Reparability and max PCB thickness of pressfit package (CAB6R0A23GM4T)

Prathik

Hello,

I am going to use the CAB6R0A23GM4T in a DC-DC converter prototype and I need to a few things.

1. How reparable is the pressfit package? If I damage the power module during testing, how easily can I replace it without damaging the pads on the PCB?
2. Would it be advisable to make the pads a bit wider so that I can simply solder the pins to the board to improve reparability during testing?
3. What is the maximum allowable PCB thickness for this package?

Thanks,

Prathik

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.

CFlack

Prathik,

1. "Products with PCBs that are designed following the above standards may have a WolfPACK™ series module pressed in up to three times. After the third module is removed from the PCB, it is recommended that the PCB be replaced." (PRD-02302: Wolfspeed WolfPACK Mounting Instructions & PCB Requirements, page 7). Please note that modules that have been pressed out should not be pressed in again. I would recommend ensuring your prototype can be reasonably disassembled and reassembled so you can get to the module easily and, should you have to replace a module, I would also check the circuit board for any damage before pressing in another module.
2. Larger holes for soldering the pins are ok in initial prototypes, but we don't recommend it for production. If you choose to solder, then use >1.25 mm min hole size to ensure the pins have space to fit. A no-clean flux is recommended to prevent ionic contamination as the module is not hermetically sealed.
3. "Note that the press-fit pins are designed to be inserted into a PCB with a maximum thickness of 2 mm. Exceeding the maximum PCB thickness will hinder the ability for the module to be pressed out using the recommended procedure." (PRD-02302: Wolfspeed WolfPACK Mounting Instructions & PCB Requirements, page 6).

Please let us know if you have further questions. Thanks!

Prathik

Thank you.