high-side current sensor

Or at-least an agent for a scalper. They're listing Rochester Electronics as supplier on some lines (other parts).

sfaik digikey mostly sells to designers, people making large numbers of devices find their parts elsewhere.

Yes, nobody buys in scale from Digikey

80cents is expensive in my world, but then again I also come from a business where qty products sold was counted in millions

We sell modest volumes of fairly expensive stuff. Parts cost is roughly 12% of sales price, and people (purchasing, engineering, manufacturing, testing) are a much bigger cost. Lately, availability dominates cost.

PCBs and metal cases, both custom, are big costs.

We buy a fair amount from Mouser and Digikey, expecially things like resistors that cost a fraction of a cent each.

A sales guy, from Arrow or Avnet or one of the biggies, said that "distributors" don't stock parts much any more, but Mouser and Digikey do. It looks to me that Digikey at least is trending that way too; it's hard to tell right now.

Somebody must--from the Thief River Falls Reginal Airport webpage:

"From FAA-published information gathered in 2012, the Airport experiences 31,200 aircraft operations per year (takeoffs and landings) of which 30,000 operations are attributed to general aviation operations, 1,250 from air carrier commercial service, 2,600 from other commercial/cargo service, and 100 military operations. Nearly 5,000 passengers (2,500 enplanement boardings) are processed annually from scheduled airline flights. The Airport has 26 based aircraft, including

3 multi-piston and 3 jet turbine airplanes.

So that's 3750 commercial takeoffs and landings, and a total of 2500 passengers. (The webmaster is apparently a bit arithmetically challenged, but oh well.)

Since there's not a lot in Thief River Falls except Digikey, one gathers that _somebody_ must be buying a lot of stuff from them.

Cheers

Phil Hobbs

We lazy engineers often specify a Digikey part for an initial buy, and our excellent purchasing lady buys quantities of the same thing somewhere else, at a much better price.

Digikey has/had a good multi-vendor search engine. It seems to make less sense lately. A category might for example have 25,000 items, and selecting a couple of very obvious qualifiers narrows it down to a few, or none.

Selecting for example a Vcc range gives a huge list of confusing, overlapping choices.

Or specifying something explicit gets me non-qualifying parts.

Lots of broken links too.

Never mess with purchasing ladies--it's almost as stupid as insulting somebody who's preparing your food. ;)

Yeah, their VCC, slew rate, GBW, and 3 dB bandwidth columns are so broken. They could usefully add a column for total supply voltage--that would help a good bit all by itself.h

Especially Samsung MLCC characteristic sheets. They keep breaking them for some reason--you'd think DK would just give up and mirror them.

Cheers

Phil Hobbs

Sometimes they link to a vendor site that requires registration and a password and all that nonsense, just to see a data sheet.

"The easiest thing in the world is not to sell."

- Melvin Goldstein

Interesting, so what is a rule of thumb, from your perspective, to go from parts cost to the manufactured product? Years ago, a colleague told me that the multiplier was 7-10X, e.g. if there were $10 worth of electronic parts, the cost of the manufactured product would be ~ $70-$100. That was internal costs. Add more for profit. This was for an all-electronic widget. Am sure things would be different if it were electro-mechanical. Lots of other factors could obviously impact this rule of thumb.

Another colleague of mine worked at the Zenith TV electronics engineering department. When given a subsection of a TV receiver to redesign for a new product, they had two over-riding guidelines: 1) minimize parts count, 2) If the cost of parts for the new design increased cost about $0.05 as compared to the old design, he had to go through a justification review. This was back in the 80's so I am sure things have changed a bit. It was, for me, just interesting to hear about this. j

I've heard of stories of gadgets made in volume so that the monthly cost of something like a few extra resistors could pay an engineers monthly salary

I was the lead innovator on a new product with release in a couple of months

Quantity of 500.000 pcs per month, so a 2 cent cost reduction could pay an engineers salary, not counting all the other overhead

We define "direct cost" as unburdened parts cost plus labor. A selling price of 3x DC is our lower limit. 6s is better, sometimes 10x is possible where the value to the customer is high and there is no competition.

We used to sell NMR gradient amplifiers to Varian/Agilent at maybe 4x DC. They marked our price up 6x to their customers.

I wonder what a high-end iphone costs Apple.

I get the impression that in high volume, contract manufacturers make a few per cent over their net costs. They often have contracts that let the customer audit their actual costs and pay them a few per cent more.

One of our customers proposed to do that to us. We declined.

Yeah, that scorches me, too.

Mel got that from me.

torsdag den 20. januar 2022 kl. 03.54.12 UTC+1 skrev snipped-for-privacy@highlandsniptechnology.com:

afaict the estimations are that the BOM for a $1000 phone is ~$500