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Humidity & Temperature Range on SMT SHopfloor

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Pp

#70491

Humidity & Temperature Range on SMT SHopfloor | 23 August, 2013

Can anybody help & confirm the Humidity & Temperature Range to be maintained on SMT SHopfloor according to the IPC standard & its IPC standard number. Also the ways to compensate the humidity if its out of range; low cost / natural method.

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#70497

Humidity & Temperature Range on SMT SHopfloor | 23 August, 2013

This is very interesting question. I would think that the temp range will be defined by your machine manufacturers, not by IPC. PCB and electronic parts can handle broad temperature range. Most machines guarantee accuracy in the range (10-30)Degrees C ...and most people too.

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#70501

Humidity & Temperature Range on SMT SHopfloor | 23 August, 2013

I would think the two main issues would be:

1)humidity too low affecting static control issues. 2)humidity too high affecting moisture sensitive components.

Otherwise I agree with Evtimov, whatever equipment/personnel can handle.

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Pp

#70520

Humidity & Temperature Range on SMT SHopfloor | 26 August, 2013

For Machine's we can go with the Machine spec, but what about the SMT assembly process. There would be a defined / suggested Temp & Humidity range to get best O/P.

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#70528

Humidity & Temperature Range on SMT SHopfloor | 26 August, 2013

Your stencil printing process is probably the most critical process in SMT. The paste I'm using states the best environment is with a temperature of 20-25C and humidity of 35-60% RH. Your paste may vary. We've run down to 10-15% RH with no measurable increase in defects.

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Pp

#70568

Humidity & Temperature Range on SMT SHopfloor | 29 August, 2013

Thanks to all, Is there a natural way to compensate humidity.

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Pp

#70614

Humidity & Temperature Range on SMT SHopfloor | 3 September, 2013

Can anybody suggest the way to compensate humidity if its out of range

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