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Solder paste consideration for quotation

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#69740

Solder paste consideration for quotation | 10 July, 2013

Hi,

Generally how much is solder paste cost consideration in overall quotation.

i could gather from the threads on this forum, that solder paste (or raw material) cost in SMT is almost negligible compared to other direct and indirect cost.

Is my understanding correct? if not, then how much is raw material contribution to Assembly cost? is there a formula e.g. solder paste used per lead.

thanks

-Pankaj

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ben

#69742

Solder paste consideration for quotation | 10 July, 2013

the solde paste is not negligible in the quotation of a project.

personally have make this:

-i weight a board without solder paste(with precise material)

-i screen the board with solder paste and i weight the board i divide the weight by the number of pad

with this i have an approximate price by pad and for other projet i multiple this price by number of pad...

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#69743

Solder paste consideration for quotation | 10 July, 2013

thanks ben.

any ball park number for weight of solder paste per pad?

( i understand this will be dependent on AREA of pad, but a rough estimate is good enough for me).

-Pankaj

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#69745

Solder paste consideration for quotation | 10 July, 2013

In general, I've always considered solder paste a part of the overhead costs, along with wire solder, and other consumables utilized on the shop floor.

It's a part of the cost of the assembly, but, I don't calculate it directly as a part of quoting out assemblies.

Cheers, ..rob

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