Littelfuse V20P50P Varistor Datasheet Summary

General Description

The V20P50P is a radial leaded varistor from the LV UltraMOV® Series. It is designed for overvoltage protection in various electronic circuits. This varistor features a maximum continuous voltage of 50V AC RMS and 65V DC, with a nominal voltage range of 50V to 65V. It has a maximum clamping voltage of 145V and can handle a peak current of up to 100A for an 8/20µs pulse.

Features and Benefits

• High peak surge current rating (up to 100A).
• Reduced footprint and volume required for surge protection.
• Wide operating voltage range (VM(AC)RMS 11V to 95V and VM(DC) 14V to 125V).
• Lead-free, halogen-free, and RoHS compliant.
• High operating temperature range up to 125°C (phenolic coating option).
• Available in multiple model sizes (5mm, 7mm, 10mm, 14mm, and 20mm).

Applications

• LED lights
• Cordless phones
• Audio and video devices
• Mobile phone chargers
• Security systems
• Fire alarm systems
• Automation control systems
• Industrial control contact relays
• Surge protection devices
• Telecom power systems
• Wireless base stations

Electrical Characteristics

• Continuous steady-state applied voltage: AC 11V to 95V, DC 14V to 125V.
• Non-repetitive surge current (8/20µs waveform): 500A to 10,000A.
• Non-repetitive energy capability (2ms waveform): 0.8J to 150J.
• Operating ambient temperature range: -40°C to +85°C (epoxy coated), -40°C to +125°C (phenolic coated).
• Storage temperature range: -40°C to +125°C (epoxy coated), -40°C to +150°C (phenolic coated).
• Temperature coefficient of clamping voltage: < 0.01% °C.
• Isolation voltage capability: 800V (phenolic coated).

Mechanical Characteristics

• Lead material: Copper clad steel wire.
• Insulating material: Cured, flame retardant epoxy polymer (UL94V-0).
• Device labeling: Marked with LF, voltage, and date code.

Dimensions

• Model size: 20mm.
• Lead spacing: Standard lead spacing (see dimensions table).
• Lead formation: Straight leads (L1).

Ordering Information

• Part number: V20P50P.
• Packaging: Bulk pack or tape and reel.

Notes

• The V20P50P is a phenolic coated varistor.
• For applications exceeding 85°C ambient temperature, the peak surge current and energy ratings must be reduced according to the derating curve.
• The device is designed for overvoltage protection and should be used within the specified operating conditions to ensure reliable performance.

Additional Information

• The LV UltraMOV® Series varistors provide an ideal circuit protection solution for DC voltage applications.
• The maximum peak surge current rating can reach up to 10kA (8/20µs pulse) to protect against high peak surge current induced by indirect lightning strike interference, system switching transients, and abnormal fast transients from the power source.
• The datasheet provides detailed information on the device's performance characteristics, including clamping voltage vs. peak current graphs, repetitive surge capability, and thermal derating curves.