This part is a kind of semiconductor called RH3G.
Function of this product has Damper Diodes (For TV).
Manufacturers : Sanken electric
Image and pinout :

Some of the text within the PDF file :
Damper Diodes (For TV) Absolute Maximum Ratings Parameter Type No. VRM (V) I F (AV) (A) IFSM (A) 50Hz Half-cycle Sinewave Single Shot Electrical Characteristics (Ta = 25°C) Tstg (°C) VF (V) max IF (A) IR (µA) IR (H) (µA) Others Tj (°C) t rr (µs) IF /IRP (mA) t rr (µs) IF /IRP (mA) Rth (j- ) (°C/ W) Mass Fig. (g) VR = VRM VR = VRM max Ta =100°C max RH 10F 1500 1300 0.8 60 1.0 500 –40 to +150 1.3 50 2.5 1.5 10 350 100/100 2.5 50 1.0 1.0 10 4.0 10/10 15.0 12.0 1.3 100/200 10.0 8.0 0.44 0.6 A B RH 2D RH 2F 1500 RH 3F 1.0 1.2 C D RH 3G RH 4F 1600 1500 RH 10F, 2D, 2F I FSM (A) 1.0 I F (AV) (A) TaIF(AV) Derating VF IF Characteristics (Typical) 10 60 50 40 30 20 10 0 I FMS Rating I FSM (A) Forward Current IF (A) 0.8 20ms 0.6 0 [ ... ]
RH3G PDF Datasheet Download
