Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Vishay Power Metal Strip Flip Chip

Hussman

#25465

Vishay Power Metal Strip Flip Chip | 14 August, 2003

Anyone using these 2010 resistors? We just tried them and they bow like crazy during reflow. Not very good looking. Profile meets manufacturers spec. The part solders and works fine, but I'm a little concerned about putting anything on a board that bends, bows, wiggles, or moves. I'm really concerned when purchasing goes even nuttier and buys more for the wave solder side. Having little solder scoops on the bottom of a board doesn't sound like too much fun.

Any help with this part is appreciated.

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Andrea

#25467

Vishay Power Metal Strip Flip Chip | 14 August, 2003

We use these but we hand solder. The resistor is basically a wire inside the encapsulant. When we noticed the bowing, we tested about 200 that were on different CCA's. They were all fine. If they want to use these under the wave solder, be sure to look under a microscope to be sure solder isn't collecting. I think it will be fine though. Andrea

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Hussman

#25477

Vishay Power Metal Strip Flip Chip | 15 August, 2003

Thanks for the info.

Anyone know if there is a under fill required since this is a flip chip?

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