What does symbol mean?

alpha

Expert 2530 points

Other Parts Discussed in Thread: 66AK2H12

Dear specialist

What does this symbol indicate?
Does it indicate height from center to point of ball ?

Best regards

0 Senthilkumar Srinivasan over 11 years ago

Hello,

From the above image, the symbol/dimension that you highlighted is the height from the center of the BGA ball to the seating plane.

However, could you share the device part number that you are using ?

Regards,

Senthil

0 alpha over 11 years ago in reply to Senthilkumar Srinivasan

Expert 2530 points

Dear Senthil

Thank you for your prompt reply.

> However, could you share the device part number that you are using ?

The device is 66AK2H12.
If your answer will be changed , please let me know.

Best regards.

0 Senthilkumar Srinivasan over 11 years ago in reply to alpha

Hello,

Thanks for sharing the part number.

My answer remains the same.

Regards,

Senthil

0 alpha over 11 years ago in reply to Senthilkumar Srinivasan

Expert 2530 points

Dear Senthil

Thank you for your reply.

I would like to check the meaning of "seating plane".
In other words is the height from the center of the BGA ball to "board" after mount?

Best regards.

0 Senthilkumar Srinivasan over 11 years ago in reply to alpha

Hello,

Yes, the seating plane means the surface of the PCB.

This is the height from the center of the BGA ball to "board" after mount.

Regards,

Senthil

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