Any fake c1971 that work ?

XXL · Post by **XXL** » Tue Apr 28, 2020 2:33 pm

Looking for some fakes that actually work. Iv bought a few from China, they just heat up and draw loads of current. I’ve checked for swapped legs aswell.

thewisepranker · Post by **thewisepranker** » Tue Apr 28, 2020 3:13 pm

A properly working fake device completely defeats the entire purpose of the fake in the first place.

XXL · Post by **XXL** » Tue Apr 28, 2020 3:49 pm

Why does it ? It’s just a replica.

XXL · Post by **XXL** » Tue Apr 28, 2020 3:50 pm

Iv got some other fake bits that work very nice. Just sometimes they put the legs the wrong way round.

Albert H · Post by **Albert H** » Tue Apr 28, 2020 4:48 pm

Why buy fakes from China when the real thing is available from many suppliers at quite reasonable prices? I needed some 5 Watt drivers, and found the 2SC1971s I bought from a London-based TV component specialist shop were fine. They charged me £19.40 for ten of them. They're Mitsubishi branded, and in my normal broadband circuit, they develop just over 5 Watts for 550mW of drive at 12V supply, so I'm quite sure that they are the genuine part.

You just have to get stock lists from a few companies, and you'll be surprised. A lot of the "rare" RF parts you need are quite easily available.

thewisepranker · Post by **thewisepranker** » Tue Apr 28, 2020 7:53 pm

XXL wrote: ↑Tue Apr 28, 2020 3:49 pm Why does it ? It’s just a replica.

It's not a replica, it's a counterfeit.

teckniqs · Post by **teckniqs** » Tue Apr 28, 2020 8:19 pm

Has anyone ever used 2sc1972?

piraterx · Post by **piraterx** » Tue Apr 28, 2020 9:04 pm

nte343 and mrf262 spring to mind if i think right

Electronically · Post by **Electronically** » Tue Apr 28, 2020 9:06 pm

If 2sc1971 is fake then try a 2n3866 this might work.

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piraterx · Post by **piraterx** » Tue Apr 28, 2020 9:17 pm

Getting old but am sure i swapped a 1972 for a 1971 many moons ago and all was good.

at a quick look,same case both npns up to 175megs 1971 got 6w rating with 10 gain and 1972 got lower gain of 7.5 but higher power rating of 14w

Electronically · Post by **Electronically** » Tue Apr 28, 2020 9:59 pm

piraterx wrote:Getting old but am sure i swapped a 1972 for a 1971 many moons ago and all was good.

at a quick look,same case both npns up to 175megs 1971 got 6w rating with 10 gain and 1972 got lower gain of 7.5 but higher power rating of 14w

Yup just a bit more drive to run it thought at 14 Watts.

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Albert H · Post by **Albert H** » Wed Apr 29, 2020 2:33 am

Electronically wrote: ↑Tue Apr 28, 2020 9:06 pm If 2sc1971 is fake then try a 2n3866 this might work.

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The 2N3866 is good for ~1 Watt and can give you around 12dB gain at 28V supply and has an Ft of 500MHz. The 2SC1971 is rated for 6 Watts RF and ~10 dB gain at 13.5V and is only useful to about 200 MHz. Completely different devices.

Electronically · Post by **Electronically** » Wed Apr 29, 2020 3:44 am

Albert H wrote:
Electronically wrote: ↑Tue Apr 28, 2020 9:06 pm If 2sc1971 is fake then try a 2n3866 this might work.

Sent from my AMN-LX9 using Tapatalk
The 2N3866 is good for ~1 Watt and can give you around 12dB gain at 28V supply and has an Ft of 500MHz. The 2SC1971 is rated for 6 Watts RF and ~10 dB gain at 13.5V and is only useful to about 200 MHz. Completely different devices.

Yup Albert was just an idea if there is only fake ones around. I know it is not same chip but a just though if he's stuck he could swap it for this till he finds his genuine chip. Just temporary at moment.

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yellowbeard · Post by **yellowbeard** » Wed Apr 29, 2020 5:44 am

Dönberg have the 2SC1971 for about a fiver ex-vat, they don't deal in any fake shite:
https://www.donberg.co.uk/descript/2/2sc_1971.htm
Enigma have tested and verified fakes for a fiver, or genuine old stock for £6.50.
https://www.enigma-shop.com/index.php?s ... com_search

XXL · Post by **XXL** » Wed Apr 29, 2020 4:13 pm

Enigma are getting really crap tbh. They never have any stock.

thewisepranker · Post by **thewisepranker** » Wed Apr 29, 2020 4:27 pm

They've got 24 in stock https://www.enigma-shop.com/index.php?o ... _pathway=2

Any fake c1971 that work ?

Any fake c1971 that work ?

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