are t803 diodes isolated

[andy_con]

guys do 405nm t803 diodes have isolated cases?

so don't need to be electrically insulated from each other?

andy

 

[daguin]

The violet diode is case neutral

Peace,
dave

 

[Spyderz20x6]

I thought you've built like 100's of 803T leadlights : :-?

 

[daguin]

I thought you've built like 100's of 803T leadlights : :-?

Sometimes we do things without really knowing "why"

Peace,
dave

 

[andy_con]

i have indeed built lots of leadlights but ive always used two wires + and -

so just thought i would ask the question

 

[sk8er4514]

as I'm assuming you already know, for PHR803Ts you can solder either the + pin to the case pin and make it case positive, or you can solder the - pin to the case pin and make it case negative.

-Kendall

 

[andy_con]

yeah but i dont solder anything to the case lol

 

[Spyderz20x6]

That's the easier way...

 

[andy_con]

lol not in my eyes

 

[Spyderz20x6]

lol not in my eyes

Well then you need to get your eyes checked :

 

[andy_con]

lol

 

[Kage]

Generally it is probably best to connect the case to either the + or - lead to prevent it from "floating" which could make it susceptible to static discharges.

 

[wolfblue]

In the good old days, the case was connected internally to one lead. And the third lead was the photo detector for feedback. IIRC. But I have been letting it float lately. I build portable bare aluminum Labs. And it seems counterintuitive that I would want my hand in contact with one side of the laser die. Seems more likely to pop the diode changing batteries or whatever.

Am I thinking right? Of course I have a years old leadlight that still works. Should I go back and bridge the case leads on my new lasers?

--John