B85321A2405A501

Overview

The B85321A2405A501 is a feed-through capacitor from the EPCOS (TDK Electronics) B85321 series, designed for electromagnetic interference suppression. It features a rated voltage of 250 V AC (50/60 Hz) and 600 V DC. The component has a rated current of 500 A, referenced to a 40 °C ambient temperature, with reduced current values applicable at 400 Hz. The capacitance configuration consists of two lines, each with 2 µF capacitance. This robust construction supports high-current applications requiring effective noise filtering in power systems.

Feature Summary

• Provides high current handling capability suitable for demanding power environments
• Integrates dual-line filtering architecture for comprehensive electromagnetic interference suppression
• Engineered for stable operation under specified thermal conditions

Applications

• Power supply units requiring EMI mitigation
• Battery charger circuits
• Portable electronic device power management

Procurement Notes

Verify the complete part number against official TDK Electronics documentation to ensure correct specifications. Confirm that the 500 A rated current aligns with your system's thermal profile, as derating applies at higher temperatures or frequencies like 400 Hz. Ensure compatibility with the 250 V AC / 600 V DC voltage ratings for your specific circuit design requirements.

Selection Notes

Select this component when high current capacity and effective EMI filtering are required in compact feed-through configurations. Consider the thermal environment carefully, as the rated current is defined at 40 °C. Evaluate the dual-line 2 µF capacitance structure against your noise spectrum needs. Ensure the physical mounting style matches your enclosure constraints.

Part Context

This component belongs to the B85321 series of feed-through filters manufactured by EPCOS, now part of TDK Electronics. These components are engineered for robust electromagnetic compatibility in industrial and commercial power applications. The series utilizes specialized internal structures to handle significant electrical loads while maintaining signal integrity through effective noise attenuation.

Replacement Considerations

Consult official TDK Electronics substitution guides for verified alternatives. Ensure any replacement maintains the 500 A current rating, 250 V AC / 600 V DC voltage ratings, and dual-line 2 µF capacitance configuration to preserve circuit performance and safety compliance.