FN2090BZ-30-08

Overview

The Schaffner FN2090BZ-30-08 is a single-phase, two-stage EMI power line filter designed for chassis mounting. It features a rated current of 30 A and operates at voltages up to 250 V AC or DC across frequencies from 0 Hz to 400 Hz. The component utilizes M4 screw terminals for secure connection and includes optional overvoltage protection (Z type). Designed for medical applications, it incorporates B-type construction with no Y-capacitors to minimize leakage currents while providing high differential and common-mode attenuation.

Feature Summary

• Two-stage filtering architecture utilizing chokes with high permeable core material for superior attenuation performance.
• Medical-grade B-type configuration eliminates Y-capacitors to ensure minimal leakage current safety.
• Integrated optional overvoltage protection (Z type) for enhanced surge pulse resistance.
• Robust chassis mounting design optimized for noisy environments requiring high inductivity.

Applications

• Medical equipment requiring strict leakage current limits
• Industrial systems operating within 0 Hz to 400 Hz frequency ranges
• Applications necessitating integrated overvoltage protection

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm terminal types, insulation classes, and certification status. Ensure compatibility with chassis mounting requirements and thermal management specifications. Confirm that the B-type medical designation and Z-type overvoltage protection align with the system's safety and regulatory needs before procurement.

Selection Notes

Select this model when high current capacity of 30 A is required alongside stringent medical safety standards. The combination of B-type isolation and Z-type surge protection makes it suitable for sensitive electronic environments. Consider the physical dimensions and M4 screw terminal spacing during PCB or chassis layout planning to ensure proper fit and electrical connectivity.

Part Context

This component belongs to the FN2090 series, which offers higher inductivity compared to the FN2060 and FN2080 series within the same form factor. The series provides excellent thermal behavior and conducted attenuation. Variants include standard, medical (B), and safety (A) versions, allowing customization based on specific application leakage current and safety requirements.

Replacement Considerations

Direct substitutes may include other FN2090 series variants with adjusted current ratings or terminal styles. Verify equivalent electrical parameters such as rated current, voltage, and attenuation characteristics. Ensure any replacement maintains the B-type medical isolation and Z-type overvoltage protection if these features are critical to the design.

FAQ

What does the 'B' suffix indicate in the part number?

The 'B' suffix denotes a medical version constructed without Y-capacitors, specifically designed to minimize leakage currents for patient safety compliance.

What is the function of the 'Z' suffix?

The 'Z' suffix indicates that the filter includes optional overvoltage protection (OVP) to handle surge pulses and protect downstream components.

What terminal type is used for this filter?

The FN2090BZ-30-08 uses M4 screw terminals for secure and reliable electrical connections.