Description:BD135, BD137, BD139 are complementary with BD136, BD138, BD140; Mininum Current Gain - hFE = 40 @ IC = 150 mA; These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant
The maximum SOA for the BD139G is not explicitly stated in the datasheet, but it can be estimated based on the device's thermal resistance and maximum junction temperature. A safe operating area can be assumed to be around 10A and 30V.
To ensure linear operation, the BD139G should be biased in the active region, with a base-emitter voltage (Vbe) between 0.6V and 0.8V, and a collector-emitter voltage (Vce) greater than 1V. The base current should be limited to prevent saturation.
A good PCB layout for the BD139G should provide a low-thermal-resistance path from the device to a heat sink or copper plane. A minimum of 2oz copper thickness is recommended, and the device should be placed near a thermal vias or a heat sink to dissipate heat efficiently.
Yes, the BD139G can be used in switching applications, but it's not optimized for high-frequency switching. The device has a relatively slow switching time (around 10us) and a moderate current gain (around 100). It's suitable for low-frequency switching applications, such as in power supplies or motor control circuits.
To protect the BD139G from ESD, handle the device by the body or use an anti-static wrist strap. Ensure the PCB has ESD protection diodes or resistors, and consider adding a TVS (transient voltage suppressor) diode or a Zener diode to the circuit for additional protection.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
BD139G Overview
Use the download button to access the BD139G schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BD139,
or try a keyword search, such as Power Bipolar Transistors
Suggested Parts
If you searched for BD139G, you might also be interested in these parts:
