DKFP-B21B-D439

Common Mode Chokes Overview

The DKFP-B21B-D439 is a current compensated noise suppression choke manufactured by Schurter. It features through-hole mounting and operates within a temperature range of -40°C to +125°C. Key electrical parameters include an inductance of 39 mH, a maximum DC current rating of 400 mA, and a typical DC resistance of 1.286 ohms. The component has a self-resonant frequency of 150 kHz and physical dimensions of 18.5 mm length, 18 mm width, and 13 mm height.

Common Mode Chokes Feature Summary

• Provides magnetic compensation for noise suppression applications
• Designed for through-hole PCB mounting
• Operates reliably across extended industrial temperature ranges

Common Mode Chokes Applications

• Industrial equipment noise filtering
• Current compensated choke circuits
• Common mode noise suppression

Common Mode Chokes Procurement Notes

Verify the specific suffix against official Schurter documentation to ensure exact parameter alignment. Confirm RoHS compliance status with the manufacturer prior to integration. Cross-reference the datasheet version to validate operating temperatures and electrical ratings. Ensure mechanical footprint compatibility with existing PCB layouts before finalizing procurement decisions.

Common Mode Chokes Selection Notes

Select this component when a compact, magnetically compensated choke is required for low-current applications up to 400 mA. The high inductance value suits filtering needs where space is limited. Verify that the through-hole package fits the assembly process. Compare thermal performance against ambient conditions to ensure operation remains within the specified -40°C to +125°C range during continuous duty cycles.

Common Mode Chokes Part Context

This part belongs to the DKFP series of current compensated chokes from Schurter. These components are engineered for compact noise suppression in electronic circuits. The series offers various inductance and current ratings to suit different design requirements while maintaining a consistent form factor for standardized manufacturing processes.

Common Mode Chokes Replacement Considerations

The DKFP-B22B-D439 shares similar physical dimensions but differs in current rating and inductance characteristics. Verify electrical equivalence before substitution. No other direct public substitutes are confirmed.