4 ms·
Is a modern yield for SOS still as low as quoted?
by Aloha 3y ago
Is a modern yield for SOS still as low as quoted?
- kens 3y agoI don't have figures for modern yields. I hope the yield is better. But I think there are fundamental difficulties with matching up the sapphire and silicon crystals that tends to produce faults.
- Aloha 3y agoI'm astounded HP made commercial products out of a process with such a low yield, I dont know how that was economical. (though none of the HP gear was exactly low margin)
- kens 3y agoThe HP Journal article mentions the 9% yield as if they are perfectly fine with it. They were building these chips internally for high-margin gear (as you said), so it probably didn't matter if the chip cost $10 or $100, as long as it has the performance that they need. It's a completely different market from microprocessors such as the 6502 or the 8086, where customers are looking closely at the cost of the chip.
- Aloha 3y agoand RF components are still in that space to a greater or lesser extent too.