BD675 NPN Power Darlington Transistor 45V 4A TO-126 Package

BD675 NPN Power Darlington Transistor 45V 4A TO-126 Package

The BD675 is a high-current NPN Darlington transistor designed for medium-power amplification and switching applications. With a collector-emitter voltage of 45V and a collector current of up to 4A, it provides high current gain, low saturation voltage, and excellent thermal stability.

Encased in a TO-126 package, the BD675 allows efficient heat dissipation, making it ideal for audio amplifiers, motor drivers, voltage regulators, and medium-power switching circuits. Its Darlington configuration provides higher current amplification than a single transistor, making it suitable for driving moderate to high loads in both industrial and hobbyist projects.

Click here to view related products

Features:

• Transistor Type: NPN Silicon Darlington
• Package: TO-126 (medium-power, thermally efficient)
• Collector-Emitter Voltage (V_CE): 45V
• Collector Current (I_C): 4A
• Power Dissipation (P_tot): Up to 80W (with proper heatsink)
• High Current Gain (hFE): 1000–5000 (typical for Darlington pair)
• Low Saturation Voltage: Efficient switching and amplification
• High Thermal Stability: Reliable performance under heavy current loads
• Durable & Reliable: Long-term professional and hobbyist use

Applications:

• Audio Amplifiers: Driver and output stages requiring high current gain
• Relay & Motor Drivers: Efficiently drives motors, solenoids, and relays
• Voltage Regulators: Ensures stable power supply in medium-power circuits
• Switching Circuits: Medium-power load switching with high amplification
• Industrial & Hobby Projects: Suitable for experimentation and prototypes
• Darlington Amplification Circuits: Provides high current gain for medium-power applications
• bd675-transistor-datasheet