I saw color rings on the diode, which is yellow, brown , yellow and grey. I know this is simply a diode. what does the color means. Thanks
- posted
18 years ago
Color rings on diode
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- posted
18 years ago
mingyan snipped-for-privacy@yahoo.com.hk schrieb:
The same as for resistor color coding: (1N) 4148 in this case.
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
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- posted
18 years ago
Makes perfect sense. It's a 1N4148.
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18 years ago
The more important question is: Were the rings (bands) all on one end scrunched together or spread out? If spread out, was there a black band you didn't tell us about?
Jim
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18 years ago
No black band. IN4148 exactly what it is. Good thinking. Thanks
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18 years ago
How do you know which end is the cathode?
Jim
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18 years ago
How does one know which end to start reading from?
Mike.
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18 years ago
usually one band is larger then others and it marks the ... ( anode cathode ? I never, never remember the name of the N-side of the diode junction )
this band is the most significant digit in the code
1N4148 is: yellow ( larger band ) black yellow greyP.S. I am not sure if japanese (1S.... ) diode coding is similar
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- posted
18 years ago
That is true, I believe this is some custome made component. Cause I couldn't find any colour coding diode in the market.
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- posted
18 years ago
It used to be popular with European component makers. I bought an ammo box of 5,000 Philips diodes once which were so marked.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com