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How is Chipageddon affecting you?
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T3sl4co1l:

--- Quote from: peter-h on January 04, 2023, 05:20:20 am ---
--- Quote ---add more BOM line items
--- End quote ---

Do some companies have such a rule? It would be utterly bizzare. Resistors and caps and common transistors are always available, and are always cheap. Using commodity parts to replace a unique chip, especially a weird thing like that, is always a good idea.

--- End quote ---

Yes? Most of them? More line items means more reel changes on the PnP, more labor required, more production cost. :-+

Tim
peter-h:
Not if you design everything with 10k resistors etc (you get my drift) :)

You can always tell a novice working without supervision. The circuit is full of 9.1k resistors :) A lot of Honeywell avionics are like that e.g. the KFC225 autopilot - hundreds of weird component values which are so obviously pointless.
Kasper:

--- Quote from: T3sl4co1l on January 04, 2023, 05:38:14 am ---
--- Quote from: peter-h on January 04, 2023, 05:20:20 am ---
--- Quote ---add more BOM line items
--- End quote ---

Do some companies have such a rule? It would be utterly bizzare. Resistors and caps and common transistors are always available, and are always cheap. Using commodity parts to replace a unique chip, especially a weird thing like that, is always a good idea.

--- End quote ---

Yes? Most of them? More line items means more reel changes on the PnP, more labor required, more production cost. :-+

Tim

--- End quote ---


I'm not really familiar with PnP but I've heard removing an item can have extra impact if for example their PnP has 20 reel slots and your BOM has 21 or 41 line items.

I'm not sure how many slots my assemblers have or how much that difference actually costs.

I just know that's more items for me and everyone else to deal with and I prefer to have less.
Kasper:

--- Quote from: peter-h on January 04, 2023, 06:05:29 am ---Not if you design everything with 10k resistors etc (you get my drift) :)

You can always tell a novice working without supervision. The circuit is full of 9.1k resistors :) A lot of Honeywell avionics are like that e.g. the KFC225 autopilot - hundreds of weird component values which are so obviously pointless.

--- End quote ---

My guess is they had 10k everywhere but were fine with 7k to 13k.  Needed a precise 9.1k somewhere so they changed all their 10k to 9.1k.
peter-h:
No; they manage to use up much of the E91 range :)

But the point is that being able to manufacture something is a lot better than using some weird chip which you can't get.

I am now reworking most boards to use multiple alternative chips where possible. For example the LM2936M-5.0 became unobtainable but ST make a similar part, not pin compatible, rather obscure, and half the price! Then there is the MIC5201. MAX3089 can be replaced with a MAX489 which can be replaced with various other chips...

Getting rid of anything from Maxim is a great idea.
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