SMD zener diode code

[Jerry King]

i have find a zener in frequency inverter
i cant understand the rating of diode..
i can see 2 line of word on it 1st is DT and 2nd is VD and the line represent to cathode on dt side.
plz tell me what rating of this diode.....

 

[Jerry King]

plz help me

 

[colin55]

What do you want to know?

1. Remove the zener diode and connect a 470R resistor in series.
2. Connect the two to 12v.
3. Measure the voltage across the diode.
4. Connect another 470R across the 470R.
5. Reverse the zener and repeat.

Provide answers:

 

[Jerry King]

Plz tel me what the polarity of diode and when 2 470r in parallen then we measure zener voltage?

 

[colin55]

Plz tel me what the polarity of diode

You don't have to know. Just answer my questions.

 

[canadaelk]

Google "smd code" and you shall find! E

 

[ectt]

usually for protection in ckt,
the side with a bar is -ve, usually tapped to the voltage path; the other side may wire to ground. once voltage path voltage exceeds its nominal voltage value, it will "connect the current down to "ground" and protect the loading part from exceeded voltage damage.

 

[colin55]

the side with a bar is -ve,

Zener diodes and all other diodes do not have a "positive" or "negative."

They have a CATHODE - and this end of the diode is identified by a line or mark or dot or dimple.
They way a diode is connected in a circuit depends on its function.