Bourns has released the model PTVS3 series of high-current bidirectional TVS diodes designed for use in high-power DC bus clamping applications.

These devices offer bidirectional port protection meeting IEC 61000-4-5 8/20 μs current-surge requirements and are RoHS compliant. When compared to competing MOV technology, the use of silicon technology in the Power TVS products provides a lower clamping voltage under surge, greater performance stability, and increased reliability.

The SMD package provides a 20% reduction in peak clamping voltage compared to the equivalent through-hole device because of its lower lead inductance. The result is reduced electrical stress on the protected circuitry. In addition, assembly should be simplified and costs can be reduced by eliminating the extra design step in cases where the Power TVS diode is the only through-hole component on the printed circuit board.

These devices exhibit an excellent surge response versus temperature; the typical maximum surge current at 150°C exceeds 70% of their rated value at 25°C.

Features

• 58 V or 76 V standoff voltage
• Very-high-surge-current protection (3 kA at 25°C)
• Excellent surge performance versus temperature
• RoHS compliant

Applications

• Exposed AC/DC power supplies (in wireless base stations, and more)