Hi Jason
I am not sure that you are using their online assembly quoting tool in the way they envisage, it is designed for complete board assembly and they make their money by the number of components, all of which have to be supplied in PnP ready packaging except Rs and Cs which they give you for free from their own reels (its cheaper for them to do so) because the assembly charge for each is a magnitude more than their value!
Their terms basically indicate they reserve the right to charge what they like if the assembly requirements are unusual, so you might want to get that quote in writing ;-)
In my experience these sort of individual difficult package placements (as opposed to complete board assemblies) are more expensive, cheapest I have seen for this sort of placement in the past is about £40 + vat per chip.
"There are many back-street workshops that routinely remove, re-ball and resolder BGAs on laptop motherboards, without damaging any of the adjacent devices. Worst case, you could employ one of these."
This sounds like 'shenzhen' talk to me, certainly in the U.K. these sorts of workshops are not prevalent, most that operate on these sorts of chips charge for their skills at market value (unless you can pull in some favours) . I also would recommend with give these chips the respect they deserve when it comes to both design and assembly as they are as common as 'rocking horse sh*t'.
Omer the Canterbury ideas an excellent one.
The more important question however is what sort of boards do we actually want to make with these chips, its a far more interesting conversation?
regards Al
As for
On Wed, Oct 31, 2012 at 6:12 PM, Jason Flynn G7OCD flynnjs@yahoo.com wrote:
On 31/10/2012 15:45, Omer Kilic wrote:
That is a cracking deal, would you mind sharing the details of that board house, off the list if you'd prefer?
Sure. I've previously used PCBTrain. http://www.pcbtrain.co.uk/quote.php?set=assembly The online calculator shows £126 ex VAT & P&P for 8 assemblies with 1 BGA on each on 15 day turnaround.
I'm not affiliated with PCBTrain but they've been reasonably reliable for me (although I did have a couple of unpopulated PCBs with microscopic short circuit that I needed to sever).
I'm sure there are others out there which would do the job too but I've not seen many assembly houses that state anything other then "contact us for a quote" so please look around too.
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