Overview
The BU508AF is a high-voltage NPN power transistor manufactured by STMicroelectronics. It is designed for use in standard definition CRT (Cathode Ray Tube) displays and other high-voltage applications. The transistor is built using diffused collector in planar technology, which enhances its performance and reliability in high-voltage environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Polarity | NPN | |
| Type | Power Transistor | |
| Collector-Emitter Voltage (VCEO) | 700 | V |
| Collector Current Max (IC) | 8 | A |
| Power Dissipation (PTOT) | 50 | W |
| DC Current Gain (hFE) Min. | 5 | |
| Collector-Base Voltage (VEBO) | 9 | V |
| Base Current (IB) | 4 | A |
| Insulation Withstand Voltage | 2500 | V (RMS) |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| Max. Operating Junction Temperature (TJ) | 150 | °C |
Key Features
- State-of-the-art technology: Diffused collector “Enhanced generation”
- Stable performances versus operating temperature variation
- Low base-drive requirement
- Tight hFE range at operating collector current
- High ruggedness
- Fully insulated power package, U.L. compliant
Applications
- Horizontal deflection output for CRT TV
- Switch mode power supplies for CRT TV
Q & A
- What is the BU508AF transistor used for?
The BU508AF is used for horizontal deflection output in CRT TVs and switch mode power supplies for CRT TVs.
- What is the maximum collector-emitter voltage of the BU508AF?
The maximum collector-emitter voltage (VCEO) is 700 V.
- What is the maximum collector current of the BU508AF?
The maximum collector current (IC) is 8 A.
- What is the power dissipation of the BU508AF?
The total power dissipation (PTOT) is 50 W.
- What is the DC current gain (hFE) of the BU508AF?
The minimum DC current gain (hFE) is 5.
- What is the storage temperature range for the BU508AF?
The storage temperature range (Tstg) is -65 to 150 °C.
- What is the maximum operating junction temperature of the BU508AF?
The maximum operating junction temperature (TJ) is 150 °C.
- What technology is used in the manufacture of the BU508AF?
The BU508AF is manufactured using diffused collector in planar technology.
- Is the BU508AF package fully insulated?
Yes, the BU508AF has a fully insulated power package that is U.L. compliant.
- What is the package type of the BU508AF?
The BU508AF is available in an ISOWATT218FX package.
