Thanks Richard. Thought of this, of course, but it will somewhat depend on
the finish on the terminations and the board. Silver loaded adhesives may
not give a reliable enough bond to tin/lead finishes.
Peter
--
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Peter Swanson [log in to unmask]
INTERTRONICS http://www.intertronics.co.uk
Tel: +44 1865 842842 Oxfordshire, England
INTERTRONICS is dedicated to providing quality material,
consumable and equipment solutions to high technology
assembly industries, with the highest levels of technical
support and customer service.
-----Original Message-----
From: Richard Brennan [mailto:[log in to unmask]]
Sent: 12 September 2003 10:52
To: [log in to unmask]
Subject: Re: [TN] LED Soldering Query
Peter
Look at the possibility of using conductive adhesive after reflow.
Regards
Richard Brennan
Manufacturing Support Manager
Health & Safety Manager
Aerial Facilities Ltd
Aerial House
Asheridge Road
Chesham
Bucks
HP5 2QD
01494 777000
Direct line
01494 777052
[log in to unmask]
See us at www.aerialfacilities.co.uk
-----Original Message-----
From: Peter Swanson [mailto:[log in to unmask]]
Sent: Friday, September 12, 2003 9:57 AM
To: [log in to unmask]
Subject: [TN] LED Soldering Query
We have a customer who is looking at assembling some surface mount LEDs to a
FR-4 board. We are told that the parts will not stand conventional reflow
temperatures (they themselves are made with a LMP solder, and the lens is
temperature sensitive). At this stage, I don't know much more detail.
The query is whether he could print conventional paste, place the devices
and then reflow each joint individually, by using a robot. But a soldering
iron applied the paste will cause spitting, solder balls, etc.
Perhaps a thermode could be applied to the joint and a temperature ramp up
applied, which will safely reflow the paste, if such a thing exists and can
be mounted to a robot.
I would be interested in general thoughts on how to process these parts.
Maybe not even solder...
TIA,
Peter
--
--------------------------------------------------------
Peter Swanson [log in to unmask]
INTERTRONICS http://www.intertronics.co.uk
Tel: +44 1865 842842 Oxfordshire, England
INTERTRONICS is dedicated to providing quality material,
consumable and equipment solutions to high technology
assembly industries, with the highest levels of technical
support and customer service.
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