The S10K440E2 is a metal oxide varistor (MOV) from EPCOS (TDK), designed to protect electronic equipment against transient voltage surges. It is part of the S series of varistors, known for their high surge current capability and energy absorption characteristics. The varistor provides a clamping voltage to limit the voltage across sensitive components during overvoltage events, preventing damage and ensuring reliable operation of the protected circuit.

Applications

• Power supplies: Protection against surges on AC and DC input lines.
• Consumer electronics: Surge protection in TVs, audio equipment, and other home appliances.
• Industrial equipment: Protection of control circuits, motor drives, and other industrial electronics.
• Lighting systems: Surge protection for LED drivers and other lighting control circuits.
• Telecommunications equipment: Protection of telephone lines and network interfaces.

Features

• High surge current capability: The varistor can withstand high surge currents without degradation.
• Fast response time: Quickly clamps transient overvoltages to protect sensitive components.
• Wide operating voltage range: Suitable for use in a variety of applications with different voltage requirements.
• RoHS compliant: Complies with environmental regulations restricting the use of hazardous substances.
• Compact size: Allows for easy integration into space-constrained applications.

Benefits

• Enhanced protection: Prevents damage to sensitive electronic components from voltage surges.
• Increased reliability: Improves the reliability of electronic equipment by protecting against overvoltage events.
• Reduced downtime: Minimizes downtime due to component failure caused by surges.
• Cost savings: Reduces the cost of repair and replacement of damaged components.
• Improved safety: Protects against electrical hazards caused by overvoltages.

Technical Specifications

The S10K440E2 has a varistor voltage of 440V, a maximum surge current of 2.5 kA (8/20 μs pulse), and a maximum clamping voltage of 710V. It is housed in a 10mm disc package. Operating temperature range is typically -40°C to +85°C. Specific derating curves and detailed specifications should be consulted from the manufacturer's datasheet for accurate application.