UCD9246: RGC-Package Step model has no Pin1 marking

Johannes Hofmann

Part Number: UCD9246
Other Parts Discussed in Thread: UCD7242

Hello,

The provided file RGC0064B.step is missing a dot marking where the Pin1 is.

Is there a reason why or was it just forgotten?

Thank you

over 4 years ago

0 Qian Chen over 4 years ago

TI__Mastermind 24075 points

Hi Johannes,

Where did you get RGC0064B.step file?

Thanks

Qian

0 Johannes Hofmann over 4 years ago in reply to Qian Chen

Intellectual 270 points

From the product page.

I also saw this missing marking in the 3D file of the UCD7242. So probably there are some others.

Usually I generate the 3D-models with Altium's built-in Footprint wizard, but today I wanted to compare the quality of TI's vs. Altium's 3D-models.

0 Qian Chen over 4 years ago in reply to Johannes Hofmann

TI__Mastermind 24075 points

Hi Johannes,

I will check if I can find someone to work on this issue.

Thanks

Qian

0 Qian Chen over 4 years ago in reply to Qian Chen

TI__Mastermind 24075 points

Hi Johannes,

We don’t include a pin 1 dot on the QFN/SON step model.

The 3D file has a pin 1 chamfer at the bottom of the package.

0 Johannes Hofmann over 4 years ago in reply to Qian Chen

Intellectual 270 points

Hi Qian Chen,

But why?
When I have a PCB in 3D view with all the components in 3D the engineer needs the pin 1 information on TOP of the part.
The edge marking at the bottom is interesting for automated placing as a second verification.

When there is a Pin 1 marking on the real part, why shouldn't it be 1:1 present in the virtual one. Makes no sense to me :(

0 Qian Chen over 4 years ago in reply to Johannes Hofmann

TI__Mastermind 24075 points

Hi Johannes,

Sorry, I don't know why there is no pin1 marking on top, but I will forward your suggestion to the team.

Thanks

Qian

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UCD9246: RGC-Package Step model has no Pin1 marking