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July 1997

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Mon, 21 Jul 97 16:24:07 PST
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     I am more familiar with test than board manufacture and would welcome 
     an answer to a simple question.  The quality of the connection depends 
     on a number of characteristics of a reflow oven - pre-heat, 
     temperature and time in the oven. CORRECT?
     
     If so, is there something I can attach to boards as they go through 
     the system to ensure that the settings are correct for the particular 
     boards?  I am thinking of a substance that changes characteristics, 
     say colour, at a rate depending on the temperature.  We manufacture 
     small quantities but large variety and thus the settings are 
     potentially needing changing regularly.
     
     I want to eliminate faults before I have to test.  I would normally 
     ask the in-house expert but he is taking a well earned rest.
     
     Thanks in advance.
     
     Richard Philp,
     
     Test Technologist
     
     Matra BAe Dynamics
     

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