手机大厂的ＥＳＤ经验总结

taotao123 · 发表于 2008-2-17 12:05:41

手机大厂的ＥＳＤ经验总结，英文写就（不喜英文者勿下），共22页，叙述详尽，图文并茂。部分文字如下：
During qualification, there are some ESD problems,
1.  There will be power off when discharging to I/O connector at contact >3.5KV,
2.  There will be power off when discharging to T-flash connector at air >7KV,
3.  There will be communication lost and can’t read SIM card when discharging to keypad, T-flash connector and gap at air >7KV.

For these problems, the solutions are as follow,
Problem 1 improvement:
Increase the GND area of the battery’s cathode by scraping the green painting near the cathode to expose more GND and linking the cathode with the exposed GND by solder.
After improvement, it is OK for ESD at contact 6KV on the I/O connector.

Problem 2 improvement:
Link the metal panel of the back cover with the SIM card shielding cover by conductive fabric,
After improvement, it is OK for ESD at air 10KV on the position of T-flash connector.

Problem 3 improvement:
Link the metal panel of the back cover with the SIM card shielding cover by conductive fabric,
After improvement, it is OK for ESD at air 10KV on the position of keypad, T-flash connector and gap.

After modifications above, the mobile can pass air 10KV and contact 6KV.

【文件名】:08217@52RD_我做过的几个项目ESD解决问题的方法.part1.rar
【格　式】:rar
【大　小】:1024K
【简　介】:
【目　录】:
[UseMoney=3]

wave_tracy · 发表于 2008-2-18 14:26:48

thanks and that material is very good

taotao123 · 发表于 2008-2-18 15:55:45

谢谢鼓励！以后有好的资料会免费和大家共享，这次是因为手头比较紧，不过这个资料应该是超值的。

luiyarch · 发表于 2008-2-18 23:01:14

no money

sunshine_g · 发表于 2008-2-19 18:47:39

下了好多回，就是下不了，请楼主帮忙！谢谢

tianshui · 发表于 2008-6-17 15:08:37

no money

jasonlu · 发表于 2008-6-24 00:00:13

【文件名】:08623@52RD_08217@52RD_我做过的几个项目ESD解决问题的方法[1].part1.rar
【格　式】:rar
【大　小】:1024K
【简　介】:
【目　录】:

lijiangcom · 发表于 2008-6-24 09:44:57

顶楼上的！

peki · 发表于 2008-6-24 09:56:28

顶Jasonliu！好人！

yuanliz · 发表于 2008-6-25 00:27:51

[em08]支持！！

XQP · 发表于 2008-6-25 07:55:22

支持！！
[em02]

spsonic · 发表于 2008-6-27 16:14:27

ok, 严重支持

xiaotian28 · 发表于 2008-7-7 14:55:20

多谢多谢！

kgzyy1 · 发表于 2008-7-16 17:51:47

[em14]

wguiyong · 发表于 2008-8-31 07:44:04

的确不错，谢谢楼主

wguiyong · 发表于 2008-9-21 16:24:19

谢谢，的确不错

fanwei326 · 发表于 2008-9-27 14:46:29

[em03]

nightfox · 发表于 2008-10-14 16:15:02

look forward to get enough money and study it!

Raining · 发表于 2008-10-16 04:47:42

thank you for you free information

lijianjun · 发表于 2009-8-12 16:29:29

支持面粉的。[em01]

		自动登录	找回密码
密码			注册

[资料] 手机大厂的ＥＳＤ经验总结

本帖子中包含更多资源

本帖子中包含更多资源