Temp - 70 +/- 4 Humidity - 30-75% RH >>> Juanita Zeinstra <[log in to unmask]> 01/16/98 12:30pm >>> We are located in Grand Rapids Michigan. We are moving across town to a new building which is being renovated to suit our needs. With a tight budget getting tighter, there is a somewhat political and emotional contest in the making. By title our assembly facility will be called the "Engineering Manufacturing Development Center (EMDC)". Engineering activity is located in Grand Rapids, Mi. while production manufacturing will be located in Clearwater, Fla. The EMDC will have process development, low volume and transition responsibilities. We assemble primarily SMT boards but there is some thru-hole and mixed technology as well. Processing in the EMDC includes wave, vapor phase, and hand soldering. IR, convection ovens or even new technolgy soldering may be added later, as well. Our boards are primarily rigid polyimide boards but flex and rigid-flex boards are processed occasionally. Thermount boards are being considered for the future. Cu-Invar-Cu and Cu-Mo-Cu stabilizing cores are frequently employed for CTE stabilization. We will be using more and more plastic and commercial parts and less of the ceramic and military grade parts, as is the industry trend. It also goes without saying that expect to track industry trends in technology, components and processing. We are in the business for the long term. We started our operations in GR in the early 1950's and we will have a 20 year lease on our new facility. Our business niche is high technology commercial and military avionics. Our facility size is almost 900,000 Sq.Ft. and the EMDC and circuit card assembly areas could be as large as 15K-25K Sq. Ft. in size. With that as background, the question is as follows; What temperature / humidity requirements would you recommend for the EMDC and assembly areas of our new facility? ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################