Hi Carey -
     
     Please furnish some additional info - 
     
     -how thick is the PWB?
     
     -how big is the PWB?
     
     -how many internal layers (signal, ground, etc)?
     
     -how heavily populated and what's the component mix (big QFPs?)?
     
     -what equipment are you using - how much preheat do you have?
     
     -what generic flux type are you using(low residue, water soluble etc)?
     
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]
     


______________________________ Reply Separator _________________________________
Subject: Soldering Profiles
Author:  [log in to unmask] at ccmgw1
Date:    1/29/97 6:56 PM


     
     
     
     
We are experiencing problems with a Hewlett Packard PIN diode component 
during wave soldering
The HP part is a HSMP-3810 in low profile SOT-23 package (marking EOL) If 
the component is Hand soldered it performs to it's specifications. If it is 
IR re-flowed the part suffers form a performance degradation (not complete 
failure)
HP has refused ( is either unwilling or unable) to provide a preferred 
soldering profile for this part
Has one experienced this problem with other low profile SOT-23 type device, 
or knows of a IR profile that can be safely used with this part.
     
Regards
     
Carey Ritchey
     
     
*************************************************************************** 
* TechNet mail list is provided as a service by IPC using SmartList v3.05 * 
*************************************************************************** 
* To unsubscribe from this list at any time, send a message to:           * 
* [log in to unmask] with <subject: unsubscribe> and no text.        * 
*************************************************************************** 
* If you are having a problem with the IPC TechNet forum please contact   * 
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      * 
***************************************************************************
     

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to:           *
* [log in to unmask] with <subject: unsubscribe> and no text.        *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************