The S20K350E2K1 is a varistor manufactured by EPCOS (TDK), designed for the protection of electronic circuits against transient overvoltages. These overvoltages can be caused by events such as lightning strikes, inductive load switching, and electrostatic discharge (ESD). The varistor provides a robust and reliable means to safeguard sensitive electronic components and ensure the continued operation of electronic equipment.

Applications

• Power supplies
• Industrial automation equipment
• Consumer electronics
• Telecommunications equipment
• Surge protection devices (SPDs)

Features

• High surge current handling capability
• Fast response time to transient events
• Compliant with UL, CSA, VDE, and IEC safety standards
• Wide operating voltage range
• RoHS compliant
• Lead-free terminals

Benefits

• Effective protection against overvoltage transients
• Improved reliability and extended lifespan of electronic equipment
• Reduced downtime and maintenance costs
• Compliance with industry safety and environmental regulations
• Easy integration into circuit designs
• Cost-effective solution for transient voltage suppression

Additional Details

The S20K350E2K1 varistor has a varistor voltage of 350V, meaning that it will begin to conduct significantly when the voltage across it exceeds this level, thereby clamping the voltage and diverting surge current away from protected components. The 'S20' indicates a 20mm disk size, which allows for a high surge current handling capacity. The 'E2K1' suffix specifies the lead configuration and packaging. It is crucial to consult the EPCOS (TDK) datasheet for detailed specifications, including the maximum surge current rating (typically specified for an 8/20 µs pulse), clamping voltage characteristics, energy absorption capabilities, and operating temperature range. These parameters are critical for selecting the appropriate varistor for the intended application. This device is designed for through-hole mounting. Careful consideration of the ambient operating temperature is essential, as it can affect the varistor's performance and lifespan. Derating curves provided in the datasheet should be consulted for operation at elevated temperatures to ensure proper function. The varistor's non-linear resistance allows it to quickly and effectively protect circuits from damaging voltage spikes.