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September 2006

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Subject:
From:
Dave Dixon <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Dave Dixon <[log in to unmask]>
Date:
Wed, 13 Sep 2006 14:14:02 -0500
Content-Type:
text/plain
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text/plain (101 lines)
DO-160E (RTCA) ???
Regards,
Dave 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of ekalgren
Sent: Wednesday, September 13, 2006 2:00 PM
To: [log in to unmask]
Subject: Re: Temp Testing

Tom,

First find out from your customer if they want a temp cycle test or a
thermal shock test, the primary difference being the rate of temperature
change.

For a thermal shock test, I would recommend using Mil-STD-202, Method
107 as a starting point.  It has some information on soak times at the
extremes, and the number of cycles to perform.

There is another MIL document that encompassed temperature cycling,
including operation at the high and low extremes, but the number escapes
me right now.

Eric Kalgren
Electrical Engineer
Continental Tool and Microwave Company
603-775-5200  ext. 333
[log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tom Parkinson
Sent: Wednesday, September 13, 2006 2:38 PM
To: [log in to unmask]
Subject: [TN] Temp Testing

Hello DN & TN people

We have a customer that wants us to thermally stress a completed PC
assembly (all the SMT & THT parts are soldered in).

The question comes up as to the temp range and time.

They are suggesting:
Room temp to +150F to -40F to room temp.
I'm concerned because of the populated parts (one is a lithium battery).
Not to mention I have no idea on the time periods from extreme to room
temp.

Following this test, an electrical test would be performed.

Any suggestions / Comments??

Thanks

Tom



Tom Parkinson
Quality System Manager - CIT
WinTronics, Inc.
Phone: 724-981-5770 - extension 235

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