Bourns TBU®-CA High-Speed Protectors

Bourns TBU®-CA High-Speed Protectors feature low capacitance and MOSFET semiconductor technology to protect against faults caused by AC power cross, short circuits, lightning surges, and induction. These single bidirectional protectors provide an effective barrier between sensitive electronics and surge events. Bourns TBU-CA protectors are ideal for voice / VDSL cards, protection modules / dongles, test and measurement equipment, general electronics, and process control equipment.


  • Superior circuit protection
  • Overcurrent and overvoltage protection
  • Blocks surges up to rated limits
  • High-speed performance
  • Small SMT package
  • RoHS compliant


  • 250Vimp to 850Vimp, depending on model
  • 100Vrms to 425Vrms, depending on model
  • -55°C to +125°C operating temperature range


  • Voice / VDSL cards
  • Protection modules and dongles
  • Process control equipment
  • Test and measurement equipment
  • General electronics
Published: 2010-07-23 | Updated: 2023-04-13