Power Electronics

Transient Blocking Unit Circuit Protects Electronic Systems

Bourns, Inc announced availability of a line of Transient Blocking Unit (TBU) circuit protection devices that block transients using a current disconnecting mechanism rather than diverting or shunting the surge to ground. This blocking technology virtually eliminates latency in the circuit protection design which results in surge protection for sensitive electronic equipment within nanoseconds. TBU devices provide effective, wide bandwidth circuit protection against lightning, power induction, power cross and short circuit events in a wide variety of Ethernet, Voice over IP (VoIP), Very High Speed DSL (VDSL) and Gigabit Passive Optical Networking (GPON) applications. The TBU is also used in industrial, test and instrumentation, sensors, and transportation applications.

The TBU line includes four product families: The P-G series designed for voice protection, P40 for VDSL protection, the P-U series for Ethernet protection and the C series for general electronics protection. The P-G series meets very high surge requirements and prevents arcing and other damage to components. Offering very high bandwidth for VDSL and VDSL2 applications, the P40 TBU products meet rate-reach requirements. The P-U series is intended specifically for Ethernet applications by protecting against both lightning and power cross events. All TBU products are resettable for full functionality after multiple fault events and offer a high bandwidth of 3 gigahertz (GHz). The TBU line exceeds system circuit protection requirements, and they are also a
cost-effective solution that reduces warranty returns.

Bourns' P-G series, P40, P-U series and C series TBU products are available now. As a pricing reference, the C Series products are priced at $0.75 each in 10,000 piece quantities.

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