1. Home
  2. Electronics Design
  3. LED Vf 1.9v is normal?

LED Vf 1.9v is normal?

Hi All,

If LED's Vf is 1.9v, is that normal?

I remember it was about 0.7v, am I right?

Best regards, Boki.

Reply to
Boki
Loading thread data ...

Yes- even ordinary LEDs hit 2.2V and the high intensity jobs 3.5V- nothing unusual about 1.9V.

No- that is not right, 0.7V is for an ordinary rectifying diode.

Reply to
Fred Bloggs

Fred Bloggs =E5=AF=AB=E9=81=93=EF=BC=9A

Got it, thank you very much!

Best regards, Boki.

Reply to
Boki

Fairly.

No. That would be a silicon diode at lowish current.

It depends on forward current. I run most of my leds @ around 3-10 mA and use a typical figure of 1.3V.

I suggest you look at a data sheet for simple info like this. It's all there.

Graham

Reply to
Pooh Bear

That's reasonable, but it depends on the color. Red is lowest, blue is highest. Bandgaps and all that.

John

Reply to
John Larkin

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.