The short lead is the collector. The longer lead is the emitter. The emitter is connected to ground (negative)

while the collector is connected to positive(+)

The base is already built in and is sensitive to light.

Supply Voltage:    30 V

FEATURES AND BENEFITS

·      Use for help with lightwave communications

TYPICAL APPLICATIONS

·         Night Light Sensor.

·         Auto ON/OFF Switch.

·         Consumer and Industrial Electronics.

·         Wireless Transmitters.

·         High shock and vibration environments.

·         Automotive subsystems.

·        Wind turbine pitch control.

·         Hybrid vehicles.

·         Rail.

·          Heavy industrial equipment.

·          UPS & telecom systems.

·          Back-Up Power.

·          Regenerative Power.

·          Burst Power.

·          Quick Charge.

·          Cold Starting.

·          DIY.

·          General.

·          Industrial.

Sellers Comment:

        Please if you have any problem with the product or shipping method, please contact before leaving a neutral or negative feedback and the issue would definitely be taking care of. It is an optimum responsibility to make sure that you are a satisfied customer. Thank You.