SE20FJHM3/I

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Single-phase silicon rectifier bridges are the most commonly used devices in AC power supplies. SE20FJHM3/I is a type of high efficiency single-phase full-wave bridge rectifier manufactured by STMicroelectronics, which is specially designed for AC power supply applications. It is an integrated low-voltage rectifier with low power consumption and high stability.

As mentioned above, SE20FJHM3/I is originally designed for AC power supplies. It is an ideal choice for applications such as power adapters, personal computers, LCD TV power supplies, and other AC-DC power supplies. It is widely used in home appliances, air conditioners, small and medium-sized inverters, and many industrial applications.

Working Principle:

SE20FJHM3/I is a high efficiency single-phase full-wave bridge rectifier. It consists of four diodes connected in a bridge configuration. The four diodes form a rectifying network which allows current to flow in one direction only. When an AC voltage is applied to the rectifier, the positive and negative cycles of the voltage alternately forward-bias two diode pairs, allowing current to flow through two distinct paths. During the positive half-cycle of the AC supply, diodes D1 and D3 are forward-biased, while diodes D2 and D4 are reverse-biased, allowing current to flow through the top path. During the negative half-cycle of the AC supply, diodes D2 and D4 are forward-biased, while diodes D1 and D3 are reverse-biased, allowing current to flow through the bottom path. The output of the bridge rectifier is a DC voltage, which can be filtered or converted to a desired voltage level by an AC-DC converter.

Advantages:

The SE20FJHM3/I offers the following advantages:

• Allows an efficiency of up to 98%, which is much higher than that of conventional silicon rectifier bridges.
• Low conducting losses, which is also much lower than that of conventional silicon rectifier bridges.
• Low-noise operation.
• Compact size and lightweight, which makes it suitable for use in limited PCB space.

Conclusion:

The SE20FJHM3/I single-phase full-wave bridge rectifier from STMicroelectronics is designed for AC-DC power adapters, computer power supplies and other AC-DC power supplies, and is an ideal choice for applications that require high efficiency and low noise operation. The rectifier has a high efficiency of up to 98%, low conducting losses, and low-noise operation, thanks to its integrated low-voltage rectifier design. With its compact form factor, the SE20FJHM3/I is perfect for applications such as power adapters and LCD TV power supplies, where space is limited.

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