Bourns’s latest Transient Blocking Unit (TBU) series of circuit protection devices is designed to provide fast overcurrent protection in a range of trigger currents and voltages.

Designated the TBU-CA series, these are electronic current limiters (ECL) that are triggered by excessive voltage or current.  The devices can be used for protection on Ethernet, RS-485, HART and other ports where dangerous surge and power cross events may occur. 

The circuit protection device series can also be used in telecom applications and provides a barrier to surges while allowing high frequency signals such as VDSL2 to pass through without damage to the circuit. 

The resettable devices also feature lower let-through energy and overshoot protection, which reduces stress on the printed circuit board (PCB) for increased reliability and product life, said the supplier.

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