General > General Technical Chat
Distributors are so thick nowadays
free_electron:
--- Quote from: Cerebus on May 21, 2020, 07:54:49 pm ---
You are all missing the point that this is an RFQ
--- End quote ---
So then why don't you use an RFQ system ? Like octopart or icfinder ? upload your partslist and it will suggest you parts, prices,stock quantities and suppliers.
click through and place orders.
Cerebus:
--- Quote from: free_electron on May 28, 2020, 07:20:08 pm ---
--- Quote from: Cerebus on May 21, 2020, 07:54:49 pm ---
You are all missing the point that this is an RFQ
--- End quote ---
So then why don't you use an RFQ system ? Like octopart or icfinder ? upload your partslist and it will suggest you parts, prices,stock quantities and suppliers.
click through and place orders.
--- End quote ---
Why don't I? Because it's not me that wants to place RFQs, it's Peter.
tom66:
This is one of the things that confuses me about my current employer.
I am asked to complete BOMs with specific part numbers, rather than a generic classification. This has led me to get calls from the purchasing department along the lines of, "We can't buy 123-456 any more, it's a disaster and we need 25,000 by tomorrow." That turns out to be a 0805 100nF capacitor of which there are hundreds of possible substitutions, with large orders like that being available next day but then I find out we've been paying 300 euros for a reel of parts because they've been marked obsolete and we can only get them from greymarket source X. Sometimes the components are really not critical.
No doubt this has cost us plenty of money too, given these components fluctuate in price and the cheapest supplier will vary as time goes by. I don't know if there's a "generic" catalogue of components, where you can say, use "Generic_0805_100nF_X5R" as a part number and any reasonable part is selected, but I'd love to find out.
exe:
--- Quote from: tom66 on May 28, 2020, 08:33:54 pm ---I am asked to complete BOMs with specific part numbers, rather than a generic classification.
--- End quote ---
I often see that high-frequency part specify a list of "approved" capacitors with required ESR and ESL. Using a different part may cause problems. May that's why they want to have specific components?
That can also be the case with precision circuits.
Afaik, rigol 1054z suffered from using wrong components in PLL, and that caused jitter (apart from layout mistakes). Or that was another oscilloscope...
CatalinaWOW:
--- Quote from: tom66 on May 28, 2020, 08:33:54 pm ---This is one of the things that confuses me about my current employer.
I am asked to complete BOMs with specific part numbers, rather than a generic classification. This has led me to get calls from the purchasing department along the lines of, "We can't buy 123-456 any more, it's a disaster and we need 25,000 by tomorrow." That turns out to be a 0805 100nF capacitor of which there are hundreds of possible substitutions, with large orders like that being available next day but then I find out we've been paying 300 euros for a reel of parts because they've been marked obsolete and we can only get them from greymarket source X. Sometimes the components are really not critical.
No doubt this has cost us plenty of money too, given these components fluctuate in price and the cheapest supplier will vary as time goes by. I don't know if there's a "generic" catalogue of components, where you can say, use "Generic_0805_100nF_X5R" as a part number and any reasonable part is selected, but I'd love to find out.
--- End quote ---
I don't know why your company does this, but mine did and I still received fairly frequent calls from the purchasing department along the lines of: The transistor you specified costs $16 dollars and I can get this transistor for just a couple of cents. Transistors are transistors aren't they. The part was very high power for its time in a custom package that allowed the product to have a unique form factor and had difficult environmental and reliability requirements. The suggested replacement was a plastic 2n2907 kind of floor sweeping.
It is not just the distributors who have people that are not qualified to pick parts. Now the question that really matters is would the company have save money through paying your salary to review all of the purchase orders and check for lower price parts.
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