The SIOV-Q20K275 is a radial leaded varistor manufactured by EPCOS (TDK). It is designed to provide overvoltage protection for electronic equipment against transient surges, such as those caused by lightning, power line disturbances, and switching operations. This varistor offers a reliable and cost-effective solution for protecting sensitive electronic components.

Applications

• Power supplies
• Industrial controls
• Consumer electronics
• Surge protection devices
• Lighting systems

Features

• High surge current capability
• Fast response time
• Wide operating voltage range
• RoHS compliant
• UL recognized
• Radial leaded package for easy PCB mounting

Benefits

• Robust overvoltage protection: Effectively protects electronic components from damage caused by transient surges.
• Enhanced system reliability: Improves the overall reliability and lifespan of electronic devices and systems.
• Simple integration: Radial leaded package allows for easy and convenient mounting on printed circuit boards.
• Compliance with industry standards: Meets relevant safety and environmental standards, ensuring compliance with regulatory requirements.
• Cost-effective solution: Provides a cost-effective solution for overvoltage protection in various applications.

The SIOV-Q20K275 varistor is constructed from a zinc oxide (ZnO) ceramic material. Its resistance is high under normal operating conditions, but when a transient overvoltage occurs, the resistance rapidly decreases, diverting the surge current away from sensitive components. After the surge subsides, the varistor returns to its high-resistance state.

Technical Specifications:

• Maximum continuous voltage (AC): 275 V
• Maximum continuous voltage (DC): 350 V
• Surge current (8/20 µs): 6000 A
• Clamping voltage @ 5A: 680 V
• Varistor voltage: 430 V
• Operating temperature range: -40 °C to +85 °C
• Disc diameter: 20mm