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Help me understand some parameters on a datasheet

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Matrix_YL

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help me out datasheet

hi all

Who can explain these parameters represent for what ? such as Φddd Φeee and Φccc.And how to decide the pad diameter for my PCB?

thx in advance
 

VVV

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Re: help me out datasheet

I usually make them equl to the max ball diameter. In your case that would be 0.3mm.
 

Matrix_YL

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Re: help me out datasheet

Hi VVV
At first ,thanks for your reply.
VVV said:
I usually make them equl to the max ball diameter. In your case that would be 0.3mm.

As you said max ball diameter,I think that would be Φb =0.7mm ,Are you sure the pad for my PCB would be Φddd=0.3mm ?

thx in advance
 

VVV

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Re: help me out datasheet

Sorry. You are absolutely right, 0.7mm. I don't know if this is the right way, but that is what I do.
 

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