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Low heat, energy saving, low power consumption, long service life.
Specification:
Receive Wave Range : 400-1100 nm
Response Peak Wavelength：940 nm
Receving Angle : 40°
Material：Si, Plastic, Metal
Head Color : Clear
Head Size : 3 x 4mm / 0.12 x 0.16 inch (D*H)
Pin Dia : 0.4 mm / 0.016 inch
Total Length: 33mm / 1.3 inch
Package Type: DIP(Dual In-line Package)
Polarity: Anode (Longer Part) | Cathode (Shorter Part)
Package Content: 10pcs x Photodiodes
David Price
Reviewed in the United States on August 8, 2021
Size of these is perfect for my use. Using for a HO slotcar racing lap counter/timer. Sensor is the tiny dot under the light behind the car.
MAParker
Reviewed in the United States on November 16, 2021
One * subtracted because these 'photodiodes' are actually phototransistors. A photodiode should produce a small voltage (100s of mV and maybe more) across the two terminals when light strikes the photosensitive surface whereas a phototransistor will produce very little voltage (less than 10mV). These did not show any voltage when exposed to light. To use these phototransistors, consider them to be NPN transistors with the long lead the emitter. As an example, connect the long lead to a resistor (say 4.7k) and the other end of the resistor to ground (negative terminal of a 5V voltage supply or 9V battery etc.), and then connect the collector to the positive terminal of the supply. The voltage across the resistor should increase as more light strikes the photosensitive surface. These are very nice phototransistors. By the way, keep in mind that phototransistors show nonlinear response to light intensity. If you want a very linear response to light intensity, use a real 'photodiode' (an inexpensive one is BPW34) but there are also many better ones on amazon (such as 2DU3).
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