Dear all,
 
We are producing a conventional board 600x300 mm double sided with 70 pieces of led matrixes with each 7x5 leds.
The soldering  leads are positioned at de bottom of the first and the last row. The problem is that on every produced board 1 or two leds are damaged and those leds are mostly coming from the first or last row.
The maximum soldering temperature for the components is 260deg Celsius with a contacttime of 3 sec.
We are soldering with a temperature of 246deg celsius with a contacttime of 4 sec, which I think should be no problem.
Any suggestions why de leds are damaged??
 
Thanks
 
 

Lon Weffers

Matas Electronics BV  Technisch Directeur  Tel.  +31 499 335050  [log in to unmask] 


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