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Author Topic: Guess how old is it?  (Read 2911 times)

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Offline blueskullTopic starter

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Guess how old is it?
« on: February 05, 2015, 03:45:57 am »
I got one of this thing, a LED, metal packaged, with epoxy lens.

Can anyone guess how old it is? I'll publish the answer a day later.

Also, guess where it came from?
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Offline codeboy2k

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Re: Guess how old is it?
« Reply #1 on: February 05, 2015, 07:16:52 am »
1970s russian led?
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Offline T3sl4co1l

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Re: Guess how old is it?
« Reply #2 on: February 05, 2015, 02:21:02 pm »
Gonna say mid 60s, possibly green (GaP).

Tim
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Offline DmitryL

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Re: Guess how old is it?
« Reply #3 on: February 05, 2015, 03:33:22 pm »
Quote from: codeboy2k on February 05, 2015, 07:16:52 am
1970s russian led?

Doesn't look like it. Soviet LEDs in a similar packaging had metal can and a glass lens.
I remember a green soviet AL360 LED that was, actually, IR LED in a metal can + anti stokes phosphor that produced green light.
Looks like this one:
http://g777.ru/catalog/led_led_al/-412568/
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Offline CM800

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Re: Guess how old is it?
« Reply #4 on: February 06, 2015, 06:56:04 pm »
If it is a prototyped I wouldn't be surprised with them using an old package like that, It's cheaper and easier to prototype / develop with packages that used to be hand made, It wouldn't surprise me if they had an old machine that would be hand operated by people to build the old LED packages.
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