2N3906 PNP General Purpose Transistor

The 2N3906 is the general purpose (PNP Silicon) PNP switching transistor, which is produced by Fairchild Semiconductor.

2n3906 absolute maximum ratings: (1)Collector–Emitter Voltage: 40 Vdc; (2)Collector–Base Voltage: 40 Vdc; (3)Emitter–Base Voltage: 5.0 Vdc; (4)Collector Current — Continuous: 200 mAdc; (5)Total Device Dissipation, TA = 25℃: 625mW; (6)Total Power Dissipation, TA = 60℃: 250 mW; (7)Total Device Dissipation, TC = 25℃: 1.5 Watts; (8)Operating and Storage Junction Temperature Range: –55 to +150℃.

2N3906 features: (1)Capable of 600mW of Power Disspation and 200mA Ic; (2)Lead free finish/ROHS compliant; (3)Epoxy meets UL 94 V-O flammability rating; (4)Moisure sensitivity level 1; (5)Through Hole pakage; (6)Marking: type number.

LED Bike Light System 2N3906

This LED Bike Light System can be made to be just a headlight or both a headlight/taillight bike light.

The circuit use simple electronic components such as LM555,PNP Transistor (2N3906),NPN Transistor (2N2222) plus some resistors and capacitors.

 My NiteRider light was off getting fixed at the factory and I needed something for my daily commute. I have used it in a 50 minute pouring rain commute on the way in to work and it worked like a champ.