1 1600 VUB 160-16 NO1 Symbol VRRM IdAVM IFSM I2t Ptot VCES VGE IGBT Test Conditions TC = 75°C, sinusoidal 120° TVJ = 45°C, TVJ = 150°C, TVJ = 45°C, TVJ = 150°C, TC = 25°C per diode TVJ = 25°C to 150°C Continuous TC = 25°C, DC TC = 75°C, DC TC = 75°C, d = 0.5 tp = Pulse width limited by TVJM TC = 25°C Fast Recovery Diode Maximum Ratings VUB 120 VUB160 1200/1600 1200/1600 V Rectifier Diodes 121 650 580 2110 1680 130 1200 ± 20 100 71 56 200 400 1200 25 39 tbd 200 180 100 -40...+150 150 -40...+125 157 850 760 3610 2880 16 [ ... ]

VUB120-12NO1 PDF Datasheet Download