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Bourns Solutions: Circuit Protection
Application Note: Implementing Advanced Circuit Protection Technologies for RS-485 Ports
RS-485-based industrial systems must be capable of operating in very noisy and harsh electrical environments. Reliable circuit protection is a crucial to avoid damage and overload of the system. This application note describes a robust three-stage solution for RS-485 serial device ports. Learn how to apply the combination of Bourns Transient Blocking Unit (TBU®), gas discharge tube (GDT) and transient voltage suppression (TVS) products to meet industry standards and implement highly effective protection against power cross, ESD, EFT and surge pulses.

Downloads   Links
 Design Note: RS-485 Port Protection Evaluation Board 1    RS-485 Evaluation Board 1 Demo Video
 Design Note: RS-485 Port Protection Evaluation Board 2    RS-485 Evaluation Board 2 Demo Video
 3.3V-Supply RS-485 with IEC ESD Protection    3.3V-Supply RS-485 with IEC ESD Protection
     Article: How Much On-Chip Transient Protection Is Enough?
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