Color rings on diode

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

 

[Tilmann Reh]

mingyan_chow@yahoo.com.hk schrieb:

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

The same as for resistor color coding: (1N) 4148 in this case.

--
Dipl.-Ing. Tilmann Reh
http://www.autometer.de - Elektronik nach Maß.

 

[Watson A.Name - \"Watt Su]

<mingyan_chow@yahoo.com.hk> wrote in message
news:1124430413.342738.253570@z14g2000cwz.googlegroups.com...

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

Makes perfect sense. It's a 1N4148.

 

[RST Engineering (jw)]

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



<mingyan_chow@yahoo.com.hk> wrote in message
news:1124430413.342738.253570@z14g2000cwz.googlegroups.com...

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

 

No black band. IN4148 exactly what it is. Good thinking. Thanks

 

[RST Engineering (jw)]

How do you know which end is the cathode?

Jim



<mingyan_chow@yahoo.com.hk> wrote in message
news:1124629997.326607.110170@f14g2000cwb.googlegroups.com...

No black band. IN4148 exactly what it is. Good thinking. Thanks

 

[Remove _ for valid addres]

In article <de3sg0$edk$1@online.de>, Tilmann Reh wrote:

mingyan_chow@yahoo.com.hk schrieb:

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

The same as for resistor color coding: (1N) 4148 in this case.

How does one know which end to start reading from?

Mike.

 

[mmm]

Remove _ for valid address wrote:

In article <de3sg0$edk$1@online.de>, Tilmann Reh wrote:

mingyan_chow@yahoo.com.hk schrieb:


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

The same as for resistor color coding: (1N) 4148 in this case.


How does one know which end to start reading from?

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 grey

P.S. I am not sure if japanese (1S.... ) diode coding is similar

Mike.

 

That is true, I believe this is some custome made component. Cause I
couldn't find any colour coding diode in the market.

 

[Spehro Pefhany]

On 23 Aug 2005 22:20:41 -0700, the renowned mingyan_chow@yahoo.com.hk
wrote:

That is true, I believe this is some custome made component. Cause I
couldn't find any colour coding diode in the market.

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
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