PHR 803T 405nm Diode Extract

[Anthony16r]

Yes I know it's to protect the laser diode from reverse polarity but I heard on the internet that shottky and zener diodes could be used for this purpose(not laser related). So I wanted to be sure. Also I have some 1N4001 diodes but I couldn't find them in a smd version whereas shottky and zener diodes exist in smd.

 

[Slavixs]

i too have some 1N4001 diodes!

 

[Lonewolf]

Yes I know it's to protect the laser diode from reverse polarity but I heard on the internet that shottky and zener diodes could be used for this purpose

I don't think a zener will work for reverse polarity protection.

 

[KiLLrB]

I don't think a zener will work for reverse polarity protection.

It will up to a preset voltage and then it conducts. But as for this application definately no!

 

[Benm]

Forget about that diode entirely - just omit it.

As for the capacitor: this can be anything within reason really, 1 uF is an indication, but it will work with a 100 uF of reasonable quality too, but even with smaller (100 nF or so) ceramic caps it will be fine.

I would suggest adding another capacitor at the input of the circuit - its recommended by the manufacturer, and sometimes helps solve otherwise very tricky problems. Anyting 1 uF to 100 uF should be fine here too. Just make sure its rated for at least the input voltage.

 

[LarryDFW]

Forget about that diode entirely - just omit it.

Can the diode be replaced by any shottky, zener or 1N400x diode of any type?

Always use a Schottky diode for ELECTROSTATIC protection.
Forward voltage is lower.
For 30 cents, it is a very good protection device.

LarryDFW

 

[KiLLrB]

Always use a Schottky diode for electrostatic protection.
Forward voltage is lower.
For 30 cents, it is a very good protection device.

LarryDFW

I think diodes are a handy comopnent to use for reverse polarity i always use them when i can.

 

[Slavixs]

I readed that from PHR i can get the red lasser too (it is in IR diode).. That diode can make a visible beam? If can, what i need to run that diode too?! Thanks!

 

[Eudaimonium]

I readed that from PHR i can get the red lasser too (it is in IR diode).. That diode can make a visible beam? If can, what i need to run that diode too?! Thanks!

FIrst of all, you are spellin 'laser' wrong all the time, one 's' is needed.

Second, the red/IR diode combo from PHR is not worth the trouble, people have been running the red diode at 50mA max, no burning capablities at all.
Not worth the aixiz module IMHO.