Dual ESD suppression devices in low-profile package

19 October 2005 Circuit & System Protection

ON Semiconductor has introduced the μESD dual series of high performance, micro-packaged electro-static discharge (ESD) protection diodes. The μESD dual series is designed to protect voltage sensitive components for two lines in applications that demand minimal board space and low profiles, such as cellphones, MP3 players and portable gaming systems.

Offering an alternative to commonly-used multilayer varistors, the μESD dual device can protect two lines in less board space than two 0402 MLVs, while offering other performance advantages by delivering lower clamping voltage, lower leakage, faster response time and ability to withstand multiple ESD strikes without undesirable shifts in electrical characteristics, claims the company.

The μESD dual series is rated to clamp 30 kV ESD transients - per the IEC61000-4-2 standard - in less than 1 ns, and they clamp ESD pulses to less than 7 V. The μESD dual series features the ultra small SOT-723 package (1,2 x 1,2 mm outline, and 0,5 mm profile). The two line protection in one package further reduces required board space and part count.

These ESD protection devices also have an ultra low leakage of 0,05 μA in their off state, saving battery power, while their low capacitance of 35 pF makes them suitable for protecting data lines with data rates up to 10 Mbps.

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