This part is a kind of semiconductor called IDP18E120.

Function of this product has Fast Switching EmCon Diode.

Manufacturers : Infineon Technologies

Image and pinout :

Some of the text within the PDF file :

IDP18E120 IDB18E120 Fast Switching EmCon Diode Feature • 1200 V EmCon technology • Fast recovery • Soft switching • Low reverse recovery charge • Low forward voltage www.net Product Summary VRRM IF VF T jmax P-TO220-3.SMD 1200 18 1.65 150 P-TO220-2-2. V A V °C • Easy paralleling Type IDP18E120 IDB18E120 Package P-TO220-2-2. Ordering Code Q67040-S4493 Marking D18E120 D18E120 Pin 1 C NC PIN 2 A C PIN 3 A P-TO220-3.SMD Q67040-S4387 Maximum Ratings, at Tj = 25 °C, unless otherwise specified Parameter Repetitive peak reverse voltage Continous forward current TC=25°C TC=90°C Symbol VRRM IF Value 1200 31 19.8 Unit V A Surge non repetitive forward current TC=25°C, tp=10 ms, sine halfwave I FSM I FRM Ptot 78 47 W 113 54 Maximum repetitive forward cur [ ... ]

IDP18E120 PDF Datasheet Download