Hello all,
First, sry for my english, im french

( plz correct me

)
I want to create an IR Pen and an IR array.
- I see that the TSAL6400 is the best for IR Pen. I want to know, if the TSAL6400 (50°/1.5V) is the best for array ? Or if a led with a greater angle will not be better ?
- I want to know if somebody already has tryed a 950nm LED (like : TSUS5400 (44°) or TSUS5202 (30°) at 1.3V , or maybe at 1.6V TSAL5300 (44°) or TSAL6100 (20°) ?
Other question if i put a TSAL6400 on a 1.5V battery(AAA), do i must use a resistor ?
Thanks for all !
AnX