Diode Questions, please respond

[redelman]

1st question- I remember reading a blog saying that a diode has to be fitted in an axis module "PROPERLY". Is there a certain way you have to put a SLD1239JL-54 16x diode inside the axis module to burn or do you just snap it in?

2nd question- After being told that a SLD1239JL-54 diode needs a heatsink to work at above 200 mA, this obviously means that high heat can damege a diode. Does that mean that just using a soldering iron to solder together the diode would hurt it? Is there some special way you have solder a diode?

3rd question- Does looking INDIRECTLY (not shining directly into your eye but standing like in this diagram below this next line  and looking at it) harm your eyes if it is a laser that is more then 200 mA?  

____________
Laser Beam

|<--------you

 

[daguin]

1st question- I remember reading a blog saying that a diode has to be fitted in an axis module "PROPERLY". Is there a certain way you have to put a SLD1239JL-54 16x  diode inside the axis module to burn or do you just snap it in?

2nd question- After being told that a SLD1239JL-54 diode needs a heatsink to work at above 200 mA, this obviously means that high heat can damege a diode. Does that mean that just using a soldering iron to solder together the diode would hurt it? Is there some special way you have solder a diode?

3rd question- Does looking INDIRECTLY (not shining directly into your eye but standing like in this diagram below this next line  and looking at it) harm your eyes if it is a laser that is more then 200 mA?  

____________
Laser Beam

|<--------you

1st -- The diode must be pressed into the module until it is slightly recessed into the module. The technique of pressing it into the module head by using the back of the module only presses it in until it is "flush."

2nd -- Solder very quickly. "Tin" the contacts and use rosin. Hold the contacts together with a "helping hands" / "extra hands" type unit, get a small amount of solder on the iron, and just "touch" the contacts long enough to get the solder to "flow."

3rd -- This depends on what the surface is like, if it is focused, and how long you look at it. Shiny, smooth surfaces can reflect light virtually unchanged from right out of the lens (specular reflection). Flat, dark surfaces reflect less coherent light. Focused is worse than unfocused. If you are going to be "burning" stuff always use goggles. If you are going to be using your laser (above 50mW) indoors, use goggles. There are "exceptions" to these "rules" of course, but this will give you a good base of thought. Remember, when in doubt, err on the side of safety. You (and those around you) only get ONE SET of eyes. You can get as many seeing eye dogs as you need through the rest of your life.

Peace,
dave

 

[BeavRat]

Not trying to hijack the thread, but whats the easiest way to push the diode further into the lens than flush?

 

[rog8811]

Like this...

Regards rog8811