FN2090B-8-06

Overview

The Schaffner FN2090B-8-06 is a single-phase, two-stage EMI/RFI filter designed for chassis mounting. It features fast-on terminals and supports rated currents up to 8 A with a maximum voltage of 250 V AC/DC. The component operates within a frequency range of DC to 400 Hz and includes an inductance value of 8 mH. Designed for noisy applications, it offers high differential and common-mode attenuation using chokes with high permeable core material. The B-type designation indicates the absence of Y-capacitors, making it suitable for medical applications requiring low leakage currents.

Feature Summary

• Two-stage architecture providing very high differential and common-mode attenuation performance
• Medical version configuration (B type) featuring no Y-capacitors for safety-critical environments
• Optimized thermal behavior and exceptional conducted attenuation based on high permeability core materials
• Designed for easy and fast chassis mounting with various terminal options available

Applications

• Medical equipment requiring low leakage current compliance
• Noisy AC and DC power line applications demanding excellent filter performance
• Industrial systems utilizing single-phase power supplies
• Chassis-mounted electronic enclosures requiring compact EMC solutions

Procurement Notes

Verify that the specific part number matches the required current rating and terminal style for your assembly. Confirm the B-type designation aligns with medical or low-leakage requirements, as standard versions may differ. Check for any optional surge protection variants if overvoltage protection is needed. Ensure compatibility with existing chassis mounting hardware and verify regulatory certifications relevant to your target market before finalizing procurement.

Selection Notes

Select this model when high attenuation is required in a compact form factor compared to previous series like FN2060 or FN2080. The B-type variant is essential for applications prohibiting Y-capacitors due to safety standards. Consider the Z-type option if surge pulse protection is necessary. Evaluate the 8 A rating against peak load requirements to ensure adequate headroom. Verify that fast-on terminals suit the wiring harness design.

Part Context

This component belongs to the FN2090 series of multi-stage AC/DC EMI filters from Schaffner. The series is characterized by its ability to handle rated currents from 1 to 30 A while maintaining a consistent compact size across different ratings. It serves as an upgrade path for designs previously using FN2060 or FN2080 series filters, offering improved inductivity versus amperage ratios without increasing physical dimensions.

Replacement Considerations

Direct substitutes include other parts within the FN2090 series with adjusted current ratings, such as FN2090B-6-06 or FN2090B-10-06. Cross-reference with the FN2070 series for similar single-phase chassis filters if current requirements differ. Verify that any replacement maintains the two-stage topology and B-type medical certification if applicable.