Hi James,
Thanks for your reply.
But we have put the plastic bag to pack it
and then seal in the carton box.
Thanks and best regards,
Justin
-----Original Message-----
From: James Liu [mailto:[log in to unmask]]
Sent: Wednesday, January 14, 2009 10:53 PM
To: Asia Committe Task Group Forum; justin
Subject: 答复: [TGAsia] Solderability Issue for Free-lead
Hi Justin,
I think it is because it exposed to air too long
time--six months!
Best Regards,
James Liu 刘春光
Director, Technology & Standardization 技术与标准总监
IPC
上海市长宁区延安西路1088号2303室
Suite 2303，#1088 West Yan'an
Rd., Changning, Shanghai 200052 PRC
Tel: +86 21 5497 3435
Fax: +86 21 5497 3437
MP: +86 136 0133 3491
[log in to unmask]<mailto:[log in to unmask]>
www.ipc.org.cn<http://www.ipc.org.cn>
________________________________
发件人: TGAsia [
发送时间:
收件人:
主题: Re: [TGAsia]
Solderability Issue for Free-lead
Hi All,
Happy New Year!
I am currently facing a problem with poor solderability
and found there was caused by the grease of flux. The solder surface was very
smooth after dipped at first, but we have found some solders surface became
dull and very hardly to soldering by hand solder after a period of time (about
six months). So I wonder why the grease of flux shall curdle the solder surface
because the flux was free-cleaning. Therefore, which expert could share the
experience to me?
Thanks in advance! All the best for 2009!
Justin
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