PCA9534A: PCA9534ARGTR used Footprint

Allen yang

Intellectual 340 points

Part Number: PCA9534A

The datasheet shows 2 footprints

which one to choose?

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 245710 points

Both are correct; there are two manufacturing sites using different lead frames. You cannot choose when ordering, and might even get both in the same reel.

You have to use a footprint that can handle both pads.

0 Allen yang over 1 year ago in reply to Clemens Ladisch

Intellectual 340 points

This datasheet shows 2 land pattern example

1.45 or 1.68, which one to use

+1 Tyler Townsend over 1 year ago in reply to Allen yang

TI__Mastermind 24143 points

Hi Allen,

These are land pattern examples and can be changed based upon your specific design needs. You could technically go with the smaller land pattern example of 1.45. This would solder on just fine with the RGT0016C. Although slight difference in sizing, the solder joint between the landing and the thermal connection would be sufficient to dissipate heat from the chip.

If you are worried about the mismatch, you can always go with the larger land pattern example to cover both RGT0016A/C drawing areas in full.

Regards,

Tyler

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PCA9534A: PCA9534ARGTR used Footprint