We run lots of current through some of our PWBs. Let me see if I can take a
photo on that detail for power connections. Extremly tough connections.
/Inge


-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Gary Crowell
Skickat: den 20 september 2007 22:17
Till: [log in to unmask]
Ämne: Re: [TN] Screwing to a PWB

Keystone makes standoff screw terminals that can be soldered to the pcb.
Amp/Tyco has some similar press-fit terminals.  You can get more current
thru the press-fit terminals (no thermal relief on the pads required)

AMP Powertap http://tinyurl.com/35oa5f

Gary Crowell
Micron Technology 

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Bloomquist, Ken
> Sent: Thursday, September 20, 2007 1:52 PM
> To: [log in to unmask]
> Subject: [TN] Screwing to a PWB
> 
> We have some large lugs that we need to screw to a PWB. Several ideas
> have been floated but I'm concerned about torquing against 
> the pads of a
> PTH on a multi layer board.
> 
> This is in a high vibration environment so they need to stay in place.
> Because of the units design the wires cannot be soldered or the lugs
> cannot be soldered or screwed directly to the PWB. They need to be
> elevated on a standoff of some kind. One option was to screw the male
> threaded end of a standoff to the board and then screw the lugs to the
> other side of the standoff.
> 
> It seems like I remember some where in my gorilla bag that screwing
> standoffs or anything else that needs a good electrical path was not a
> good idea. These wires are 16 awg and there are four going to 
> each lug.
> 
> Anybody want to chime in on this?
> 
> KennyB
> 
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