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Re:Your DS18B20 temperature sensor is likely a fake, counter... by myself248 on Sunday July 12, 2020 @08:59PM (#23816096)
I'd never expect to find these in official products from trusted brands, but off-brand crap? Oh yeah. DIY kits? Absolutely. The parts drawer at the makerspace? One hundred percent.

So much stuff on eBay is free shipping, that's huge when you only need a few dollars worth of stuff. If I could convince Digi-Key to lick a 55-cent stamp when I need ten of something, instead of charging me $7 for shipping, I'd have a lot fewer counterfeit parts around.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by kevin_thibedeau on Sunday July 12, 2020 @09:46PM (#23816387)
These show up in "trusted" Chinese brands too. Whenever you see a teardown where the markings are ground off a chip with obvious, non-trade secret function (USB serial converter for instance), its most likely a counterfeit that needs to have its fake markings removed to get past first world customs inspectors.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by rasz on Monday July 13, 2020 @04:29AM (#23818482)
Re:Your DS18B20 temperature sensor is likely a fake, counter... by fennecfoxen on Sunday July 12, 2020 @09:29PM (#23816278)
There will be no licking of 55 cent stamps. US stamps have been 100% self-adhesive since 2016ish.

The envelope is of course another matter.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by sfgweilr4f on Sunday July 12, 2020 @10:03PM (#23816482)
Not to mention the obvious, but that glue isn't necessarily that great* for you either.

* allegedly of course.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by pmiller2 on Sunday July 12, 2020 @10:29PM (#23816618)
Is this a Seinfeld reference, or something else I’m not understanding correctly? :)
Re:Your DS18B20 temperature sensor is likely a fake, counter... by fennecfoxen on Tuesday July 14, 2020 @05:31PM (#23838193)
the old fashioned glue is gum arabic... gum arabic sees more uses these days in food than outside it
Re:Your DS18B20 temperature sensor is likely a fake, counter... by uep on Monday July 13, 2020 @07:23AM (#23819525)
I think this is about to change. The Chinese shipping will go up. A couple weeks ago, there was an article posted here about why shipping from China is so cheap, epacket[1]. Because of epacket, it was cheaper to ship from China than it was to ship to even within the same state for small packages.

A recent change allows the USPS to increase rates for epacket. It looks like the new rates will go up slowly, so shipping from China will still be cheaper for packages under 3 ounces for a few years.

[1] https://www.ecomcrew.com/why-china-post-and-usps-are-killing...

Re:Your DS18B20 temperature sensor is likely a fake, counter... by IgorPartola on Sunday July 12, 2020 @09:43PM (#23816374)
This. I buy a decent amount of hobby electronics from eBay and AliExpress because yes it is cheaper. When I need quality, Mouser, DigiKey, and McMaster-Carr are there for me. But the minimum $7-9 shipping is the main reason is forego them. I’d gladly pay 2x for small electronic components (vs directly from China options) if shipping wasn’t a problem.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by fermienrico on Sunday July 12, 2020 @10:27PM (#23816610)
For any serious person trying to develop a little bit beyond hobby projects: Think about an hourly rate of $80/hour for yourself. If you have to spend an hour trying to fiddle with subpar shady parts, you've already paid for the shipping 8 times over.

Also, it is painful to wait for these packages from China. Digikey ships same day and its at your door step in the morning (I overnight it) and if you use $7, it is usually 2-3 days.

Plus, you're supporting legit businesses and not the shenzhen market.

I can understand total hobbyist who cannot afford $7 shipping often. But even then, you can bundle all your parts and order once.

Any engineer who earns a salary can afford $7 shipping. If you're a business, there is absolutely no excuse to penny pinch here. You're losing money by using unreliable parts, if not now, at some point in the future.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by fpgaminer on Monday July 13, 2020 @01:00AM (#23817326)
> But even then, you can bundle all your parts and order once.

I fall for this trap every. single. time.

_HOURS_ spent racking my brain to think of all the things I might need in different scenarios, so I can be absolutely, positively, 100% sure that I have everything in that one single order.

... and end up placing 2 to 3 more orders before the project is done.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by fermienrico on Monday July 13, 2020 @02:02AM (#23817573)
Hahaha I can totally relate. Always ends up being a few packages.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by joshvm on Monday July 13, 2020 @07:34AM (#23819616)
> If you're a business, there is absolutely no excuse to penny pinch here.

