The BD678 is silicon epitaxial-base PNP power transistors in monolithic Darlington configuration mounted in Jedec SOT-32 plastic package. They are intended for use in medium power linear and switching applications
Power Transistor?
Transistors are three-terminal semiconductor electronic devices that can be used as switches or amplifiers. They can be of NPN or PNP polarity, and many different types are available with different power and switching speed ratings. If a transistor designed to these concepts can handle more than 1 A of collector current, it is generally considered to be a power transistor. Such transistors must have low output resistance to deliver large load currents, and good junction insulation to resist high voltages. They must also dissipate heat very quickly to avoid overheating.
BD678 Pinout
BD678 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | Emitter |
| 2 | Collector |
| 3 | Base |
BD678 Key Features
- Collector–Emitter Breakdown Voltage— : V(BR)CEO = -60
- DC Current Gain— : hFE = 750(Min) @ IC= -1.5 A
- Minimum Lot-to-Lot variations for robust device performance and reliable operation
- Type Designator: BD678
- Material of Transistor: Si
- Polarity: PNP
- Package: TO126
BD678 Specification
| Ic (mA) | Pd | Vce (max) | Vcb | hfe | @Ic |
|---|---|---|---|---|---|
| 4 | 40 | 60 | 60 | 750 | 1500 |
BD678 Equivalent/Alternate:
- BD605, BD610, BD633, BD634, BD635, BD636, BD637, BD677
Application
- General-Purpose Amplifier
- Medium Power Linear And Switching
You can download this datasheet for BD678 PNP Power Transistor from the link given below:
