Last Updated on March 15, 2026 by omar Gamaleldin
S20K275 Varistor 275V 20mm
The S20K275 Varistor 275V 20mm Through Hole is a robust passive overvoltage protection component designed to safeguard electronic circuits and equipment against transient voltage spikes, surges, and electrical disturbances. Varistors are essential in AC mains protection, surge suppression modules, and power electronics to absorb dangerously high transient energies and prevent damage to sensitive components.
Features:
- Metal oxide varistor (MOV) for overvoltage and surge protection.
- Designed for through‑hole mounting with radial solder leads for PCB applications.
- Nominal operating voltage 275 VAC for AC mains environments.
- High peak surge current handling capability up to 8000 A (8 kA, 8/20 µs).
Specifications:
| Parameter | Value |
|---|---|
| Model | S20K275 |
| Technology | Metal Oxide Varistor |
| Varistor Voltage | 430V ±10% |
| Maximum AC Voltage | 275Vrms |
| Maximum DC Voltage | 350V |
| Clamping Voltage | 710V |
| Peak Surge Current (8/20μs) | 8000A |
| Energy Absorption (10/1000μs) | 151J |
| Typical Capacitance (at 1kHz) | 850pF |
| Operating Temperature | –40°C to +85°C |
| Disc Diameter | 20mm |
| Mounting Type | Short Pin (Radial) |
| Lead Pitch | 10mm |
Applications:
- AC mains surge and transient voltage protection circuits.
- Power supply input protection and suppression.
- Consumer electronics surge safeguard.
- Industrial control and automation systems.
- EMI/RFI suppression in power lines.
Package Include:
1x S20K275 Varistor 275V 20mm