Leadless CAN-FD protection diodes for ESD

New Products |
By Nick Flaherty

Nexperia has launched a range of leadless ESD protection devices for CAN-FD applications optimised for manufacturing.

Devices are available in leadless packages with side-wettable flanks that enable AOI tools to be used. Fully AEC-Q101-qualified, the PESD2CANFDx series parts also offer industry-leading ESD and RF performance, and save PCB space.

Nexperia offers silicon-based ESD protection for the CAN-FD bus in both leaded and leadless packages. The DFN1412D-3 and DFN1110D-3 leadless DFN packages with side-wettable flanks occupy 80 percent less PCB space than traditional SOT23 and SOT323 packages as well as improved thermal behaviour due to a larger internal lead frame that includes a heatsink and thermal pad.

The PESD2CANFDx diodes are also very ESD robust delivering excellent system level protection performance. This is because the parts have industry’s lowest clamping voltages of only 33 V at IPP = 1 A and low dynamic resistance of 0.7 Ω. Nexperia ESD protection devices also offer very good RF switching parameters featuring a mixed mode insertion loss of just +20 dB at 300 MHz, leading to excellent signal integrity.

“CAN-FD is an important bus in automotive in-vehicle networks but devices must be protected against ESD,” said Lukas Droemer, product manager at Nexperia. “Another essential requirement for automotive applications is the ability to use AOI. Our new devices in leadless packages meet both these requirements, providing a high-performance alternative to leaded SMD packages. The PESD2CANFDx series fulfils all CAN (FD) specification requirements and exceeds the requirements of AEC-Q101 by two times.”

20 devices are available now in the DFN1412D-3 and DFN1110D-3 packages for automotive and industrial applications including CAN/CAN-FD, FlexRay, SENT and LVDS.

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