
Bourns TBU-RS055-300-WH Dual-Channel High-Speed Protector
Bourns TBU-RS055-300-WH Dual-Channel Bidirectional Protectors are TBU-RS high-speed devices for use in RS-485 communication interfaces. Bourns TBU-RS055-300-WH include a 550V maximum impulse voltage and 250V maximum RMS voltage. This Transient Blocking unit overcurrent and TVS overvoltage protector is an integrated solution that aids compliance to IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT) and IEC 61000-4-5 (Surge) standards. TBU-RS055-300-WH takes up less than half the board space of a discrete solution.Features
- Dual-channel protector for RS-485 interfaces
- Aids compliance to IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Surge) standards
- Fast protection response time (1μs)
- RoHS compliant
Applications
- RS-485 interface surge protection
- Antenna Interface Standards Group (AISG) modem protection
Specifications
- Dual bidirectional
- 500V maximum impulse voltage
- 250V maximum RMS voltage
- 300mA current trigger levels
- 1μs trigger time
Functional Block Diagram

Additional Resource
Publicado: 2020-06-05
| Actualizado: 2022-03-11