SK008DRP

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Introduction

SK008DRP is a type of Thyristors-SCRs, which is widely used in industrial applications. It features reversed polarity, high-voltage, trigger current, withstand voltage, etc. In this article, we will discuss the application field of SK008DRP and its working principle.

Application Field of SK008DRP

SK008DRP is used in a wide range of applications, such as:

• High-voltage DC/AC power supply
• Industrial switching equipment
• Variable speed motors
• Inverters and controllers
• Power converters
• Automotive and aviation power supplies
• Mobile electronic products
• Telecommunications and safety systems

SK008DRP is suitable for all kinds of high-power active and passive applications, as well as in medical devices, telecom equipment, fire alarm systems, etc. It can also be used in areas with high reliability requirements and low working temperature.

Working Principle of SK008DRP

SK008DRP is the abbreviation of the Silicon Controlled Rectifier (SCR). It is a four-terminal device which consists of a PNPN layer. The basic structure is simple, but the internal operation is quite complex. SCR can be activated by a gate current and operated in two modes, on/off and pulse. It works on the principle of the positive temperature coefficient (PTC), which is the temperature dependence of the SCR. The operating characteristics of SCR are normally characterized by four parameters:

• Trigger Current (I_GT): the minimum gate current to turn on the SCR
• Reverse Blocking Voltage (V_BR): the maximum reverse voltage the SCR can withstand
• Gate Trigger Voltage (V_GT): the minimum voltage applied to the gate to turn on the SCR
• Peak On-state Voltage (V_P): the maximum voltage the device can sustain in the on-state

In an SCR, when a voltage greater than the V_BR is applied in the reverse direction, no current flows through it, and thus it blocks the current in the forward direction. When a positive voltage is applied to the gate, the current increases and the voltage across the device falls to the holding voltage, V​_H . The greater the gate current, the greater the current and the lower the voltage. When the gate current is reduced to zero, the current stops flowing and the SCR is in the off-state again.

SK008DRP is designed to provide excellent surge and temperature capability, fast switching times, low gate current, and high dV/dt. The device operates within a wide temperature range, from -55 ℃ to +125 ℃, and is available in various packages.

Conclusion

SK008DRP is a type of Thyristors-SCRs, which is widely used in industrial applications. It features reversed polarity, high-voltage, trigger current, withstand voltage, etc. This article has discussed the application field and working principle of SK008DRP. The device can provide excellent surge and temperature capability, fast switching times, low gate current, and high dV/dt. It is suitable for all kinds of high-power active and passive applications, as well as in medical devices, telecom equipment, fire alarm systems, etc.

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