how to identify diode type?

[jtronix]

how to identify diode??
package: mini melf
Colour band: yellow
no marking on diode just it has yellow colour band .


please tell me how to identify diode??

 

[HMS1021]

Without a number or other identifier it is not possible to know what it is. It sounds like a Vishay Zener. If you can measure the junction voltage it will identify the technology.

 

[tpetar]

That small parts often can be identified by colors or some markings, but for exact value of part such as zener voltage, you should do some tests.


Best regards,
Peter