Dear Friend,

 

Yes, J-STD-006 is suitable. And QQ-S-571, JIS Z 3282, IEC/ISO-9453 also defined chemical composition and forms for impurity in solder alloy.

 

 

Kind Regards

Peter Deng

==================================

Reliability & Failure Analysis Lab

Electrical & Electronic Division, SGS-CSTC

Office: 0755-2671 0624

Mobile: 138 2876 8267

Website: www.cn.sgs.com; www.sgs.com

________________________________

From: TGAsia [mailto:[log in to unmask]] On Behalf Of George Liu (DMN)
Sent: 2007年6月15日 10:02
To: [log in to unmask]
Subject: Re: [TGA] 关于焊锡成分分析

 

PangMin,

 

Here are the requirements from IPC-J-STD 006: 

3.3 Alloy Impurities Elements not listed as components that make up the composition of an alloy are considered impurities for that alloy. An alloy variation designator shall be used to specify the allowable impurity level of a solder product being offered, in the case of a manufacturer; or the allowable impurity level of a solder product required, in the case of a user. The alloy variation designator will be added to the end of the alloy name and become part of the name (see 6.3).

NOTE: Alloys for barrier-free die attachment applications have a different alloy impurity requirement (see 3.3.1).

Unless otherwise specified, the percentage by mass of impurity elements in alloys shall not exceed the following values. The percentage by mass of impurity elements in variation D alloys shall conform to the requirements in 

3.3.1.

 

 

Ag: 0.10

Cd: 0.002

Pb: 0.10

Al: 0.005

Cu: 0.08

Sn: 0.25

As: 0.03

Fe: 0.02

Zn: 0.003

Au: 0.05

In: 0.10

Sb: 0.05

Bi: 0.10

Ni: 0.01

 

 

The mass percentage of each element in an alloy shall be determined by any standard analytical procedure. Wet chemistry shall be used as the referee procedure.

 

Best Regards, 

George Liu 
Mobile: +86 159 7693 5620 
e-mail: [log in to unmask] 
"Creating Value that Increases Customer Competitiveness" 

________________________________

From: TGAsia [mailto:[log in to unmask]] On Behalf Of Pang, Min
Sent: Friday, June 15, 2007 9:25 AM
To: [log in to unmask]
Subject: [TGA] 关于焊锡成分分析

 

诸位，早上好：

 

向大家咨询一个关于焊锡的金属元素分析的问题。

 

各位是否知道，根据什么标准，对波峰焊的锡池内的焊锡的金属元素都包含什么金属元素？

 

标准是多少？在哪里可以检测到这些金属元素的成分？我公司内用的焊锡Sn/Pb比例为63/37。

 

或者，在您所在的公司内关于这项内容是如何控制的呢？

 

 

thanks a lot.

 

Best Regards!

 

Pang Min (Ms.) 庞敏

 

SV CGQ Quality Department

Siemens VDO Automotive Changchun Co., Ltd 
1981, Wu Han Avenue Changchun P.R.China

130033  


Tel: +86 431 84684557

Fax:+86 431 84684586

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