TIP122 NPN 100V 5A Power Darlington Transistor TO-220

TIP122 NPN 100V 5A Power Darlington Transistor TO-220 is a high-gain, high-current NPN Darlington transistor used in switching and amplification applications. Its TO-220 package allows efficient heat dissipation, making it suitable for medium to high power circuits. The TIP122 features built-in base-emitter resistors and offers excellent gain at low base currents.

Key Features:

• High Current Capability: Continuous collector current up to 5 Amps.
• High Voltage Tolerance: Withstands up to 100V collector-emitter voltage.
• Darlington Configuration: High current gain with low base drive requirements.
• Built-in Resistors: Includes base-emitter resistors for stable operation.
• TO-220 Package: Easy to mount with built-in heatsink tab for better thermal management.

Technical Specifications:

• Transistor Type: NPN Darlington
• Collector-Emitter Voltage (V_CEO): 100V
• Collector Current (I_C): 5A
• Power Dissipation: 65W (with heatsink)
• DC Current Gain (h_FE): Min. 1000 at I_C = 3A
• Saturation Voltage: 2V max at I_C = 3A, I_B = 12mA
• Package Type: TO-220

Mechanical Specifications:

• Case Style: TO-220
• Pin Configuration: Pin 1 (Base), Pin 2 (Collector), Pin 3 (Emitter)
• Mounting: Through-hole
• Heatsink Compatible: Yes, via metal tab

Pinout and Wiring:

• Pin 1: Base – Receives input control signal
• Pin 2: Collector – Connected to the load or power supply
• Pin 3: Emitter – Connected to ground or output circuit
• Connection Note: Use external flyback diode when driving inductive loads

Datasheet and Documentation:

• Download TIP122 Datasheet (PDF)

Applications:

• Relay and Motor Drivers: Suitable for high-current switching with logic-level control
• Audio Amplifiers: Used in the output stage of audio amplifiers
• Voltage Regulation: Can be used in linear regulator circuits
• Light Dimmers: Controls power to lamps or LEDs
• Power Inverters: Works in DC-AC inverter switching stages

Equivalent Models:

• TIP120: Similar specs but lower voltage (60V)
• BD679: Equivalent NPN Darlington transistor in TO-220
• 2N6388: Alternate part number with matching specs

Package Includes:

• 1 x TIP122 NPN 100V 5A Power Darlington Transistor TO-220