I agree with Doug, but the particle count in the Class 3 assembly area should be kept relatively low. You do not want a bunch of cardboard boxes, etc, stored in the area or you will have some issues with fibers in the solder. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls Sent: Thursday, October 08, 2015 10:25 AM To: [log in to unmask] Subject: Re: [TN] Clean room I would agree with what Gregg has written, but want to stress that you do NOT need a clean room facility to make IPC Class 3. We do almost all class 3 work and the only cleanroom stuff is in our microelectronics assembly rooms. A generally clean workplace suffices for most everything. Doug Pauls Principal Materials and Process Engineer Rockwell Collins On Thu, Oct 8, 2015 at 10:05 AM, Gregg Owens < [log in to unmask]> wrote: > J-STD-001F Has some basic requirements in Section 4. For class 3: > > 4.1 ESD Mfg shall establish and implement a documented ESD control > program per ANSI/ESD-S20.20 or otherwise specified. > 4.2 Cleanliness and ambient environments in all works areas shall be > maintained at levels the prevent contamination or deterioration of > tools, materials and surfaces to be soldered or conformally coated. > Eating, drinking, and/or use of tobacco products is prohibited in the work area. > 4.2.1 Environmental Controls: Should (no requirement) be enclosed, > temperature and humidity controlled, and maintained at a positive > pressure 4.2.2. Temp and Humidity: At 30% or lower, the Mfg shall very > ESD control is adequate. For process control, more restrictive > temperature and humidity may be required. > > For cleanroom applications ISO 14644-1 Clean Room Standards is the > current contractual standard. US FED-STD-209E was cancelled in 2001 > but is still widely used. > > Gregg > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of CANTAGALLO Luigi > Sent: Wednesday, October 07, 2015 10:58 PM > To: [log in to unmask] > Subject: [TN] Clean room > > Hello Technetters. > > Is there an IPC specification which gives the quality levels of > workshops (temperature, humidity, cleanliness) according to the > quality of the assemblies? > For example, assemblies IPC class 3 must be necessarily assembled in > clean rooms or just with control of humidity and temperature? > > Best regards, > > CANTAGALLO Luigi > > [@@ OPEN @@] > > > ______________________________________________________________________ > 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] ______________________________________________________________________ ______________________________________________________________________ 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] ______________________________________________________________________