Most of these sites offer free shipping to trade accounts with no MOQ as well.

But also you want that customer service as a business. Mouser once sent me a replacement camera at work (university) because they supplied one with the wrong interface. No doubt we have a big order book, but I've had similar experiences with RS as a hobbyist customer - ordered tools which are not up to scratch or slightly out of tolerance - "just keep it, we'll send a replacement".

Re:Your DS18B20 temperature sensor is likely a fake, counter... by bigiain on Sunday July 12, 2020 @11:39PM (#23816940)
> I can understand total hobbyist who cannot afford $7 shipping often. But even then, you can bundle all your parts and order once.

Or, like me, pretty much go "Meh, its counterfeits all the way down!" and frequently tack on a buck or twos worth of other "That's interesting looking, I might want one of those one day, I'll grab a few on this order" stuff when you're buying things you need for a current (hobby grade) project, so you've got a few boxes full of (hopefully sufficiently well enough labelled and documented" junk on-hand for the next random project idea... I bet I have a dozen or so "DS18b20"s here from that approach. I _think_ I could probably find then in under 10 minutes if I had an idea that needed one right now. Maybe... (Actually, I do have that idea. I want to put temp logging on a little LiPo battery that sits under a small solar panel to run an ESP32. I _think_ it's probably failing early because the whole thing gets too hot in the du5rect sunlight. Logging will confirm/deny that, and let me measure changes with insulation and/or fan cooling. Maybe I'll go hunt for one tonight...)

Re:Your DS18B20 temperature sensor is likely a fake, counter... by amelius on Monday July 13, 2020 @06:12AM (#23819104)
But why can't digikey just charge for what it costs them to send the items?

Now it feels like I'm paying some kind of tax.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by alibarber on Monday July 13, 2020 @06:58AM (#23819384)
Because the cost of someone picking up a reel of 10000 resistors, from a warehouse that has to be rented heated/cooled etc etc doesn't scale down to that 1 resistor, even if the shipping cost might... I know, it sucks! - I have seen many suppliers that cater for hobbyists around the world and will mail you a resistor in an envelope. But I'm sure that they don't make enough money to send you a certification and guarantee of authenticity with it, which is why real industrial users won't mind paying $50 for a handful of components because those guarantees are worth far more...
Re:Your DS18B20 temperature sensor is likely a fake, counter... by amelius on Monday July 13, 2020 @07:01AM (#23819400)
> Because the cost of someone picking up a reel of 10000 resistors, from a warehouse that has to be rented heated/cooled etc etc doesn't scale down to that 1 resistor

I understand that. But please charge me for what it costs. Don't let people with small orders pay the price for people with large orders. They already get discount for their order size!

Or if this is not possible at least call it an order-picking fee, don't lump it in the shipping costs.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by fermienrico on Monday July 13, 2020 @11:23AM (#23821717)
Shipping costs are actually transparent at Digikey. It is exactly what they pay to USPS.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by bigiain on Sunday July 12, 2020 @11:30PM (#23816888)
Same. I read through this thinking "What, my team sensor on the data logger for my coffee grinder might be more than half a degree out? You know what? I totally don't care, and wouldn't have spent an extra 50 cents to get that much accuracy..."

I do have ethical qualms about supporting/funding "stolen IP", but then I've kinda got ethical qualms about the whole concept of IP anyway, and if you wanted to go hardline on IP compliance you'd probably have to avoid everything out of China (and everything that contains components out of China)... I wonder how often Apple get counterfeit components slipping through on Foxconn production lines, and how much effort they put into stopping it beyond extensive QA - which only ensures any counterfeits that make it through need to be close-enough to functionally equivalent to pass all the tests? The "test after" approach kinda pushes towards more IP infringement rather than less, since it's likely parts built from stolen designs would pass more often that parts reimplemented according to the spec?

