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June 2008

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Subject:
Re: Temperature of lead-free for hand soldering
From:
"P. Langeveld" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, P. Langeveld
Date:
Thu, 26 Jun 2008 17:40:13 +0200
Content-Type:
text/plain
Parts/Attachments:
text/plain (60 lines) 
If you solder components by hand with 320dC, you also solder lead free
with 320dC. Otherwise you can thermally damage the component or the
adhesion of solder lands from the board.
Rule of thump: manual solder time is maximum 5 seconds, the solder
have to be liquid for at least 3 seconds before it solidifies..
If you cannot solder within this window, increase the thermal mass of
the solder tip. NEVER increase the iron tip temperature.

Success!

Peer Langeveld
Consultant Soft Soldering Processes
5502 VH 8 NL



2008/6/26 Luan Nguyen <[log in to unmask]>:
> Dear All,
> We have a question about set temperature for hand soldering. We were using Hakko FM-202.
> - For tin lead, we set 320 C degree
> - For lead-free, we plan to set 380 C degree. However, we can not find any standard (IPC, J-STD) mention to set temperature. We refer some documents, experience sharing that temperature range is from 370 C degree to 425 C degree. Moreover, in there is also mention as "> 80 W hand soldering is always OK" that effect us due to Hakko FM-202 have power consumption of soldering iron is 70W.
>
> Please help me any reference, any document, any advice.
>
> Thanks and best regards,
>
>
> ***************************
> Nguyen Hoang Luan
> QC&Training Supervisor
> Spartronics VietNam Co, Ltd.
> No.3, Street No.6, VSIP
> Th An Dist., BDuong Prov., VN
> Tel: (84-650) 784 890
> Fax: (84-650) 784 891
> Mobile: 090.3.667448
> Email: [log in to unmask]
> ***************************
>
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