BC140 NPN Metal Transistor 40V 1A TO-39
The BC140 is a silicon NPN medium-power bipolar junction transistor designed for general-purpose switching and amplification. Housed in a robust TO-39 metal can package, it offers improved thermal performance and mechanical durability compared to plastic alternatives. With a collector-emitter voltage rating of 40V and a collector current up to 1A, it is suitable for driver stages, power switching, and medium-load control applications.
The BC140 is widely used in industrial, automotive, and general electronics projects where higher current handling is required compared to small-signal transistors like BC108. It supports stable gain groups and good switching speed, making it suitable for relay drivers, audio output stages, motor drivers, and power control circuits.
Features:
- Silicon NPN medium-power transistor.
- TO-39 metal can package.
- High collector current capability.
- Suitable for switching and amplification.
- Good thermal performance.
- Stable DC current gain groups.
- Fast switching performance.
- Durable metal housing.
Specifications:
| Parameter | Value |
|---|---|
| Transistor Type: | NPN |
| Package: | TO-39 |
| Collector-Emitter Voltage (VCEO): | 40V |
| Collector-Base Voltage (VCBO): | 80V |
| Emitter-Base Voltage (VEBO): | 7V |
| Maximum Collector Current (IC): | 1A |
| Peak Collector Current (ICM): | 1.5A |
| Maximum Base Current: | 200mA |
| Total Power Dissipation: | 3.7W (Tc ≤ 45°C) |
| Transition Frequency (fT): | 50MHz |
| Junction Temperature: | 175°C (max) |
| Operating Temperature: | -65°C to +150°C |
Pinout:
| Pin Number | Pin Name |
|---|---|
| 1 | Emitter |
| 2 | Base |
| 3 | Collector |
Applications:
- Relay drivers.
- Medium power switching circuits.
- Audio amplifier output stages.
- Motor driver circuits.
- Power regulation circuits.
- Industrial control systems.
- Automotive electronics.
Packages:
- 1x BC140 NPN Metal Transistor 40V 1A TO-39.