1s2473 diodes

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1s2473 diodes

Postby spoontex » 23 Jan 2018, 16:58

Hello,

I've bought 10 pack of 1s2473 diodes from hon kong. How can I check if the diodes are authentic or fake?

Thanks.
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Re: 1s2473 diodes

Postby Manfred » 23 Jan 2018, 23:23

spoontex wrote:Hello,

I've bought 10 pack of 1s2473 diodes from hon kong. How can I check if the diodes are authentic or fake?

Thanks.


If you don not have a curve tracer, then you can feed in a current and measure the voltage arcross the diode.
To feed in the current use a Battery and a resistor in seriell.
f.g. 9V Batterie Resistor value
0.2 Milliamps -> 39 Kiloohms in seriell with 3.3 Kiloohms
0.5 Milliamps -> 18 Kiloohms
1.0 Milliamps -> 8.2 Kiloohms in seriell with 180 Ohms
2.0 Milliamps -> 3.9 Kiloohms in seriell with 270 Ohms
5.0 Milliamps -> 1.5 Kiloohms in seriell with 180 Ohms
10.0 Millamps -> 820 Ohms

1S2473.jpg
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