FN2090-20-08

Overview

The FN2090-20-08 is a single-phase, two-stage EMI power line filter manufactured by TE Connectivity / Schaffner. It features a rated current of 20 A and a voltage rating of 250 VAC. Designed for chassis mounting with screw terminals, the unit operates within a frequency range of 0 Hz to 400 Hz. Key electrical specifications include a leakage current of 930 uA and a maximum operating temperature of +100 C. The physical dimensions are 94 mm in length, 56 mm in width, and 45.4 mm in height, with a unit weight of 530 g. It holds UL, CSA, and IEC/EN compliance certifications.

Feature Summary

• Multi-stage design providing high differential and common-mode attenuation using chokes with high permeable core material.
• Engineered for noisy applications requiring excellent conducted emission performance and superior thermal behavior.
• Facilitates easy and fast chassis mounting through dedicated mechanical design.

Applications

• Industrial equipment requiring robust EMI suppression
• Medical devices utilizing standard configurations
• Power supply units demanding high attenuation performance

Procurement Notes

Verify the specific terminal type and mounting style against the schematic requirements before ordering. Confirm that the 20 A current rating aligns with the system's continuous load expectations. Ensure the chassis provides adequate space for the specified dimensions and allows for proper heat dissipation given the +100 C maximum operating temperature limit.

Selection Notes

Select this component when high attenuation is required in a compact form factor compared to earlier series like FN2060 or FN2080. Consider the screw terminal configuration if fast-on connectors are not suitable for the assembly process. Evaluate the 930 uA leakage current against safety standards if used in sensitive medical or safety-critical environments where lower leakage variants might be necessary.

Part Context

This component belongs to the FN2090 series, which offers rated currents from 1 to 30 A. The series is characterized by its two-stage architecture designed for challenging electromagnetic interference scenarios. Variants within the family include B types for medical isolation and A types for low-leakage safety applications, alongside optional surge protection versions.

Replacement Considerations

Direct substitutes may include other models within the FN2090 series with matching current ratings, such as FN2090-20-06, provided the terminal interface (Fast-on vs. Screw) is compatible with the existing hardware layout.