TDK-EPC, a group company of the TDK Corporation, introduces the world’s first* thin-film common mode filter (TCE1210) with both high-speed differential transmission common mode noise suppression and ESD protection in a single component. Mass production is scheduled to begin in April 2010. |
The new filter is the same size as existing TDK common mode filters (1.25 × 1.00 × 0.60 mm³), but using the proprietary thin-film circuit formation and materials technologies, TDK successfully added an ESD suppressor function to the EMI function already present in the internal structure of existing filters. As a result, an additional varistor for ESD suppression is no longer needed. For manufacturers this means a reduction in the number of components and their mounting area, thus contributing to the further miniaturization of mobile devices.
The new filter’s cutoff frequency is 5.0 GHz, the common mode impedance is 90 Ω ±25 Ω, rated current is 100 mA, and ESD immunity complies with the IEC 61000-4-2 international surge standards. In addition, the filter’s low parasitic capacitance has nearly no effect on the impedance characteristic (TDR measurement), making this filter perfect for use with high-speed, high-volume interfaces such as HDMI, USB 3.0, and SATA in consumer electronics applications.
*As of April 2010, according to TDK investigations.
Glossary
EMI: Electromagnetic interference. Refers to interference caused by electromagnetic radiation mainly from electronic devices. EMI suppression is a type of EMC (electromagnetic compatibility) measure.
- ESD: Electrostatic discharge. Surges caused by static electricity can harm semiconductor components and cause electronic devices to malfunction.
- ESD suppressor: A type of electrostatic discharge protection device that prevents damage to and malfunction of circuits caused by static electricity.
- IEC: International Electrotechnical Commission. An international organization established in 1906 that coordinates the standards of various countries in the electrical, electronics, communications, and other fields.
TDR: Time-domain reflectometry.
Main applications
Main features and benefits
Key data
| Type | TCE1210-900-2P-T000 |
| Common mode impedance | 90 Ω ±25 Ω |
| Cutoff frequency | 5.0 GHz |
| Rated voltage (max.) | 10 V |
| Rated current | 100 mA |
| Dimensions | 1.25 × 1.00 × 0.60 mm³ |
