DR331-474BE

Common Mode Chokes Overview

The Bourns DR331-474BE is a surface mount common mode choke designed for data line EMI suppression. It features a bifilar-wound configuration with an inductance of 470 µH at 100 kHz and a DC resistance of 0.28 Ω. The component supports a maximum current rating of 500 mA and operates within a temperature range of -40°C to +135°C. Its compact dimensions are 7.3 x 5.4 x 4.7 mm, facilitating integration into space-constrained electronic designs.

Common Mode Chokes Feature Summary

• Bifilar winding structure optimized for effective common mode noise attenuation
• High thermal stability enabling reliable operation across extended temperature ranges
• Compact surface mount footprint suitable for high-density circuit board layouts

Common Mode Chokes Applications

• EMI suppression in high-speed data transmission lines
• Signal integrity protection in communication interfaces
• Power filtering for sensitive electronic circuits

Common Mode Chokes Procurement Notes

Verify the specific datasheet version to confirm electrical tolerances and physical dimensions before integration. Ensure compatibility with automated pick-and-place equipment regarding package size. Cross-reference manufacturer part numbers to avoid confusion with similar series components that may have different current ratings or inductance values.

Common Mode Chokes Selection Notes

Select this component when designing systems requiring robust common mode noise rejection for data lines. Consider the 500 mA current rating and 0.28 Ω DC resistance to ensure minimal signal loss and thermal management within the application constraints. Evaluate the operating temperature range against environmental conditions.

Common Mode Chokes Part Context

This component belongs to the Bourns DR331 series of surface mount data line chokes. The series is engineered for applications demanding efficient electromagnetic interference suppression in compact form factors. The DR331-474BE specifically targets scenarios requiring precise inductance characteristics for signal line protection.

Common Mode Chokes Replacement Considerations

Consult official substitution guides for verified alternatives. Generic equivalents may not match the bifilar winding geometry or thermal specifications required for original design performance.