S5K R7G Discrete Semiconductor Products

Diodes - Rectifiers - Single

The S5K R7G is a single-phase, full-bridge rectifier designed for AC to DC power conversion. It is often used in power supplies, motor drives, and battery chargers, as well as many other industrial and consumer applications. It has a wide variety of operating temperature ranges, including both normal and temperature cycling.

Applications:

S5K R7G is an efficient, low maintenance rectifier, ideal for applications where low power consumption is required or when a single phase is desired - like power supplies, motor drives and battery chargers. It is also suitable for applications that require precise temperature control, such as high-frequency welding or ultrasonic welding.

• Power Supply Applications
• Battery Charge Applications
• Motor Drive Applications
• High Frequency Welding Applications
• Ultrasonic Welding Applications

Features:

• AC to DC Conversion
• Wide Operating Temperature Range
• Low Maintenance
• High Efficiency
• Temperature Cycling
• Soft Start Voltage Ramp

Working Principles:

The working principle of the S5K R7G is based on a full-bridge rectification design. It uses two pairs of high-current-carrying semiconductor switches (typically SCRs or thyristors) to switch the AC input voltage into a DC output voltage. The switching is controlled by either a derived pulse-width modulation (PWM) control technique, or by a traditional phase control approach.

When the SCRs or thyristors are closed, the current will flow in the forward direction and is rectified to DC. The two switches in each pair are regulated separately. This allows the rectifying active elements to be regulated in one direction while the other switch is opened to convert current in the opposite direction.

Advantages:

• High efficiency – up to 98%
• Low power loss
• Excellent power factor
• High stability in operation
• Compact size
• Fast switching capability

Disadvantages:

• High cost
• High volume of heat dissipation
• Noisy operation
• Requires high voltage insulation

The S5K R7G is a versatile and economical full-bridge rectifier designed for AC to DC power conversion. With its high efficiency and low power loss, it is ideal for applications that require precise temperature control, such as welding and battery charging. The S5K R7G’s compact size and fast switching capability make it a great choice for power supplies and motor drives. However, its high cost, volume of heat dissipation, noisy operation and requirement for high voltage insulation are its main disadvantages.