Dear Vince:

        Here is introduction of IPC-2615 Printed Board Dimensions and Tolerances for your reference .

The definitive standard on printed board dimensioning and tolerancing. Consistent with other IPC printed board standards such as IPC-6012 and IPC-2221. Includes fundamental dimensioning and tolerancing rules; positional, profile, orientation and form tolerances; and detailed geometric symbology. Invaluable to the PCB designer, this document will help manufacturers and board purchasers achieve the most manufacturable board designs. Supersedes IPC-D-300G for fundamental dimensioning and tolerancing rules. 66 pages. Released July 2000.



Thank you & Best regards

NEW：2011年7月北京/10月成都/11月武汉/12月深圳

           IPC2011年“热魔”杯手工焊接竞赛各分赛区期待您的参与！

Paul Zong  宗云龙

[cid:[log in to unmask]]

IPC China



发件人: TGAsia [mailto:[log in to unmask]] 代表 Liu, Jeff

发送时间: 2011年6月7日 13:51

收件人: TGAsia

主题: Re: [TGAsia] Regarding PCB Hole Tolerance



Hi Vince

You can refer to IPC-2615



Jeff Liu

Quality Assure Dept.

Viasystems (Shanghai)

Tel: 86 21 6917 9268

e-Mail: [log in to unmask]<mailto:[log in to unmask]>

________________________________

From: TGAsia [mailto:[log in to unmask]] On Behalf Of Vince Tian

Sent: Tuesday, June 07, 2011 1:29 PM

To: [log in to unmask]

Subject: [TGAsia] Regarding PCB Hole Tolerance



Hi guys,

Could someone kindly tell me which IPC stds showed PCB hole (bare board) tolerance specification?



Thank you!





Vince Tian | Quality Manager

189# Donghui Road,Nordic Industrial Park,Zhenghai Distric,Ningbo China

Phone direct: +86 574 8630 8691 | Phone switchboard: +86 574 8630 8691

Mobile: +86 188 6865 5890 | Fax: +86 574 8630 8601

[log in to unmask]<mailto:[log in to unmask]> | http://www.kitron.com<http://www.kitron.com/>

[cid:[log in to unmask]]











-----Original Message-----

From: TGAsia [mailto:[log in to unmask]] On Behalf Of Billy SHEN

Sent: 2011年6月2日 14:46

To: [log in to unmask]

Subject: [TGAsia] 答复: [TGAsia] 关于元器件仓库的温湿度



Hi Jacky，

    IPC/JEDEC J-STD-033B

《潮湿/再流焊敏感表面贴装器件的处理、封装、运输和使用-包括修订本1》

本标准针对无铅工艺进行了更新。为表面贴装器件制造商及用户提供了对潮湿/再流焊敏敏感的SMD器件的标准化处理、包装、运输和使用方法。这些方法有助于避免由于吸收潮气和暴露在再流焊温度下而造成的损伤，这类操作会降低产量和可靠性。



在《IPC-1601-Printed Board Handling and Storage Guidelines》有提及存储PCB材料的一个推荐环境：



在阴凉干燥的环境下（<23ºC[73ºF]且<50%RH）平放贮存粘结片







NEW：2011年7月北京/10月成都/11月武汉/12月深圳

           IPC2011年“热魔”杯手工焊接竞赛各分赛区期待您的参与！



IPC围脖，实时报道IPC中国动态，欢迎加好友！

搜狐：http://t.sohu.com/ipcchina

腾讯：http://t.qq.com/IPC_China

新浪：http://weibo.com/ipcchina

网易：http://t.163.com/ipcchina



Billy  Shen 沈懿俊

IPC China





-----邮件原件-----

发件人: TGAsia [mailto:[log in to unmask]] 代表 Jacky He

发送时间: 2011年6月2日 14:13

收件人: TGAsia

主题: [TGAsia] 关于元器件仓库的温湿度





各位专家：



想咨询一下，元器件仓库的温度和相对湿度的控制范围一般是多少？参考哪些标准？

望各位分享经验。



Thanks！



Yours sincerely,



Jacky He

QA Dept.

Shanghai SIGRINER STEP Electric Co.,Ltd.

Tel:   +86 21 69926131

MP:  +86 139-184-63683

Fax:  +86 21 69926114

E-mail:[log in to unmask]



______________________________________________________________________

This email has been scanned by the MessageLabs Email Security System.

For more information please contact helpdesk at x2960 or [log in to unmask]<mailto:[log in to unmask]> ______________________________________________________________________





______________________________________________________________________

This email has been scanned by the MessageLabs Email Security System.

For more information please contact helpdesk at x2960 or [log in to unmask]<mailto:[log in to unmask]>

______________________________________________________________________



The information contained in this communication and its attachment(s) is intended only for the use of the individual to whom it is addressed and may contain information that is privileged, confidential, or exempt from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify [log in to unmask]<mailto:[log in to unmask]> and delete the communication without retaining any copies. Thank you.

Translations of this available:

Traduction disponible chez:

Traducciones disponibles en:

Vertalingen beschikbaar bij:

http://www.viasystems.com/dynamic_page.asp

____________________________________________________________________



______________________________________________________________________

This email has been scanned by the MessageLabs Email Security System.

For more information please contact helpdesk at x2960 or [log in to unmask]<mailto:[log in to unmask]>

______________________________________________________________________