PT550 Ambient Light Sensor
The PT550 is a high-sensitivity, DIP-packaged silicon phototransistor with a peak sensitivity wavelength of 550nm, simulating the human eye's spectral response. It serves as an ideal replacement for traditional CDS photoresistors and is specifically designed for infrared monitoring applications, enabling precise control of infrared lights under low-light conditions.
Download PDF DatasheetProduct Features
- ◆ Photosensitive peak wavelength of 550nm, simulating human eye response
- ◆ High reliability
- ◆ Low power consumption
- ◆ RoHS compliant
Technical Specification
| Parameter | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Photosensitive Peak Wavelength | - | - | 550 | - | nm |
| Sensitivity Wave Width | - | 400 | - | 700 | nm |
| Operating Voltage | - | 1 | 5 | 10 | V |
| Photo-current (IL1) | VCC=5V, Ev=10Lux | 2.5 | 4.0 | 5.5 | μA |
| Photo-current (IL2) | VCC=5V, Ev=30Lux | 7.5 | 12 | 16.5 | μA |
| Photo-current (IL3) | VCC=5V, Ev=100Lux | 25 | 40 | 55 | μA |
| Dark Current | VCC=5V, 85°C, Ev=0Lux | - | - | 0.8 | μA |
| Response Time (tr/tf) | VCC=5V, RL=1000Ω | - | 4.5 | - | ms |
| Operating Temperature | - | -30 | - | +85 | °C |
