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August 1998

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Subject:
From:
Jerry Cupples <[log in to unmask]>
Reply To:
"TechNet E-Mail Forum." <[log in to unmask]>, Jerry Cupples" <[log in to unmask]>
Date:
Mon, 17 Aug 1998 09:32:21 -0500
Content-Type:
text/plain
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text/plain (65 lines)
Jack, please.

>Info to all:  IPC and JEDEC, joint developers of ANSI/J-STD-020 are in the
>final
>balloting stage of J-STD-020A.  Contact me OFF NET if you would like to
>receive an
>e-mailed copy of this interim final document in Adobe Acrobat .pdf format.
>
>IPC/SMTA Electronics Assembly Expo
>Technical Committee Meetings, Conference, Exhibits
>Providence RI   October 24-29
>More info at http://www.ipc.org
>
>Jack Crawford, IPC Project Manager - Assembly
>2215 Sanders Road, Northbrook IL  60062-6135
>[log in to unmask]      847-509-9700 x 393     fax 847-509-9798
>
>>>> ETS <[log in to unmask]> 08/14/98 12:00PM >>>
>Technet,
>
>After recieving a copy of the Jedec Standard, J-STD-020, I have a question
>that hopefully one of you might answer. The Convection Reflow profile
>requirement is listed as:
>
>Ramp up rate: +6 degrees C/sec. max
>Temperature maintained at 125 degrees C (+/-25): 120 seconds maximum
>Temperature maintained above 183 degrees C: 120 - 180 seconds
>Time at maximum temperature: 10 - 40 degrees C
>Maximum temperature: 220 degrees C (+5/-0)
>Ramp down rate -6 degrees C/sec max
>
>My question is when figuring the time maintained at 125 degrees should one
>only be counting the time actually maintained at 125 degrees or should I
>include time between 100 and 150 degrees C?

Jerry Cupples - [log in to unmask]
Interphase Corporation
13800 Senlac Dr.
Dallas TX 75234
(214) 654-5150
(214) 654-5500 FAX

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