S4X8ES2

Thyristors - SCRs

S4X8ES2 is a type of SCR (Silicon Controlled Rectifier) which is basically a type of Thyristor. Thyristors are defined as a semiconductor device with four layers of alternating P and N semiconductor materials. It is a solid-state device that controls electrical current and acts as a switch for an AC or DC circuit. Also known as a silicon-controlled rectifier (SCR), today, SCRs are typically used to control large power loads. The S4X8ES2 type of SCR is especially designed to provide high-speed performance with low on-state voltage drop.

Application Field

The S4X8ES2 SCR has extensive application field covering soft-start and speed control of motors, phase control, AC circuits and power supplies. It also provides heat resistive high-speed switching applications. A few of the typical applications include AC voltage regulators, phase angle controlled motor speed regulators, laptop and desktops adapters, UPS systems and server powers, airline power supplies and lighting control.

Working Principle

An SCR’s internal architecture consists of three layers of semiconductor material, alternately P-type and Nd-type, sandwiched between two layers of metal. The current flow is blocked until the gate receives a current pulse, triggering the flow of the power current flowing through the SCR. The SCR must remain on until the current drops under its own threshold. This can happen when current control is stopped or when current flow through the load is interrupted. The SCR will also turn off in the event of an overload that exceeds its overload current value.

Benefits of Using S4X8ES2

The S4X8ES2 SCR provides a robust and reliable performance for high speed switching applications. It also features very low on-state voltage drops and can withstand high temperatures. This makes it a very efficient and cost-effective type of SCR for controlling power loads. In addition, this SCR does not require any additional gate drive power, making it a very efficient and energy-saving device for AC and DC circuits.

The S4X8ES2 SCR is a highly-efficient device that can be used to control power loads with a solid, reliable and low on-state voltage drop performance. Applications include AC voltage regulators, phase angle controlled motor speed regulators, UPS systems, server powers, and other AC or DC circuit control operations. It can be used with confidence, as the high speed switching performance and resistance to high temperature and overload current values make it a reliable and cost-effective choice.