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Asian BoM costs

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alanambrose:
Hi,

I was looking at some small volume Chinese PCBA quotes recently and noticed that BoM numbers were a bit all-over-the-place. Surprisingly for me, some numbers were higher that Digi-Key USD pricing we pay for prototype quantity parts. This made it harder to compare quotes as I had to figure out what extra margin was buried in the BoM sourcing. I always thought that often the US price is quoted for low volume / discount for higher volume - and that in actual fact the PCBA supplier made a substantial part of their margin on the PCBA deal by sourcing lower cost parts locally.

Anyone have extra insight / experience on this? Either as a customer or supplier?

Alan

eclipse_real:
I am about to get into this myself - just waiting for the end of the national holidays.

I guess I was just thinking of getting quotes from 4-5 Chinese PCBA companies and then comparing. I've read a bunch of posts around here and while there are lot of PCB company opinions, I didn't see a lot of PCBA company recommendations.

Why is it so confusing for you if you have a few quotes? Are you planning to beat them up on some specific components that are higher priced?

My project has an expensive board mounted AC / DC converter, and those can be really expensive....wondering how that will turn out.

Interesting that DigiKey is cheaper on some.

How many Chinese company quotes did you get to compare?

rea5245:

--- Quote from: blueskull on February 20, 2018, 11:17:23 pm ---The cheapest way is to source the parts yourself, and declare a fake, low custom value the ship the parts to China.

--- End quote ---

It's remarkable how often I see fake customs declarations. Our governments enact tariffs and individuals evade them frequently. So is "democracy" what the politicians do, or what the people do?

(Of course, large shipments undoubtedly get closer scrutiny from Customs.)

mrpackethead:

--- Quote from: blueskull on February 20, 2018, 11:17:23 pm ---When they can source the parts from Shenzhen market (general jellybean parts), they source them there for cheap.
When you use a proprietary part, they have to source them from major distributors, and the currency exchange service fee, import duty and sourcing company's profit will kick in.
The cheapest way is to source the parts yourself, and declare a fake, low custom value the ship the parts to China.

--- End quote ---

Its just not worth the risk, doign false declarations. Get caught, ( i dont' care what they do in China ) here doign that  ( sending stuff ) you will get a big fine.    Very different way of doign things here.

mrpackethead:

--- Quote from: alanambrose on February 20, 2018, 12:24:34 pm ---Hi,

I was looking at some small volume Chinese PCBA quotes recently and noticed that BoM numbers were a bit all-over-the-place. Surprisingly for me, some numbers were higher that Digi-Key USD pricing we pay for prototype quantity parts. This made it harder to compare quotes as I had to figure out what extra margin was buried in the BoM sourcing. I always thought that often the US price is quoted for low volume / discount for higher volume - and that in actual fact the PCBA supplier made a substantial part of their margin on the PCBA deal by sourcing lower cost parts locally.

Anyone have extra insight / experience on this? Either as a customer or supplier?

Alan

--- End quote ---

If the parts are being sourced from overseas, they are often more expensive for the small PCBA's to purchase than you coudl purchase them in the US or outside of china.    Larger PCBA's ( and if you are doign big jobs )  have tax-free zones, where goods come into and leave the country and there is no tax paid..  Import dutys are 20%+ on parts.     Many of the microcontrollers fit into this catagory..     if you want to find out what parts you can get locally check out one of the local distributors.   
http://www.szlcsc.com/  is the chinese digikey for example.    Some stuff is awesome. Some stuff is blah.  Szlcsc is pretty good with product tracablity,  I've never got burned with parts that are not 'real'.

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