Overview
The BD681 is an NPN power Darlington transistor manufactured by STMicroelectronics. It is designed using planar base island technology with a monolithic Darlington configuration. This transistor is known for its good hFE linearity, high fT frequency, and the presence of an integrated antiparallel collector-emitter diode. These features make it suitable for a variety of power management and control applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCEO) | 100 | V |
| Collector Current (IC) | 4 | A |
| Base Current (IB) | 0.1 | A |
| Total Dissipation at Tcase = 25°C (PTOT) | 40 | W |
| Maximum Operating Junction Temperature (TJ) | 150 | °C |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| DC Current Gain (hFE) | 750 | - |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 2.5 | V |
| Package | TO-225AA, TO-126-3, SOT-32 | - |
| RoHS Compliance | Ecopack1 | - |
Key Features
- Good hFE linearity
- Monolithic Darlington configuration with integrated antiparallel collector-emitter diode
- High fT frequency
- High collector current and collector-emitter voltage ratings
- Low collector-emitter saturation voltage (VCE(sat))
- High DC current gain (hFE)
- RoHS compliant packaging
Applications
The BD681 is suitable for various power management and control applications, including:
- Power amplifiers and drivers
- Motor control circuits
- Switching regulators and power supplies
- Relay and solenoid drivers
- General-purpose power switching applications
Q & A
- What is the maximum collector-emitter voltage (VCEO) of the BD681 transistor?
The maximum collector-emitter voltage (VCEO) of the BD681 transistor is 100 V.
- What is the maximum collector current (IC) of the BD681 transistor?
The maximum collector current (IC) of the BD681 transistor is 4 A.
- What is the DC current gain (hFE) of the BD681 transistor?
The DC current gain (hFE) of the BD681 transistor is 750.
- What is the collector-emitter saturation voltage (VCE(sat)) of the BD681 transistor?
The collector-emitter saturation voltage (VCE(sat)) of the BD681 transistor is 2.5 V.
- What are the available packages for the BD681 transistor?
The BD681 transistor is available in TO-225AA, TO-126-3, and SOT-32 packages.
- Is the BD681 transistor RoHS compliant?
Yes, the BD681 transistor is RoHS compliant.
- What is the maximum operating junction temperature (TJ) of the BD681 transistor?
The maximum operating junction temperature (TJ) of the BD681 transistor is 150°C.
- What is the total dissipation at Tcase = 25°C (PTOT) for the BD681 transistor?
The total dissipation at Tcase = 25°C (PTOT) for the BD681 transistor is 40 W.
- What are some common applications of the BD681 transistor?
The BD681 transistor is commonly used in power amplifiers, motor control circuits, switching regulators, relay and solenoid drivers, and general-purpose power switching applications.
- Does the BD681 transistor have an integrated antiparallel diode?
Yes, the BD681 transistor has an integrated antiparallel collector-emitter diode.
