Light sensors are most commonly present in industrial lighting, electronic devices, and automotive systems, where they provide settings to be adjusted automatically in response to changing ambient light conditions. By activating, switching off, or modifying features, ambient light sensors can conserve electric batteries and supply extra safety while eliminating the requirement for manual adjustments. Token offers a wide variety of ambient light sensors in leaded and surface mount packages, with photodiode or phototransistor outputs.
In portable electronic products, lowering the power consumption to supply the consumer with elevated battery existence is among today’s critical design factors. The liquid crystal display (LCD) which is connected backlighting are the more power hungry loads in portable products. Consequently, using an ambient light sensor (ALS) to optimize the whole process of the backlight LEDs under a number of ecological lighting situations is growing while, simultaneously, the most well-liked technology choices open to designers for sensing have shifted towards more integrated solutions.
Token chip ambient light sensors can be used in a variety of LCD-equipped portable products including PDAs, notebook PCs, digital cameras, video players, GPS-based navigation systems, and more. Any portable product by having an LCD is really a candidate for ALS technology to lessen power consumption.
Token taking the advantage of temperature compensation internal process on the chip, (PTA1AC3528-850) features one times higher temperature resistance than other similar products while working on high temperature environment. By selecting the accuracy of chips, under strict management of production process, chip visible light sensors finished batch consistency uniform. The consistency is 3 to 5 times higher on comparison of similar photosensitive devices.
Download complete specification Surface Mount Ambient Visible Light Sensor (PT-A1-AC-3528-850) PDF.
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Part NO. | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) | I (mm) | |
PT-A1-AC-3528-850 | 3.20 ± 0.1 | 3.50 ± 0.1 | 2.10 ± 0.1 | 2.80 ± 0.1 | 1.90 ± 0.05 | 1.81 ± 0.05 | 0.80 ± 0.2 | 1.50 ± 0.2 | 0.50 ± 0.1 |
Parameter | Symbol | Condition | Min. | Typ. | Max. | Unit |
Peak Wavelength | λp | \ | - | 850 | - | nm |
Spectral Response Bandwidth | λ | \ | 400 | - | 1100 | nm |
Collector-Emitter Breakdown Voltage | Bvceo | Ice=100µA Ee=0mW/cm2 |
30 | - | - | V |
Emitter-Base Breakdown Voltage | Bveco | Ice=100µA Ee=0mW/cm2 |
3 | - | - | V |
Collector-Emitter Saturation Voltage | Vce (sat) |
Ice=2mA Ee=1mW/cm2 |
- | - | 0.4∗ | V |
Photo Current | IL(1) | Vcc=5V Ev=10Lux |
2.5 | 3.5 | 5 | μA |
IL(2) | Vcc=5V Ev=30Lux |
7.5 | 10.5 | 15 | μA | |
IL(3) | Vcc=5V Ev=100Lux |
25 | 35 | 50 | μA | |
Collector Dark Current | Iceo | Vce=5V Ev=0Lux |
- | - | 0.1 | μA |
Rise Time | tr | Vcc=5V Ice=1mA RL=1000Ω |
15 | us | ||
Fall Time | tf | 15 |
Parameter | Symbol | Value | Unit |
Collector-Emitter Voltage | VCEO | 30 | V |
Emitter-Collector-Voltage | VECO | 3 | V |
Power Dissipation | PC | 70 | mW |
Operating Temperature Range | Topr | -25 ~ +85 | °C |
Storage Temperature | Tstg | -40 ~ +100 | °C |
Mounting :
Soldering :
Lead-forming and cuttings :
Storage:
The sensor is incorporated in the transparent resin package. Because of its sensitivity to humidity, the package is moisture-proof. When storing the sensor, do as instructed below.
Cleaning:
PT | - | A1 | - | AC | - | 3528 | - | 850 | ||||||||||||||||||
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