ESD protection diodes are for USB Type-C connectors

Two groups of devices from Nexperia are optimised for system protection. The TrEOS ESD protection diodes are claimed to have the highest surge robustness and lowest trigger voltage.

Nexperia has optimised its TrEOS ESD protection diode series for use with USB Type-C interfaces. The new USB3.2 standard introduces an optional capacitor at the Rx inputs, prompting Nexperia to introduce one group of devices that delivers high surge robustness for positioning between the connector and capacitor. A second has a low trigger voltage for placement between capacitor and the system chip.

Nexperia’s TrEOS ESD protection technology uses active silicon-controlled rectification to deliver low capacitance (down to 0.1 pF); extremely low clamping (dynamic resistance down to 0.1 Ohm) and very high robustness against surge and ESD pulses (up to 20A 8/20 micro seconds for very fast datalines). Turn-on time is also very fast at about 0.5 nano seconds and devices can withstand up to 30 kV contact discharge, exceeding IEC 61000-4-2, level 4.

The TrEOS devices for use in applications where the protection is placed before the capacitor are now available with what is claimed to be industry’s leading peak pulse current ratings of 9.5, 15 and 20A for 8/20 IEC61000-4-5 conditions.

Similarly, TrEOS devices for use after the capacitor deliver industry-leading performance, featuring the lowest trigger voltages (Vt1), down to 4.3V. These features are also relevant for USB Type-A and MicroUSB interfaces.

The two families ensure that end customers can enjoy data speeds of up to 20Gbit per second and up to 100W charging, says Nexperia. The two TrEOS protection families support every protection strategy around the new USB3.2 Rx capacitor for protecting sensitive transceivers against possible fault conditions, it adds.

TrEOS protection diodes are packaged in the 0603 form factor, which offers advantages such as being a very compact, very robust DSN0603-2 (SOD962-2) package and include the lack of bond wires, which eliminates another failure mode and results in the lowest inductance for fastest protection. This package is very popular for mobile and computing applications. Further space-saving packages are also available, adds Nexperia.

The company provides comprehensive parametric USB protection search guide to help designers choose the optimal device for their system configuration.

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