TDK Product Features

Mobile devices such as smartphones and mobile phones and transmitting and receiving systems for base stations are the most important applications among TDK’s high frequency components.
We have the lineups of isolators/circulators as the RF components for industrial and infrastructural use.
These are used for base stations, femtocells, wireless communication systems for business, and cable networks, etc.

A fixed frequency is used for communication between wireless devices.
A circulator transmits the high frequency signal that entered terminal① only to terminal⓶, and the high frequency signal entered terminal⓶ is sent only to the terminal③. In this manner, it transmits only in one fixed direction, and the signals are not transmitted in the opposite direction.
Also, an isolator is a component in which one of the three terminals of a circulator is connected to a termination resistor.

Our circulator/isolator product lineup is available ranging widely from small ones for the first stage to the components that support larger output for the last stage, with variations in frequency, shape and size, terminal structure, specification values, etc.


Dec. 21, 2018
Isolators / Circulators: Product Overview has been released.
Nov. 29, 2018
"Products Conforming to European Union RoHS Directive / Product Information Concerning Revised China RoHS" has been updated.
Apr. 12, 2017
“Classifications of Medical Devices” and TDK Products’ Coverage of Those Classes has been released.
Mar. 12, 2017
Release of "myTDK", our membership-based service
Feb. 15, 2017
RF Components and Modules: The product portal has been renewed.