TECHNET Archives

May 2013

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Condense Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Sender:
X-To:
TechNet E-Mail Forum <[log in to unmask]>
Date:
Fri, 10 May 2013 10:01:48 -0700
Reply-To:
TechNet E-Mail Forum <[log in to unmask]>, "Rivera, Raye" <[log in to unmask]>
Message-ID:
Subject:
From:
"Rivera, Raye" <[log in to unmask]>
MIME-Version:
1.0
In-Reply-To:
Content-Transfer-Encoding:
quoted-printable
Content-Type:
text/plain; charset="us-ascii"
Parts/Attachments:
text/plain (70 lines)
I forgot your second question. The device that counts particles in a clean room actually is called a particle counter. 

Reminds me of the time I asked some one "What is that black bird with the red on its wings?"

Best regards,
Raye Rivera
 
 
QA Manager * Canoga Perkins * 818-678-3872  * [log in to unmask]

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Rivera, Raye
Sent: Friday, May 10, 2013 9:58 AM
To: [log in to unmask]
Subject: Re: [TN] IPC Class 2 Clean room specification

Hi Hermina,

I have never seen an IPC spec for clean rooms. Wikipedia has a good listing of the various specifications for clean rooms. There is a British Standard BS 5295 that defines a Class 2 clean room.

http://en.wikipedia.org/wiki/Cleanroom

In the US we usually use Class 10,000, 1000, 100, 10, etc. A class 10 clean room will have less than 10 particles per cubic meter of air that are greater than .05 micron. The definition is actually a bit more complicated than that, but this is the easy way to remember.

It has been quite some time since I specified a clean room, but a critical thing to understand early on is what particle size will cause a defect in your process. Wafer fabrication operations can be spoiled by half-micron particles or smaller. If you are doing optical assembly or lamination, you may only care about particles larger than 5 microns. The cost to control very small particles is significantly higher.

Also consider clean workstations rather than a clean room. If only one operation needs to be done in a clean environment a single workbench can be much cheaper.


Best regards,
Raye Rivera
 
 
QA Manager * Canoga Perkins * 818-678-3872  * [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Herminia Guevarra
Sent: Friday, May 10, 2013 6:44 AM
To: [log in to unmask]
Subject: Re: [TN] IPC Class 2 Clean room specification

Hello all,

Does anybody know the IPC spec for Class 2 clean room environment?
And what equipment is best to measure/monitor dust particle count?

Please reply.  Thanks.

Herminia
_________________________________________________________________________________________________________
NOT INTENDED AS A SUBSTITUTE FOR A WRITING
NOTHING IN THIS E-MAIL, IN ANY E-MAIL THREAD OF WHICH IT MAY BE A PART, OR IN ANY ATTACHMENTS THERETO, SHALL CONSTITUTE A BINDING CONTRACT, OR ANY CONTRACTUAL OBLIGATION BY PNY, OR ANY INTENT TO ENTER INTO ANY BINDING OBLIGATIONS, NOTWITHSTANDING ANY ENACTMENT OF THE UNIFORM ELECTRONIC TRANSACTIONS ACT, THE FEDERAL E-SIGN ACT, OR ANY OTHER STATE OR FEDERAL LAW OF SIMILAR SUBSTANCE OR EFFECT. THIS EMAIL MESSAGE, ITS CONTENTS AND ATTACHMENTS ARE NOT INTENDED TO REPRESENT AN OFFER OR ACCEPTANCE OF AN OFFER TO ENTER INTO A CONTRACT. NOTHING IN THIS E-MAIL, IN ANY E-MAIL THREAD OF WHICH IT MAY BE A PART, OR IN ANY ATTACHMENTS THERETO SHALL ALTER THIS DISCLAIMER.
This e-mail message from PNY Technologies, Inc. (http://www.pny.com) is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

ATOM RSS1 RSS2