The SIOV-Q20K175 is a leaded varistor from EPCOS (TDK), designed to protect electronic equipment from voltage surges caused by lightning, switching operations, and other transient events. It offers a robust and reliable solution for overvoltage protection in a variety of applications.

Applications

• Power supplies
• Consumer electronics
• Industrial electronics
• Lighting systems
• Telecommunication equipment

Features

• High surge current capability
• Fast response time
• Wide operating voltage range
• RoHS compliant
• UL recognized
• Compact design

Benefits

• Effective overvoltage protection: Provides reliable protection against transient overvoltages, preventing damage to sensitive electronic components.
• Enhanced system reliability: Improves the overall reliability and lifespan of electronic equipment.
• Easy integration: Simple leaded design allows for easy integration into existing circuit boards.
• Meets industry standards: Complies with RoHS and UL safety standards.
• Cost-effective solution: Offers a cost-effective solution for overvoltage protection.

The SIOV-Q20K175 varistor utilizes a zinc oxide (ZnO) ceramic material, which exhibits a non-linear resistance characteristic. Under normal operating conditions, the varistor presents a high resistance, allowing current to flow through the circuit. However, when a transient overvoltage occurs, the varistor's resistance rapidly decreases, diverting the surge current away from the protected components. Once the overvoltage subsides, the varistor returns to its high-resistance state.

Technical Specifications:

• Maximum continuous voltage (AC): 175 V
• Maximum continuous voltage (DC): 230 V
• Surge current (8/20 µs): 6000 A
• Clamping voltage @ 5A: 450 V
• Varistor voltage: 270 V
• Operating temperature range: -40 °C to +85 °C
• Disc diameter: 20mm