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Technical Topics => The RF Workbench => Topic started by: ChrisSmolinski on October 05, 2020, 1124 UTC

Title: Watch out for those cheap components
Post by: ChrisSmolinski on October 05, 2020, 1124 UTC
Where do you think these were made? You get three guesses, the first two don't count.

(https://i.imgur.com/SpXHPFy.png)
Title: Re: Watch out for those cheap components
Post by: redhat on October 05, 2020, 1807 UTC
WOW!  This is a big reason why I only buy parts from reputable vendors.  Ebay is a crap shoot in that regard, especially with IC's

+-RH
Title: Re: Watch out for those cheap components
Post by: Rob. on October 05, 2020, 2008 UTC
You can tell by the font printed on it where they originate from... very distinctive, not used elsewhere.
Title: Re: Watch out for those cheap components
Post by: ThaDood on October 07, 2020, 1814 UTC
Ehhh??? Huh... Well, one way you could tell that you're getting a 3W carbon resistor, instead of a ceramic wire-wound 5W, is put an inductance checker to it. Look at it this way, at least you could probably use these on RF applications. But, still... Almost makes you not want to break open that carbon resistor, to find out just what's inside that. Hmmmmm, a piece of Tungsten???
Title: Re: Watch out for those cheap components
Post by: JimIO on October 07, 2020, 1951 UTC
""Must be a bitch to set up the machines that make those.""

Title: Re: Watch out for those cheap components
Post by: syfr on October 26, 2020, 1130 UTC
It's amazing how much more power a device can dissipate when you put a ceramic insulator on it.

A perfect example of Chineseium !
Title: Re: Watch out for those cheap components
Post by: CoolAM Radio on December 16, 2020, 1715 UTC


                      Those fake components are spreading all over the globe... like a virus!

                                            Blame them chineese for it (again! )
                   
                                          How long before fake humans?
Title: Re: Watch out for those cheap components
Post by: redhat on December 18, 2020, 2230 UTC
Quote from: CoolAM Radio on December 16, 2020, 1715 UTC
             
                                          How long before fake humans?

A quick survey of the internet and the media should yield many fine examples of such...

+-RH
Title: Re: Watch out for those cheap components
Post by: Charlie_Dont_Surf on December 21, 2020, 0417 UTC
Quote from: Σ on October 05, 2020, 2008 UTC
You can tell by the font printed on it where they originate from... very distinctive, not used elsewhere.

That was the first thing I noticed too.
Title: Re: Watch out for those cheap components
Post by: Kingbear Radio on December 25, 2020, 0223 UTC
Eww, that's gross. Maybe get away with it for experimenters, but let's hope they're not in millions of PCs like those capacitors in the capacitor plague years.

I see that, the font is like an older cement resistor would have, where it seems like most now are printed in dot matrix, where that's more like screened.