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Your cart is empty. Description:
Low heat, energy saving, low power consumption, long service life.
NOTE: IR Emitter ONLY, IR Reciever is NOT included.
Specification:
Wavelength: 940nm
Voltage: DC 1.2-1.3V
Emission Distance: 7 Meters / 23Ft
Head Size: 5.6 x 8.5mm / 0.22 x 0.33 inch ( Max.D*H)
Total Length: 35mm / 1.38 inch
Polarity: Anode (Longer Part) | Cathode (Shorter Part)
Package Content:
100pcs x Infrared Emitter Diode
systemguy
2025-02-12 18:26:34
These parts are probably as advertised so I can't really dock more than 1 star. They supposedly can operate safely at 1.25 V bias each, so I put 4 in series to get 5 V. What is not included in the literature provided is that when you do that, the 4 LEDs in series only pull 18 milliamps (0.018 amps) with 5 volts applied (1.25 V each). That results in a power output of 0.09 W for each 4, or 2.25 W for 25 groups. That is the total power you can get from the 100 LEDs. That is probably OK for IR imaging (if you can use This long wavelength for that), but I bought these for a "do it yourself" version of a medical IR lamp. The heat from them may penetrate deeply at that long wavelength, but I suspect that you won't feel a thing. They made no claims about that use, so I can't fault them much. I will probably build it anyway, but do not expect to feel much effect. The current that results from the maximum 1.25 V bias would have been useful information in the product description.(Further Information: I noticed that the "5V" USB supply I used actually puts out 5.2V. That puts the individual voltage for 4 LEDs in series at 1.3V, the maximum. At that voltage, the current through 4 series LEDs is 30 ma (0.030 amps), so the increased power for 25 groups of 4 at 5.2V is now 3.9W, which is better, but still low. Most of the medical arrays that I see for sale have total power considerably higher than that. Again, if these are intended for uses other than medical, this may be adequate.) Interesting Note: I found out that my cellphone camera can see the IR light from these LEDs, making it possible to see which ones are working properly.
Nick R.
2024-12-22 17:03:29
You can see not as strong as original but my receiver 18 inches away and its working fine.
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