This part is a kind of semiconductor called 30DF2.

Function of this product has (30DF1 / 30DF2) FAST RECOVERY RECTIFIERS.

Manufacturers : BL

Image and pinout :

Some of the text within the PDF file :

BL FEATURES Low cos t GALAXY ELECTRICAL 30DF1 (Z)---30DF2 (Z) VOLT AGE RANGE: 100 --- 200 V CURRENT : 3.0 A FAST RECOVERY RECT IFIERS DO - 27 D iffus ed junction Low leakage Low forward voltage drop High current capability Eas ily cleaned w ith Freon Alcohol,Is opropanol and s im ilar s olvents MECHANICAL DATA Cas e:JEDEC DO--27,m olded plas tic Term inals : Axial lead ,s olderable per MIL- STD -202,Method 208 Polarity: Color band denotes cathode Weight: 0.041ounces ,1.15 gram s Mounting pos ition: Any MAXIM UM RATINGS AND ELECTRICAL CHARACTERISTICS R atings at 25 am bient tem perature unles s otherwis e s pecified. Single phas e,half wave,50Hz,res is tive or inductive load. For capacitive load,derate by 20% . 30 DF1 Maximum recurrent peak reverse voltage Maxim [ ... ]

30DF2 PDF Datasheet Download