Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


SPEZZAFERRI Luca

#10581

How to start a selective soldering process | 16 July, 1999

I'm planning to introduce selective point-to-point soldering for pwb. This is due to various needs: PIHs assy on double IR, for example. I think the most suitable solution is a point-to-point soldering, 'cause we're still having small lot/many type production. I'd be glad to receive some general advices or suggestions about the real effectivness of single-point soldering made by a "nozzle pot". Which clearance around PIH pin? Is it the pwb thickness of some concern?

Thank for help.

Luca

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Glenn Robertson

#10582

Re: How to start a selective soldering process | 16 July, 1999

| I'm planning to introduce selective point-to-point soldering for pwb. This is due to various needs: PIHs assy on double IR, for example. I think the most suitable solution is a point-to-point soldering, 'cause we're still having small lot/many type production. I'd be glad to receive some general advices or suggestions about the real effectivness of single-point soldering made by a "nozzle pot". Which clearance around PIH pin? Is it the pwb thickness of some concern? | | Thank for help. | | Luca | Luca -

Are you ure that you cannot use a "pin-in-paste" process? That has worked well for us. We have looked at selective soldering but have not yet bought anything. I recommend you talk to Air-Vac Engineering, Pillarhouse, and Exselect. One of our engineers has had overall good experience with Pillarhouse while working at another company. Maybe others here can recommend additional equipment suppliers.

Glenn Robertson Alcatel USA

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ScottM

#10583

Re: How to start a selective soldering process | 16 July, 1999

| I'm planning to introduce selective point-to-point soldering for pwb. This is due to various needs: PIHs assy on double IR, for example. I think the most suitable solution is a point-to-point soldering, 'cause we're still having small lot/many type production. I'd be glad to receive some general advices or suggestions about the real effectivness of single-point soldering made by a "nozzle pot". Which clearance around PIH pin? Is it the pwb thickness of some concern? | | Thank for help. | | Luca | Last month I went on a factory visit. One of the mentioned selective solder vendors touted how extensive their equipment was used at this factory. When I aske the ME where the equipment was, his response was "we got rid of them, too much rework..." They're now using selective solder palets on their flow solder machine. Interesting...

I own an AirVac SRM12 that I like a lot but use in primarily for connectors and sockets.

Scott

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Ted Kress

#10584

Re: How to start a selective soldering process | 20 July, 1999

| | I'm planning to introduce selective point-to-point soldering for pwb. This is due to various needs: PIHs assy on double IR, for example. I think the most suitable solution is a point-to-point soldering, 'cause we're still having small lot/many type production. I'd be glad to receive some general advices or suggestions about the real effectivness of single-point soldering made by a "nozzle pot". Which clearance around PIH pin? Is it the pwb thickness of some concern? | | | | Thank for help. | | | | Luca | | | Last month I went on a factory visit. One of the mentioned selective solder vendors touted how extensive their equipment was used at this factory. When I aske the ME where the equipment was, his response was "we got rid of them, too much rework..." They're now using selective solder palets on their flow solder machine. Interesting... | | I own an AirVac SRM12 that I like a lot but use in primarily for connectors and sockets. | | Scott | Hi Luca, I am not sure this is the info your are looking for, but Seho offers automated selective soldering equipment user a robotic arm to grip the board and introduce it to a fluxer and directional mini wave. Check out our web site at www.seho.de for more info. If you like give us a call and we'll send you a video CD. Thanks, Ted

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