And anyway... it depends. Machine insert vs. hand insert and throw in
solder process. Quick and uncomplicated isn't easy when it depends and the
units are off by a factor of 10 or so.
-Chris
Bruce D Stilmack
<[log in to unmask]> To: [log in to unmask]
Sent by: TechNet cc:
<[log in to unmask]> Subject: Re: [TN] FW: [TN] Component
Lead to Hole Clearance
12/14/2005 04:45 PM
Please respond to TechNet
E-Mail Forum; Please
respond to stilmack
I'm with Phil. I've been trying to figure out the units
Bruce Stilmack
GDLS-TO Manufacturing Engineer
(850) 574-4773
[log in to unmask]
"Crepeau, Phil
(Space
Technology)" To
<phil.crepeau@NGC [log in to unmask]
.COM> cc
Sent by: TechNet
<[log in to unmask]> Subject
Re: [TN] FW: [TN] Component Lead to
Hole Clearance
12/14/2005 04:32
PM
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
"Crepeau, Phil
(Space
Technology)"
<phil.crepeau@NGC
.COM>
maybe nobody believed your hole sizes and wire diameters (unless they
are in yards).
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. Hernandez
Sent: Wednesday, December 14, 2005 1:24 PM
To: [log in to unmask]
Subject: [TN] FW: [TN] Component Lead to Hole Clearance
I did not get any responses the FIRST time perhaps the SECOND time is a
charm.
Victor,
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor G. Hernandez
Sent: Tuesday, December 13, 2005 8:05 AM
To: [log in to unmask]
Subject: [TN] Component Lead to Hole Clearance
Fellow TechNetters:
Can someone shared their experience with calculating lead to hole ratio
as per IPC-2222 Figure 9-3?
I have a cross section in which I suspect the lead diameter cause
insufficient solder fillet.
I need a QUICK GUIDE to determine this relationship without being
complicated.
Rough drill size: 0.000376
Plated barrel size: 0.003432
Lead size: 0.002047
Victor.
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