Bourns TBU® High-Speed Protectors (HSPs)
Bourns

The TBU® high-speed protector placed in the system circuit will monitor the current with the MOSFET detection circuit triggering, to provide an effective barrier behind which sensitive electronics will not be exposed to large voltages or currents during surge events at the high speed I/O port such as CAN bus, RS485 and RS232 etc, which is used for Communications – Industrial IoT & Edge Computing. Also, a TBU has excellent High Frequency Characteristics to protect the over current and over voltage issues without causing the S.I. issues.
Bourns TBU® High-Speed Protectors (HSPs) are classified as Electronic Current Limiters (ECL) offering surge protection for lightning, power induction, power cross, Earth Potential Rise (EPR) or other energy surge condition. TBU series is typically used in interfaces like VoIP, Ethernet, RS-485, RS-232, CANbus, LVDS, Coaxial, etc and assists to pass GR-1089, K.20/45/21 standards.
Bourns TBU® Circuit Protection Devices for use in RS-485 communication interface applications and AISG (Antenna Interface Standards Group) modem protection. The block transients in nanoseconds through a current-disconnecting mechanism instead of diverting or shunting the surge to ground. These high-speed surge protection components are designed to protect against faults caused by short circuits, AC power cross, induction, and lightning surges. Bourns TBU Circuit Protection Devices are resettable for full functionality after multiple fault events and ideal for telecommunications, industrial, and data communications systems.
Features
- Superior circuit protection
- Overcurrent and overvoltage protection
- Blocks surges up to rated limits
- High-speed performance
- Small SMT package
- Agency listing:
- RoHS* and AEC-Q101 compliant**
Applications
- CANBUS surge protection
- RS485 surge protection
- Short circuit protection
Key Components
- TBU-CA-Q series
- TBU-DB-Q series
Benefits
Fast reaction/current limiter/low capacitance protector
Related Products/ Solutions
Protect against faults caused by short circuit, AC power cross, inductor and lightning surges.