This part is a kind of semiconductor called KBL608.

Function of this product has (KBL6005 - KBL610) SILICON BRIDGE RECTIFIERS.

Manufacturers : HY ELECTRONIC

Image and pinout :

Some of the text within the PDF file :

KBL6005 thru KBL610 SILICON BRIDGE RECTIFIERS REVERSE VOLTAGE - 50 to 1000Volts FORWARD CURRENT - 6.0Amperes KBL .157(4.0)*45° FEATURES ●Surge overload rating -175 Amperes peak ●ldeal for printed circuit board ●Plastic material has UL flammability classification 94V-0 ●Mounting position :Any .768(19.5) .728(18.5) .587(14.9) .547(13.9) .640(16.3) .600(15.2) .052(1.3)DIA. .048(1.2)TYP. .750 MIN. (19.0) .087(2.2) .071(1.8) .220(5.6) .180(4.6) .256(6.5) .236(6.0) Dimensions in inches and (milimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating at 25℃ ambient temperature unless otherwise specified. Single phase, half wave ,60Hz, resistive or inductive load. For capacitive load, derate current by 20% CHARACTERISTICS Maximum Recurrent Peak Reverse Voltage Maximum R [ ... ]

KBL608 PDF Datasheet Download