TDK Metal Oxide Varistor 19J 250V Surge Protection Disc

The TDK Metal Oxide Varistor 19J 250V is a round, radial-leaded surge protection disc designed to help safeguard sensitive electronic circuits from harmful transient voltage spikes. It has a peak energy rating of 19 J and a 250 V rating, and is part of the StandarD series.

Overview

This varistor absorbs and dissipates excess energy, helping to prevent damage to connected equipment. It offers a surge current rating of up to 1.2 kA. Its voltage-dependent characteristics allow it to respond to overvoltage conditions, clamping the voltage to safe levels and safeguarding downstream components.

Key Features

• Peak energy rating of 19 J, within a range of 0.3 J to 410 J
• Surge current rating of up to 1.2 kA
• Operating voltage range from 11 VRMS to 1100 VRMS
• Varistor voltage tolerance options of ±10% and ±5%
• Flame-retardant epoxy resin coating meeting UL94V-0
• Approved by UL, CSA, VDE, CQC, and IEC
• Operating temperature range from -40 °C to 85 °C
• Endurance of 1000 hours at 85 °C

Applications

This varistor is intended for integration into power supplies, industrial controls, and safety systems, where it contributes to protection of downstream electronic components in industrial and safety-critical applications.

Dimensions and Weight

The component measures 3.3 (width), 1.5 (depth), and 4.3 (height), with a weight of 0.9 g.

The flame-retardant epoxy resin housing supports durability in demanding environments, and the varistor is designed for reliable operation across a wide temperature range. Its round, radial-leaded disc format and 250 V rating make it a suitable choice for protecting electronic circuits in power supplies, industrial controls, and safety systems.