CTDLW21SF-121T04

Common Mode Chokes Overview

The CTDLW21SF-121T04 is a two-line common mode choke manufactured by Central Technologies. It features a surface mount design with an impedance of 120 Ohms at 100 MHz and a rated current of 400 mA. The component has a DC resistance (DCR) of 300 mOhm and operates within a temperature range of -40°C to +105°C. Its physical dimensions are 2.05 mm in length, 1.25 mm in width, and 1.2 mm in height.

Common Mode Chokes Feature Summary

• Surface mount wire wound construction for compact circuit integration
• Two-line configuration designed for common mode noise suppression
• Low DC resistance to minimize signal loss in power lines

Common Mode Chokes Applications

• Noise filtering in portable electronic devices
• EMI suppression in USB data lines
• Signal integrity protection in consumer electronics

Common Mode Chokes Procurement Notes

Verify the specific suffix T04 indicates the horizontal package orientation and tape-and-reel quantity as defined by the manufacturer. Confirm that the 400 mA rating aligns with your circuit's peak current requirements. Ensure the 120 Ohm impedance at 100 MHz meets your EMI filtering specifications. Cross-reference the datasheet for exact reel quantities and handling instructions.

Common Mode Chokes Selection Notes

Select this component when space constraints require a small footprint SMD choke. The 400 mA current rating suits low-power applications. Verify compatibility with automated placement equipment due to the horizontal mounting style. Compare impedance characteristics against other frequencies if your application involves signals outside the 100 MHz reference point.

Common Mode Chokes Part Context

This part belongs to the CTDLW21SF series from Central Technologies, which specializes in surface mount common mode chokes. The series offers various impedance values and current ratings tailored for different noise suppression needs. The CTDLW21SF-121T04 specifically targets applications requiring moderate noise attenuation with a compact form factor.

Common Mode Chokes Replacement Considerations

Check for parts with identical 120 Ohm impedance and 400 mA rating. Ensure substitute components match the 2.05 x 1.25 x 1.2 mm dimensions for board compatibility. Verify equivalent DCR and operating temperature range before substitution.