Z.
I think is probably more accurate that the white goods manufacturers ordered in their parts rather earlier, and what they really have is a inventory of 'new' old stock, i.e, spares that were bought in but not yet used. Such things do have something like a 'best before' date as the solder pads oxidise, and while parts can be hand soldered when many years beyond this, they would normally be rejected for machine soldering as proper wetting of the joints is not guaranteed.
Actually de-soldering parts in the component recovery sense is certainly possible but commercially it is fraught with risk, and in general reliability like a new part cannot be guaranteed without extensive/ expensive testing. Without that checking it is rather like driving a part-worn tyre... It can be done well and may need to happen very occasionally but is not really a technique suitable for mass production.
But other odd things are certainly being done
mike.
I think is probably more accurate that the white goods manufacturers ordered in their parts rather earlier, and what they really have is a inventory of 'new' old stock, i.e, spares that were bought in but not yet used. Such things do have something like a 'best before' date as the solder pads oxidise, and while parts can be hand soldered when many years beyond this, they would normally be rejected for machine soldering as proper wetting of the joints is not guaranteed.
Actually de-soldering parts in the component recovery sense is certainly possible but commercially it is fraught with risk, and in general reliability like a new part cannot be guaranteed without extensive/ expensive testing. Without that checking it is rather like driving a part-worn tyre... It can be done well and may need to happen very occasionally but is not really a technique suitable for mass production.
But other odd things are certainly being done
mike.
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