Best compromise

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Hi all, If you are profiling a pcb that has a wide variet... - Sep 05, 2008 by aj

Without knowing your board, oven or profile, I would suggest... - Sep 05, 2008 by Real Chunks

Try: * IPC-7530, Guidelines for Temperature Profiling for M... - Sep 08, 2008 by davef

#56360

Best compromise | 5 September, 2008

Hi all,

If you are profiling a pcb that has a wide variety of comonpenents with varying temperature sensitivity requirements what do you do?

e.g. 1136 ball BGA with min reflow temp 245 with tsop48 with max reflow temp 235 etc.

rgd's

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Real Chunks

#56361

Best compromise | 5 September, 2008

Without knowing your board, oven or profile, I would suggest working the middle of your profile. Try a slower conveyor speed to increase your soak zone of your profile. This will decrease your delta-T across the board. You may also have to work on your reflow zone(s) a little as well. But start with your soak first and measure results.

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davef

#56392

Best compromise | 8 September, 2008

Try: * IPC-7530, Guidelines for Temperature Profiling for Mass Soldering (Reflow and Wave) http://portal.ipc.org/Purchase/ProductDetail.aspx?Product_code=3f5288fc-b386-db11-a4eb-005056875b22

* http://www.smtinfo.net/Db/_Reflow%20Soldering.html

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