The S20K625E2K1 is a varistor manufactured by EPCOS (TDK), specifically designed to protect electronic equipment from transient overvoltages. These overvoltages can be caused by various factors, including lightning strikes, power line surges, and electrostatic discharge (ESD). Varistors function as voltage-dependent resistors, exhibiting high resistance during normal operation but rapidly decreasing resistance when exposed to a high-voltage transient, thereby diverting the surge current and protecting sensitive components.

Applications

• Power supplies: Providing overvoltage protection for AC/DC power supplies used in a wide range of electronic devices.
• Industrial automation equipment: Protecting PLCs, motor drives, and other industrial control systems from voltage transients.
• Consumer electronics: Safeguarding appliances such as TVs, computers, and home theater systems from power line disturbances.
• Telecommunication systems: Protecting communication equipment from lightning strikes and other surge events.
• Renewable energy systems: Providing surge protection for solar inverters and wind turbine control systems.

Features

• High surge current withstanding capability: Designed to handle large surge currents without degradation or failure.
• Fast response time: Quickly clamps transient voltages to protect downstream components.
• Wide operating voltage range: Suitable for use in various applications with different voltage requirements.
• Compact design: Allows for easy integration into existing circuit designs.
• RoHS compliant: Manufactured in accordance with RoHS standards, minimizing environmental impact.

Benefits

• Enhanced equipment reliability: Reduces the risk of damage to sensitive electronic components caused by voltage surges.
• Minimized downtime: Prevents equipment failures and reduces the need for costly repairs.
• Extended product lifespan: Protects against cumulative damage from repeated surge events.
• Improved safety: Reduces the risk of electrical hazards associated with overvoltage conditions.
• Cost-effective protection: Provides a simple and affordable solution for surge protection.

Technical Specifications

The S20K625E2K1 varistor has a varistor voltage of 625V. The maximum surge current (8/20 µs pulse) it can withstand is around 6.0kA. The clamping voltage during a surge is provided on the datasheet. For comprehensive electrical characteristics, mechanical dimensions, and safety certifications, refer to the official EPCOS (TDK) datasheet. The operating temperature range and other specifications can be found there as well. The case size is typically a 20mm disc.