There is no percentage. Pinholes are acceptable providing that the solder 
connection meets the minimum requirements for wetting action in table 4-1.

In other words if there are so many pinholes that the solder volume is 
reduced below what table 4-1 specifies, it is nonconforming.


****************************************************
Jon Holmen
Technical Project Manager
IPC
2215 Sanders Road
Northbrook IL  60062-6135
Phone (708) 509-9700 ex329
Fax   (708) 509-9798
e-mail  [log in to unmask]
*****************************************************


On Thu, 28 Sep 1995, Richard Boerdner wrote:

> To clarify IPC-A-610A Section 4.2 Table 4-1. We are unclear on what 
> percentage of pin holes are allowable on supported holes.
> 
> Please help !
> 
> Please respond ASAP
> 
> Thanks 
> 
> 
>