This part is a kind of semiconductor called FMX-G22S.

Function of this product has Ultra-Fast-Recovery Rectifier Diodes.

Manufacturers : Sanken electric

Image and pinout :

Some of the text within the PDF file :

SANKEN ELECTRIC CO., LTD. FMX-G22S 1. Scope The present specifications shall apply to Sanken silicon diode, FMX-G22S. 2. Outline Type Structure Applications Silicon Diode Resin Molded Flammability: UL94V-0 (Equivalent) High Frequency Rectification，etc. 3. Absolute maximum ratings No. Item 1 Transient Peak Reverse Voltage 2 Peak Reverse Voltage 3 Average Forward Current 4 Peak Surge Forward Current 5 I2t Limiting Value 6 Junction Temperature 7 Storage Temperature 8 Dielectric Strength Symbol Unit VRSM VRM IF(AV) IFSM I2t V V A A A2s Tj °C Tstg °C kV Rating 200 200 10 150 112.5 40 +150 40 +150 A.C. 1.0 Conditions Tc=97°C, sinewave 10msec. 10msec. half sinewave, one shot Junction and case (1min.) 4. Electrical characteristics (Ta=25°C, unless otherwise specified) No. I [ ... ]

FMX-G22S PDF Datasheet Download