The BUS98A is a NPN power transistor manufactured by Freescale Semiconductor (now NXP Semiconductors). It is designed for use in various power switching and amplification applications.

Applications

• Switching regulators
• DC-DC converters
• Motor control circuits
• Power amplifiers
• Inverters
• Lighting ballast circuits

Features

• Transistor Type: NPN
• Collector-Emitter Voltage (VCEO): 400V
• Collector Current (IC): 8A
• Collector Power Dissipation (PC): 60W
• Gain (hFE): Typically between 10 and 40 at specified conditions.
• Package: TO-220AB
• Fast Switching Speed: Suitable for high-frequency switching applications.

Benefits

• High Voltage Capability: The 400V VCEO rating allows for use in high-voltage applications.
• High Current Handling: The 8A collector current rating enables control of significant power.
• Efficient Power Switching: Low saturation voltage minimizes power loss during switching.
• Easy to Mount: The TO-220AB package is easy to mount on a heatsink for thermal management.
• Robust Design: Designed for reliable operation in demanding environments.

Additional Details

The BUS98A is characterized by its high breakdown voltage and high current capability, making it a suitable choice for power switching and amplification. It requires a heatsink to dissipate heat effectively, especially when operating at high power levels. The transistor’s characteristics can vary depending on the specific batch and operating conditions, so it's essential to refer to the datasheet for precise values and derating information.

Proper biasing and thermal management are crucial for ensuring reliable operation. The BUS98A is commonly used in applications where a rugged and reliable power transistor is required.