TFI 20

Power Line Filter Modules Overview

The TFI 20 is a 20W power line surge filter designed for PCB mounting in a compact DIP-24 plastic case. It operates within a voltage range of 43 VDC to 160 VDC and features solder pin termination. The device handles transients up to 385 VDC at 168 VDC, complying with RIA12 standards. Operating temperatures span from -40°C to +95°C. Dimensions are 25.4 mm length, 10.4 mm width, and 40.6 mm height.

Power Line Filter Modules Feature Summary

• Clamps momentary over-voltage transients to protect downstream DC/DC converters
• Complies with RIA12 and NF F 01-510 railway transient standards
• Universal compatibility with any DC/DC converter input

Power Line Filter Modules Applications

• Railway applications requiring high voltage transient protection
• 72V DC battery systems in railway environments
• 96V DC battery systems in railway environments
• 110V DC battery systems in railway environments

Power Line Filter Modules Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct voltage rating and package configuration. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to procurement. Ensure the selected variant matches the required operating temperature range and transient handling capabilities for the target application environment.

Power Line Filter Modules Selection Notes

Select the TFI 20 when system design requires protection against short-duration high-voltage transients on DC power lines. It is suitable for applications where space constraints favor a DIP-24 footprint. Ensure the input voltage range of the connected DC/DC converter falls within the filter's operational limits of 43 VDC to 160 VDC for proper clamping functionality.

Power Line Filter Modules Part Context

The TFI 20 belongs to the TRACO Power TFI series of EMI filter circuits and power line surge filters. This series includes variants with different power ratings, such as the TFI 150 and TFI 300. These components are engineered to provide robust transient suppression for sensitive electronic equipment in harsh electrical environments.

Power Line Filter Modules Replacement Considerations

Publicly confirmed substitute part numbers for the TFI 20 were not identified in available documentation. Verify compatibility with existing circuit designs if considering alternative surge protection modules from other manufacturers.