Re:Your DS18B20 temperature sensor is likely a fake, counter... by lutorm on Monday July 13, 2020 @12:28AM (#23817163)
If you don't need that accuracy, why would you use a DS18B20 in the first place. You can use a dirt cheap NTC.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by andi999 on Monday July 13, 2020 @03:16AM (#23817927)
Maybe you want to save on the A/D hardware?
Re:Your DS18B20 temperature sensor is likely a fake, counter... by selectodude on Sunday July 12, 2020 @11:31PM (#23816893)
That's actually how much it costs to ship stuff when it's not being exceptionally heavily subsidized by the utterly broken Universal Postal Treaty.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by kuschku on Monday July 13, 2020 @04:15AM (#23818401)
Orders with DHL across the EU are pretty much $4, without any other company ever handling it. Deliveries don't have to be that expensive.

Going further, if I'm in Germany, and order from a local place (e.g. a local ebay seller), I pay like $0.80 for postage on a delivery.

If I order from a reputable store... it's like 2 weeks waiting time with $15 on delivery.

In the past there used to be small stores everywhere selling every tiny part, but nowadays...

Re:Your DS18B20 temperature sensor is likely a fake, counter... by pravda on Monday July 13, 2020 @01:27AM (#23817448)
Digikey would be charging more then $5, but competition forces them to not charge outlandish shipping rates!

It didn't used to be that way -- mail order suppliers used to charge high fake "Shipping & Handling" fees.

That's why Amazon introduced 'free' shipping.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by Gracana on Sunday July 12, 2020 @10:45PM (#23816690)
Hmm, I was going to say that digikey has 3 or 4 dollar shipping, but I checked and it's $5 for a first class mail. Maybe they've changed it, or maybe it's COVID-related. I recall that they had a low price for shipping of a small maximum weight, which was good for little orders of just a few components. I generally just suck it up and place the order regardless of the shipping cost, it's not great to spend as much on shipping as you did on parts, but it's still cheaper than buying parts locally. Remember buying the assorted resistor packs at Radio Shack? Ugh.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by as-j on Monday July 13, 2020 @12:10AM (#23817082)
I've got this soft spot in my heart for digikey, they've always shipped so quickly and called on the smallest issue and offered to help. When ever they call I always do that "why is someone from Minnesota calling me?" It's interesting how some vendors can build trust easily.

But $5 doesn't feel bad for shipping to get good parts quickly from a company I trust. But your point is taken. Sucks to put a $0.30 temp sesnor and pay $5 to ship it. =)

Re:Your DS18B20 temperature sensor is likely a fake, counter... by VLM on Monday July 13, 2020 @08:53AM (#23820221)
I pad my order by adding expendables, stuff I know I'll use a lot of. There's a certain kind of end-fed SMA pcb connector I use a lot of. Solder. Flux. Certain JST-type connectors.

I also keep a "gift list" for myself of things I've always meant to experiment with but haven't gotten around to ordering. I ended up playing with MSP430 controllers this way.

Re:Your DS18B20 temperature sensor is likely a fake, counter... by the_pwner224 on Monday July 13, 2020 @12:06AM (#23817055)
I've made a few orders over the past few months. The $5 is for less than 14 ounces (which is surprisingly heavy, I just had a big heatsink and a bunch of other components shipped in that weight); after that it's $9 for any of UPS/FedEx/USPS. I guess it's just USPS price inflation? I remember when stamps used to be 42 cents.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by amelius on Monday July 13, 2020 @06:07AM (#23819073)
I wonder how do you organize parts? Do you keep your "possibly fake" parts strictly separated from the real parts? I already have trouble keeping resistors with the same value but different power rating separated.
Re:Your DS18B20 temperature sensor is likely a fake, counter... by numpad0 on Monday July 13, 2020 @12:23AM (#23817144)
I’ve read there’s some financial scheme that you get >100% kickbacks for untracked packets from China through Singapore to destinations. Certain mail containers are going at regular intervals carrying much as possible by volume, paid by governments as investments to build nations might, or something like that.

So sellers pay for shipping, which is cheap, then gets subsidy, then there’s delay between Buy Now and actual transfers and financing to compensate it, those supposedly all add up and turn profits.

Digi-Key on the other hand probably has employee pension plans and that would be as far they go in terms of global financial investment techniques, so...

Re:Your DS18B20 temperature sensor is likely a fake, counter... by p1mrx on Sunday July 12, 2020 @10:48PM (#23816700)
When I bought stuff from DigiKey this year, the shipping was $5.