FN2090Z-20-08

Overview

The FN2090Z-20-08 is a single-phase, two-stage power line EMI filter manufactured by Schaffner EMC Inc. It features a rated current of 20 A and a maximum continuous operating voltage of 250 VAC at 50/60 Hz, with an operational frequency range from DC to 400 Hz. The unit utilizes screw terminals for connection and is designed for chassis mounting. Key specifications include a leakage current of 930 µA and compliance with UL, CSA, and IEC/EN standards. This model incorporates optional surge pulse protection, distinguishing it within the FN2090 series.

Feature Summary

• Two-stage filtering architecture providing high differential and common-mode attenuation using chokes with high permeability core material.
• Integrated surge pulse protection circuitry for enhanced transient immunity in noisy environments.
• Chassis mount design optimized for easy installation and fast assembly in industrial enclosures.
• High inductivity relative to amperage delivers superior attenuation performance compared to standard form factors.

Applications

• Industrial machinery requiring robust conducted noise suppression
• Power supplies subject to electrical transients and surges
• Medical equipment installations where surge protection is critical
• Electronic systems operating in electrically noisy environments

Procurement Notes

Verify that the specific application requires the integrated surge pulse protection feature, as this distinguishes the Z suffix variants from standard filters. Confirm terminal type compatibility, noting that the -08 suffix typically denotes screw terminals, whereas other suffixes may use Faston connections. Ensure the chassis mounting hole pattern matches the enclosure design prior to procurement.

Selection Notes

Select this component when both high current capacity and transient protection are required in a single stage. The two-stage design offers higher attenuation than single-stage alternatives like the FN2030 series. Consider the physical dimensions and thermal behavior, as the high permeability cores provide excellent thermal stability under load. Verify that the 20 A rating aligns with the system's maximum continuous current requirements.

Part Context

This part belongs to the FN2090 series, which provides multi-stage EMI filtering solutions for single-phase applications. The series supports rated currents ranging from 1 A to 30 A. The Z suffix indicates the inclusion of optional overvoltage or surge pulse protection, while the -08 suffix specifies the terminal configuration. These filters are engineered for noisy applications demanding exceptional conducted attenuation performance.

Replacement Considerations

Standard FN2090-20-08 serves as the base variant without surge protection. For non-surge applications, verify if the standard version meets requirements. Alternative Schaffner models like FN2090-20-06 offer different terminal types (Faston) but lack the specific surge protection of the Z series.

FAQ

What does the 'Z' suffix indicate in the FN2090Z-20-08 model number?

The 'Z' suffix indicates that the filter includes optional surge pulse protection circuitry, providing additional immunity against electrical transients compared to standard FN2090 models.

What terminal type is used for the FN2090Z-20-08?

The '-08' suffix denotes that the filter uses screw terminals for electrical connection, suitable for secure mounting in industrial applications.