STMicroelectronics

BD138

BD138 Description

The BD138 is a PNP bipolar transistor manufactured by STMicroelectronics. It is designed for a wide range of applications, including general-purpose amplification and switching. With an operating temperature range of 150°C (TJ), it offers excellent thermal stability. The BD138 can handle a maximum collector current (Ic) of 1.5 A and a maximum power dissipation of 1.25 W, making it suitable for high-power applications. The Vce saturation (Max) is 500mV @ 50mA, 500mA, ensuring efficient operation at low voltages. The BD138 is packaged in a through-hole tube, making it easy to integrate into various designs.

BD138 Features

• PNP Transistor Type: The BD138 is a PNP transistor, which is commonly used in applications where high current gain is required.
• High Operating Temperature: With an operating temperature of 150°C (TJ), the BD138 can withstand high-temperature environments.
• Low Vce Saturation: The low Vce saturation of 500mV @ 50mA, 500mA ensures efficient operation at low voltages.
• High Collector Current: The BD138 can handle a maximum collector current of 1.5 A, making it suitable for high-power applications.
• Low Collector Cutoff Current: The maximum collector cutoff current (ICBO) is 100nA, ensuring low leakage currents in off-state.
• High DC Current Gain: The minimum DC current gain (hFE) is 40 @ 150mA, 2V, providing high current gain for amplification applications.
• RoHS Compliance: The BD138 is compliant with RoHS3, making it suitable for environmentally friendly designs.

BD138 Applications

The BD138 is ideal for a variety of applications, including:

1. Amplification: Due to its high current gain and low leakage currents, the BD138 is well-suited for audio and general-purpose amplification applications.
2. Switching: The BD138's ability to handle high currents and low saturation voltages make it an excellent choice for switching applications.
3. Motor Control: The BD138's high power dissipation and thermal stability make it suitable for motor control applications.
4. Power Electronics: The BD138 can be used in power electronics applications, such as power supplies and inverters, due to its high current and power ratings.

Conclusion of BD138

The BD138 is a versatile PNP bipolar transistor that offers a combination of high current gain, low leakage currents, and high power dissipation. Its wide operating temperature range and low saturation voltages make it suitable for a variety of applications, including amplification, switching, motor control, and power electronics. The BD138's RoHS compliance and moisture sensitivity level of 1 (unlimited) further enhance its appeal for environmentally friendly and reliable designs. Overall, the BD138 is an excellent choice for designers looking for a high-performance PNP transistor with a wide range of capabilities.