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Bourns TVS diodes designed for AC, DC power line apps

30 Jan 2014

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Bourns has introduced high-power TVS diode models in SMD packaging for use in AC and DC power line applications. The models, PTVS15-058C-SH and PTVS15-076C-SH, include high current bidirectional port protection meeting IEC 61000-4-5 8/20µs current surge requirements and are RoHS compliant. The company says the new models offer improved performance stability and reliability.

Designed using advanced silicon technology, Bourns' new devices deliver lower clamping voltage under surge compared to metal oxide varistor (MOV) technology. The SMD package provides a 20 per cent reduction in peak clamping voltage compared to an equivalent through-hole device because of its lower lead inductance. The result is reduced electrical stress on the protected circuitry. Additionally, the SMD package simplifies assembly and can reduce costs by eliminating the extra design requirements in cases where the power TVS diode is the only through-hole component on the printed circuit board.

"Bourns' power TVS diodes are becoming increasingly popular because they provide robust circuit protection against power line surges and indirect lightning strikes in AC and DC power supplies used in telecom and other exposed applications," said Ben Huang, Semiconductor Product Line Manager at Bourns. "We designed these new models with specific packaging technology giving our customers the benefit of a highly reliable solution that meets the growing protection demands of today's high power applications."

Bourns' new power TVS diode models also demonstrate good surge response versus temperature, with a maximum surge current rating at 150°C, which is 70 per cent of their rated value at 25°C. Both models provide high surge current protection with a peak pulse current rating of 15 kA. The model PTVS15-058C-SH features a 58 V standoff voltage, while the model PTVS15-076C-SH has a 76 V standoff voltage.

The models PTVS15-058C-SH and PTVS15-076C-SH are priced at $19.70 each in 10-piece quantities and $17.50 each in 500-piece quantities, respectively. Both models are currently available.

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