Thanks to all for comments/suggestions - we will pass on your thoughts to
the customer.
Regards,
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.
-----Original Message-----
From: joyce [mailto:[log in to unmask]]
Sent: 12 September 2003 16:51
To: [log in to unmask]
Subject: Re: [TN] LED Soldering Query
Peter, is the board double side or single side? If it is single side,
you can use conduction reflow (provide the thing is not too big). And
there are other ways too....but if it is double side, conduction may
have problem....
jk
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike McMonagle
>Sent: Friday, September 12, 2003 10:16 AM
>To: [log in to unmask]
>Subject: Re: [TN] LED Soldering Query
>
>
>Bill,
> Doh! An excellent idea, we've got one that we use for
>a variety of soldering/desoldering tasks. They make tips for
>the tool with two spaced air outlets for chip components,
>could probably find one stock with the right spacing. They
>also have a holding stand that fixes the tool in a clamp and
>allows you to move up and down in the z-axis to an adjustable
>stop. You could make a simple locating fixture for referencing
>the board to the tool, bring it down into position and use a
>crude (yet effective) method of counting the time cycle
>required (kitchen timer, etc.). If you wanted to get fancy,
>you could set it up with a air cylinder, footswitch and cheap
>PLC to control the z-axis and the cycle time....
>
>Mike
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Kasprzak,
>Bill (sys) USX
>Sent: Friday, September 12, 2003 8:41 AM
>To: [log in to unmask]
>Subject: Re: [TN] LED Soldering Query
>
>
>Peter;
>
>Any thoughts on using a Haako hot air tool? I'm sure with a
>little operator technique you could solder the parts without
>damaging the part or causing spatter from solder paste.
>
>Bill Kasprzak
>Moog Inc, Electronics Process Engineering
>
>
>-----Original Message-----
>From: Peter Swanson [mailto:[log in to unmask]]
>Sent: Friday, September 12, 2003 4:57 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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