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Smallest thin-film common mode filter for high-speed differential transmission applications

Smallest thin-film common mode filter for high-speed differential transmission applications

New Products |
By Nick Flaherty

IoT


TDK has launched the industry’s smallest common mode filter series measuring 0.45 x 0.3 x 0.23 mm.

The TCM0403T-200-2P-T210 and TCM0403T-080-2P-T210 have a differential insertion loss cutoff frequency of 8 GHz or higher and can support transfer speeds up to a maximum of 12 Gbps.

Common mode attenuation, which is an important index for noise countermeasures, has improved in this series compared to conventional products. TCM0403T-200-2P-T210 offers a high common mode attenuation of 42 dB at 2.4 GHz, and TCM0403T-080-2P-T210 products have a high common mode attenuation of 34 dB at 5.0 GHz.

This is achieved with TDK’s proprietary fine patterning for the coil conductor to provide noise control in high-speed differential transmission, as well as high common mode attenuation

The coil conductor pattern is designed using TDK’s proprietary fine patterning, which uses a thin-film production method and applies a technology cultivated through the development of TDK’s magnetic heads. The implementation of this industry’s new smallest size common mode filter will support the miniaturization, thinning, and weight reduction of electronic devices.

To control radiation and exogenous noise in the differential transmission lines that are expected to increase in speed in the future, TDK will continue to develop small-sized thin-film common mode filters and provide services contributing to the quality improvement of wireless communication systems.

Mass production of the product series began this month, June 2023.

Type

Common mode
Attenuation
[dB] typ.

Cutoff frequency
[㎓] typ.

DC resistance
[Ω]/1line

Rated current
[㎃]max.

Rated voltage
[V]

Insulation resistance
[㏁]min.

TCM0403T-200-2P-T210

42 @2.4㎓

8.0

3.0 ± 30%

35

5

10

TCM0403T-080-2P-T210

34 @5.0㎓

15.0

1.2 ± 30%

50

5

10

www.tdk.com

 

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