High-Voltage Power TVS Devices target AC-DC Converters

Bourns, Inc. today announced a significant expansion of the company's high-voltage Power Transient Voltage Suppressor (PTVS) product line. Offering superior bidirectional port protection from 170V to 430Vs, the nine new PTVS devices are designed to meet stringent IEC 61000-4-5 8/20 µs current surge requirements in a broad variety of ac line and high-power dc clamping applications such as those in exposed ac-dc power supplies in outdoor environments.

An advantage for customers is that PTVS silicon-based technology delivers lower clamping voltage under surge, greater performance stability and increased reliability compared to the capabilities offered from typical competing MOV technology. The Bourns® PTVS products also offer an excellent surge response versus temperature; the typical maximum surge current at 150 degrees C exceeds 70 % of their rated value at 25 degrees C.

“Avoiding damage to the power supply by limiting the peak surge voltage to an acceptable level without short-circuiting the line for an extended period of time is essential to minimize downtime in critical systems and should help avoid costly maintenance calls. Bourns® PTVS diodes are excellent solutions to meet these needs,” said Ben Huang, product line manager at Bourns, Inc. “Our expanded PTVS offering provides the needed protection for ac-dc power supplies used in renewable energy, industrial, telecom and other applications that are exposed to hostile events such as power line surges and indirect lightning strikes.”

The nine new Bourns® PTVS products are RoHS compliant and available now. As a pricing reference, the Bourns® Model PTVS6-430C-TH is priced at $ 72.60 each in 10 piece quantities.