Question on opening a CPU chip as a microscopic sample

[Peng Xi-2]

Dear all,

    I wish to peel off an Intel 586 CPU chip as a microscopic sample. Previously I found that it is quite easy to open a Cyrix one with a screw driver; but when I try to open this 586 chip I failed once. The top was totally ruined (see Fig. 1 Right). Now I still have another good one handy, could you please let me know how should I do to open it? It seems that the top of it is made of silicon, when I try to open it with a small screw driver, a crash is shown (see Fig. 1 Left).  The picture is at: http://xipeng.c-sight.org/CPU_question.htm

     Thank you!

--
Sincerely,
Peng Xi
Associate Professor
Institute for Laser Medicine and Biophotonics
Shanghai Jiao Tong University
800 Dongchuan Rd.
Shanghai 200240, China
Tel: [phone]
http://biophotonics.sjtu.edu.cn/xipeng

[Bill Miller-3]

you need to de-capsulate the device - see http://www.nisene.com 

On Tue, Jun 2, 2009 at 5:33 AM, Peng Xi <[hidden email]> wrote:

Dear all,

    I wish to peel off an Intel 586 CPU chip as a microscopic sample. Previously I found that it is quite easy to open a Cyrix one with a screw driver; but when I try to open this 586 chip I failed once. The top was totally ruined (see Fig. 1 Right). Now I still have another good one handy, could you please let me know how should I do to open it? It seems that the top of it is made of silicon, when I try to open it with a small screw driver, a crash is shown (see Fig. 1 Left).  The picture is at: http://xipeng.c-sight.org/CPU_question.htm

     Thank you!

--
Sincerely,
Peng Xi
Associate Professor
Institute for Laser Medicine and Biophotonics
Shanghai Jiao Tong University
800 Dongchuan Rd.
Shanghai 200240, China
Tel: [phone]
http://biophotonics.sjtu.edu.cn/xipeng

--
Bill Miller
860-672-0068
[hidden email]