The SIOV-Q20K350 is a leaded varistor from EPCOS (TDK) meticulously engineered for robust transient voltage suppression, safeguarding sensitive electronic equipment from damaging voltage surges. This metal oxide varistor (MOV) is designed to protect against overvoltage events arising from sources such as lightning strikes, power line disturbances, and the switching of inductive loads. Its resilient construction and consistent performance make it a reliable component across a wide spectrum of applications.

Applications

• Power supplies
• Surge protection devices
• Industrial automation equipment
• Consumer electronics
• Telecommunications infrastructure

Features

• High surge current handling capacity
• Extremely fast response time to transient events
• Wide operating voltage range
• Compliant with RoHS environmental standards
• Recognized under UL safety standards
• Compact form factor for efficient use of board space

Benefits

• Protects valuable electronic components from overvoltage-induced damage
• Enhances the long-term reliability and lifespan of electronic systems
• Minimizes costly downtime and reduces maintenance requirements
• Improves overall safety by mitigating electrical hazards and preventing fires
• Meets stringent industry benchmarks for safety and operational performance

Technical Specifications

The SIOV-Q20K350 is characterized by a maximum continuous operating voltage of 350 Vrms (AC) and 455 Vdc (DC). Its ability to withstand high surge currents is precisely defined based on specific waveform characteristics and pulse counts. The clamping voltage, which dictates the voltage level at which the varistor begins to shunt excess voltage, is optimized to provide effective protection for connected equipment. The device operates reliably across a temperature range typically from -40°C to +85°C. The 'Q' designation specifies a particular lead configuration tailored for through-hole mounting. The 20 refers to the disc size in mm.

By providing rapid and precise clamping of transient overvoltages, this varistor plays a critical role in ensuring the stable and secure operation of diverse electrical and electronic systems. Its robust design ensures dependable performance in challenging operational conditions.