It is my understanding that "pad" is a board surface
metallization at the end of a barrel (THT doughnuts ) and "land" is a
surface metallization for SMT component( mostly square or rectangle) . 
        Ramon


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete Lymn
Sent: Friday, November 11, 2005 5:55 AM
To: [log in to unmask]
Subject: Re: [TN] What is solder tails

In the context of HASL 'tails' are defects associated with through
holes.
They result when the solder being blown from holes by the leading knife
is deflected forward by the trailing knife; resulting in a small tail
attached to the through hole 'land' or pad.

-----Original Message-----
From: joseph H.smith [mailto:[log in to unmask]]
Sent: 10 November 2005 12:34 PM
To: [log in to unmask]
Subject: [TN] What is solder tails


Dear All,

        What is called "Solder Tails" ?

Adv Thanks
Suganthi

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