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| How is Chipageddon affecting you? |
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| mikeselectricstuff:
--- Quote from: bookaboo on January 25, 2023, 11:10:10 am ---Don't forget Octopart often have wrong info from RS regarding stock. To the point where its not trustworthy at all (for RS). --- End quote --- I invariably find that RS stock shown on Findchips is a complete lie. Findchips should drop RS if they can't provide true information. |
| exe:
--- Quote from: tszaboo on February 06, 2023, 11:45:26 pm ---13 weeks -as I recall- is basically the time to go through the production line. So there is like constant free capacity? --- End quote --- Well, I'm no expert, but I'd assume out of those 13 weeks it takes only a fraction of time for actual manufacturing. I'd expect there is a lot of queuing time in those 13 weeks. Like, "waiting to be tested", "waiting to be packaged", "waiting to be shipped", etc. So, probably, not "constant", but there is some free capacitance on average. Or they do their priorities, producing what brings them the most money, or if they have some contractual obligations with strict deadlines. |
| AndyC_772:
It's just logistics. Swapping mask sets to make a new IC takes time, which is downtime for the expensive fab, so it's done as infrequently as possible. Each individual type of die may be made only a few times a year, in a batch that's big enough to meet whatever demand is forecast. If a die is scheduled to be manufactured 4 times in a year, then it gets labelled as having a 13 week lead time. The lead time you actually see from order placement to delivery may well be different, depending on where you are within that 13 week period, and how long it takes to package a die and get it packed and shipped through distribution. |
| tszaboo:
https://en.wikipedia.org/wiki/Semiconductor_device_fabrication "The fabrication process is performed in highly specialized semiconductor fabrication plants, also called foundries or "fabs", [1] with the central part being the "clean room". In more advanced semiconductor devices, such as modern 14/10/7 nm nodes, fabrication can take up to 15 weeks, with 11–13 weeks being the industry average." I know wikipedia as source... --- Quote from: exe on February 07, 2023, 10:39:42 am ---Well, I'm no expert, but I'd assume out of those 13 weeks it takes only a fraction of time for actual manufacturing. I'd expect there is a lot of queuing time in those 13 weeks. Like, "waiting to be tested", "waiting to be packaged", "waiting to be shipped", etc. --- End quote --- I'm fairly sure they have teams organizing orders to make production as efficient and fast as possible, since time is money. |
| peter-h:
I am pretty sure the above 13 week period is not at all related to the fab lead time. The chips need to be tested, packaged, etc. That leadtime is probably a good few months. |
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