Power Transistor BD648 PNP Darlington, TO-220

Power Transistor BD648 PNP Darlington, TO-220

Transistors

Reference: TRBD648

Part.No: BD648

€1.40

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The BD648 is a high-gain PNP Darlington transistor in a TO-220 package, engineered for high-voltage switching and amplification of large loads. Ideal for power supply circuits, motor drivers, and industrial control applications.

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Description
Product Details

BD648 PNP Darlington Power Transistor – High Voltage, High Gain Switching

The BD648 is a PNP Darlington power transistor that combines exceptionally high current gain with robust voltage handling. Its Darlington topology allows you to drive substantial loads directly from microcontroller outputs or logic-level sources, making it the go-to choice for relay drivers, solenoid circuits, and motor speed control.

Functions & Applications

Darlington Configuration: Exceptional current gain (hFE) eliminates need for pre-driver stages in many applications.
High Voltage Rating: Robust Vceo tolerance for industrial and automotive power circuits.
TO-220 Package: Standard heatsink-mountable package; suits both breadboarding prototypes and production boards.
Internal Protection: Often includes integrated freewheeling diode; verify datasheet for your specific design.
Logic-Level Compatible: Driven directly from 5V and 3.3V microcontroller outputs without additional buffers.

Technical Specifications

Parameter	Value / Specification
Transistor Type	Darlington
Polarity / Channel	PNP
Package / Case	TO-220
Collector-Emitter Voltage (Vceo)	80V
Max Collector Current (Ic)	10A
Power Dissipation (Pd)	65W
DC Current Gain (hFE)	≥750 (Darlington)
Mounting Type	Through-Hole (THT), Heatsink-mountable

Frequently Asked Questions

Q: What load current can the BD648 handle?
A: The BD648 can safely switch up to 10A collector current (Ic). For inductive loads (relays, solenoids, motor coils), always use a freewheeling diode across the load to protect against voltage spikes.

Q: Is the BD648 suitable for Arduino control?
A: Yes. The BD648's Darlington topology allows it to be driven directly by a 5V or 3.3V microcontroller I/O pin. A base current of just a few milliamperes can switch loads up to 10A, eliminating the need for a pre-driver stage in most circuits.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: Darlington
Transistor Polarity / Channel: PNP
Transistor Case Style: TO-220

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