KBU6A KBU6M Bridge Rectifiers Datasheet

Category: Diodes, Electronics, Fairchild Semiconductor

Overview of KBU6A KBU6M Bridge Rectifiers

FAIRCHILD Semiconductor’s KBU6A to KBU6M series are bridge rectifiers designed with high surge current capability, a reliable construction technique, and are ideal for use on printed circuit boards. Their attributes make them suitable for a range of electronic applications. The rectifiers are UL certified under Certificate # E326243, ensuring safety and reliability for users.

Absolute Maximum Ratings

The bridge rectifiers have a variety of maximum repetitive reverse voltages ranging from 50V for the KBU6A model up to 1000V for the KBU6M model. Each model can sustain a maximum RMS bridge input voltage from 35V (KBU6A) to 700V (KBU6M) and the same range applies for the DC reverse voltage. The devices offer an average rectified forward current of 6.0A at a lead temperature of 65°C. Furthermore, they can withstand a non-repetitive peak forward surge current of 250A. For thermal considerations, the bridge rectifiers can operate over a storage and junction temperature range of -55°C to +150°C.

Thermal Characteristics

The thermal characteristics include a power dissipation of 6.7W and thermal resistances of 8.6°C/W junction to ambient per leg and 4.0°C/W junction to lead per leg. These values apply when the device is mounted on a PCB with specific lead length and copper pad size requirements.

Electrical Characteristics

Electrically, the bridge rectifiers have a forward voltage of 1.0V per bridge at 6.0A, with a total bridge reverse current of 5.0µA at 25°C. This reverse current increases to 500µA at a junction temperature of 100°C, indicating the bridge’s performance efficiency at varying operation temperatures.

Typical Performance Characteristics

The datasheet also includes performance charts demonstrating the forward current derating curve, non-repetitive surge current, forward voltage characteristics, and reverse current as a function of reverse voltage. These graphs illustrate the performance of the bridge rectifiers under different conditions such as ambient temperature and percentage of rated peak reverse voltage.

Additional Information

For further detailed specifications, Fairchild provides the full datasheet documentation on their website, with the latest revision being C1 as of July 2010.