Choose your laminate carefully. Lower grades of FR4 and PVC insulation do ugly things at that temperature, crispy critters . Karen Tellefsen - Electrical Testing Alpha / 109 Corporate Blvd./ S. Plainfield, NJ 07080 [log in to unmask] 908-791-3069 From: Graham Collins <[log in to unmask]> To: <[log in to unmask]>, Date: 06/05/2014 08:13 AM Subject: Re: [TN] high temp environment Sent by: TechNet <[log in to unmask]> My understanding is that the device can be expected to see 170 C. regards, Graham Collins Senior Process Engineer Sunsel Systems (902) 444-7867 ext 211 On 6/4/2014 4:51 PM, Stadem, Richard D. wrote: > What temperatures will the device see (both external and internal) in the field? > There are companies that make equipment for monitoring lava temperatures. If they can do that, then the inside of an oil well should be pretty ho hum..... > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins > Sent: Wednesday, June 04, 2014 2:19 PM > To: [log in to unmask] > Subject: [TN] high temp environment > > Hello Technet! > We are discussing an opportunity with a customer who is looking at placing an instrument down-hole in an oil well, hence a high temp environment. Are there any good resources around to help me with this one? Obviously I need high temp solder (Sn96Ag4?), the components will have to be carefully picked, and we will need PWBs that will be OK at high temp (polyimide?). > > I've got some homework to do! :-) > > -- > regards, > > Graham Collins > Senior Process Engineer > Sunsel Systems > (902) 444-7867 ext 211 > > > ______________________________________________________________________ > 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] ______________________________________________________________________ ***** Please note that my E-Mail address has changed ***** ____________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ____________________________________________________________________ ______________________________________________________________________ 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] ______________________________________________________________________