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Guild: wafer.space Community
Channel: ℹ️ - Information / ⁉️-questions / minimum CoB quantity?
After: 2026-08-31 11:59 p.m.
Before: 2026-10-01 12:00 a.m.
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[2026-09-28 9:32 a.m.] daobaanhvn
Hi all / @Tim 'mithro' Ansell, I have a question about the CoB packaging option for Run 3.

I don't need all 1000 dies packaged. I'd like a smaller batch on CoB for bring-up and testing, with the rest shipped as bare dies. From earlier messages, it sounds like in Run 1 some people received CoBs plus their remaining raw dies, but I couldn't find whether the number packaged can be chosen.

1. Can we pick how many dies go onto CoB?
2. Is pricing per packaged die, and is there a minimum quantity?
3. If I start with a small batch, can more of my bare dies be packaged later?

Thanks!

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[2026-09-28 9:49 a.m.] mole99
Seems the ping above didn't work: @Tim 'mithro' Ansell

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[2026-09-28 10:13 a.m.] mithro_
Hi @daobaanhvn - I'm afraid not. It's only cost effective to do the complete batch at once.


[2026-09-28 10:14 a.m.] mithro_
@daobaanhvn - The minimum cost is pretty much ~$1,500 per run -- no matter if we bond 10 die or 1,000 die.


[2026-09-28 10:22 a.m.] mithro_
@daobaanhvn - You are welcome to purchase two slots (one with CoB and one without) and put the same design in both.

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[2026-09-28 5:05 p.m.] daobaanhvn
Thank you, good to know haha


[2026-09-28 9:32 p.m.] mithro_
We are working with the online chinese PCBA houses to try and enable wire bonding to be a normal part of their PCBA services. Then you could have a small number bonded with totally custom pattern for pretty cheap.

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[2026-09-29 12:09 a.m.] glaxus_
I also had the same question as number 1, can we request that not all dies are bonded if we choose the CoB option, understanding that the price is still $1500?


[2026-09-30 10:35 a.m.] namibj
I'd expect something like "half fo the dies" or maybe "quarter of the dies" fragmentation between bare-dies and COB-packaging to be realistic at the same price point, especially if you'd not be the only one to ask such.


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