E4

The L7805CV is a three-terminal positive Voltage Regulator with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type embeds internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current.

This is the P2N2222A, an NPN silicon BJT (Bipolar Junction Transistor). This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The P2N2222A is specifically rated at 40V and 600mA max.

Characteristics of the bipolar transistor S8050

• Type - n-p-n
• Collector-Emitter Voltage: 25 V
• Collector-Base Voltage: 40 V
• Emitter-Base Voltage: 5 V
• Collector Current: 0.5 A
• Collector Dissipation - 0.625 W
• DC Current Gain (hfe) - 85 to 300
• Transition Frequency - 150 MHz
• Operating and Storage Junction Temperature Range -65 to +150 °

Characteristics of the bipolar transistor S8550

• Type - p-n-p
• Collector-Emitter Voltage: -25 V
• Collector-Base Voltage: -40 V
• Emitter-Base Voltage: -5 V
• Collector Current: -0.5 A
• Collector Dissipation - 0.625 W
• DC Current Gain (hfe) - 85 to 300
• Transition Frequency - 150 MHz
• Operating and Storage Junction Temperature Range -65 to +150