TF2528S-451Y10R0-K1

Overview

The TF2528S-451Y10R0-K1 is a leaded disk varistor manufactured by TDK Corporation. It features a maximum DC operating voltage of 745V and an AC rating of 550Vrms. The component supports a nominal discharge current of 10kA (8/20µs, 15 times) and a maximum surge current of 20kA (8/20µs, 1 time). It offers an energy absorption capacity of 780J with a typical capacitance of 860pF. Physical dimensions include a maximum body width of 27.50mm, height of 32.00mm, and thickness of 10.00mm. Lead spacing is 12.70mm ±1.00mm, with a minimum lead length of 25.00mm and diameter of 1.00mm ±0.05mm.

Feature Summary

• Provides high-energy surge protection for sensitive electronic circuits
• Designed for through-hole mounting with axial leads
• Capable of handling significant transient current events

Applications

• Consumer electronics power supply input protection
• Data processing equipment line filtering
• Industrial control system transient suppression

Procurement Notes

Verify the specific datasheet version for accurate safety certifications and environmental compliance details such as RoHS status. Confirm that the physical dimensions and lead specifications match your PCB layout requirements. Ensure the operating voltage ratings align with your circuit's maximum continuous voltage to prevent premature degradation or failure under normal operating conditions.

Selection Notes

Select this component when high energy absorption is required for AC mains or high-voltage DC lines. Consider the 860pF capacitance impact on signal integrity if used in high-frequency data lines. Evaluate the thermal environment against the specified operating temperature range. Compare the 10kA discharge capability against expected surge levels in the target application to ensure adequate safety margins.

Part Context

This part belongs to the TF series of leaded varistors from TDK Corporation. It is designed for general-purpose overvoltage protection in industrial and consumer applications. The series typically offers robust performance against lightning-induced surges and switching transients. It serves as a critical component in protecting downstream circuitry from voltage spikes exceeding the clamping voltage threshold.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative varistors based on matching voltage ratings, energy absorption capabilities, and physical footprint constraints before substitution.