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?

over 2 years ago

0 Christodulos Tsongas over 2 years ago

TI__Genius 13095 points

Hello,

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

Thanks,

Chris

0 Far Hung over 2 years ago in reply to Christodulos Tsongas

TI__Expert 7320 points

Hi Chris,

Do we know the substrate pin size for TPD2S300?

Cheers,

Far

0 Christodulos Tsongas over 2 years ago in reply to Far Hung

TI__Genius 13095 points

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

0 Far Hung over 2 years ago in reply to Christodulos Tsongas

TI__Expert 7320 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 over 2 years ago in reply to Far Hung

TI__Genius 13095 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