This part is a kind of semiconductor called SKKH26.

Function of this product has Thyristor / Diode Modules.

Manufacturers : Semikron International

Image and pinout :

Some of the text within the PDF file :

VRSM VRRM (dv/ ITRMS (maximum value for continuous operation) VDRM dt)cr 50 A V V V/µs ITAV (sin. 180; Tcase = 68 °C) 32 A 500 400 500 – – SKKH 26/04 D – 700 600 500 SKKT 26/06 D – SKKH 26/06 D SKKH 27/06 D 900 800 500 SKKT 26/08 D SKKT 27/08 D1) SKKH 26/08 D SKKH 27/08 D 1300 1200 1000 SKKT 26/12 E SKKT 27/12 E1) SKKH 26/12 E SKKH 27/12 E 1500 1400 1000 SKKT 26/14 E SKKT 27/14 E1) SKKH 26/14 E SKKH 27/14 E 1700 1600 1000 SKKT 26/16 E SKKT 27/16 E1) SKKH 26/16 E SKKH 27/16 E SEMIPACK® 1 Thyristor / Diode Modules SKKT 26 SKKT 27 SKKT 27B SKKH 26 SKKH 27 Symbol Conditions ITAV ID IRMS ITSM i2t tgd tgr (di/dt)cr tq IH IL VT VT(TO) rT IDD; IRD VGT IGT VGD IGD Rthjc Rthch Tvj Tstg Visol M1 M2 a w Case sin. 180; B2/B6 W1/W3 Tcase = 68 °C Tcase = 85 °C Tamb = 45 [ ... ]

SKKH26 PDF Datasheet Download