TPD2S300: Layout question

Far Hung

Part Number: TPD2S300

Hi Expert,

Do we know the substrate for the pin size(without ball)?

My customer can't do the via on pad(GND pin) on type 3 PCB, so they plan to reduce the footprint size for layout routing(0.23 to 0.22). Is there any side effect for reduce the ball?

11 months ago

0 Christodulos Tsongas 11 months ago

TI__Expert 8775 points

Hello,

This difference should not make a huge difference 0.01 deviation from recommended value should be ok.

Thanks,

Chris

0 Far Hung 11 months ago in reply to Christodulos Tsongas

TI__Expert 4555 points

Hi Chris,

Do we know the substrate pin size for TPD2S300?

Cheers,

Far

0 Christodulos Tsongas 11 months ago in reply to Far Hung

TI__Expert 8775 points

Believe this will help from the datasheet: https://www.ti.com/lit/gpn/tpd2s300

0 Far Hung 10 months ago in reply to Christodulos Tsongas

TI__Expert 4555 points

Hi Chris,

My customer try to change the land pattern from 0.23 to 0.2, because the GND trace is too weak, they want to reduce the land pattern to 0.2 to increase the GND trace. Do we have any concern for this design? thank you.

Cheers,

Far

0 Christodulos Tsongas 10 months ago in reply to Far Hung

TI__Expert 8775 points

0.3 diameter ball needs a MINIMUM of 0.2 so customer can do this but will be cutting it very close. Helpful chart from IPC spec:

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TPD2S300: Layout question