The 2N2219A is an NPN silicon transistor, designed for high-speed switching and signal amplification applications. It stands out for its TO-39 metal package, which offers excellent thermal management and resistance to harsh operating conditions.

Technical Specifications:

• Type: NPN Silicon Planar Transistor
• Package: TO-39 (Metal can)
• Maximum Collector-Emitter Voltage: 40V
• Maximum Collector Current: 800mA (0.8A)
• Transition Frequency: > 250MHz
• Power Dissipation: 0.8W (at ambient temperature) up to 3W (with heatsink)

Main Applications:

• RF Amplification: Ideal for preamplifiers and oscillators in small FM/AM transmitters
• Load Driving: Control for relays, lamps, and small motors requiring up to 800mA
• Logic Circuits: Used as a switch in digital systems
• Educational Projects: Ideal for students and hobbyists due to its durability