NORPS Series Photoresistors with Moisture Proof Casings
The NORPS series CdS photoresistors from Advanced Photonix are cost-effective, compact light sensors designed for visible light detection (400–700 nm), with peak sensitivity around 550 nm—closely mimicking the human eye.
Several Models in Moisture Proof Casings
These LDRs feature a durable, moisture-resistant TO-18 package with radial leads, making them ideal for through-hole mounting in space-constrained or consumer-grade applications. Their resistance decreases as light intensity increases, ranging from 1 MΩ in darkness (after 15 seconds) to between 5.4 kΩ and 12.6 kΩ at 10 lux, depending on the model.
Dependable, Cost-Effective Solution
With an operating temperature range of -60°C to +75°C and a maximum voltage of 250 V, NORPS detectors provide reliable performance in varied environments. Ideal for ambient light detection, automatic lighting, display brightness control, and general light monitoring, they combine affordability, stability, and eye-like sensitivity. This makes them an excellent choice for OEMs seeking dependable, analog light sensors.
Markets & Applications
- Automatic Lighting Controls: Adjust lighting based on ambient conditions.
- Consumer Electronics: Brightness control in displays and indicators.
- Security Systems: Light level detection for triggering alarms or cameras.
- Industrial Automation: Monitoring light levels in manufacturing processes.
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Benefits
- Cost-Effective: Ideal for budget-sensitive applications without compromising on performance.
- Compact and Durable: The TO-18 package ensures a small footprint and robust protection against environmental factors.
- Human-Eye-Like Response: The resistance change closely follows the human eye's sensitivity to light, making it suitable for applications like ambient light sensing.
Features
- Spectral Sensitivity: Optimized for the visible light spectrum (400–700 nm), with a peak sensitivity at 550 nm.
- Resistance Characteristics: Dark Resistance: Approximately 1 MΩ @ 15 s, Illuminated Resistance: Ranges from 5.4 kΩ to 12.6 kΩ @ 10 lux.
- Peak Voltage: 250 V.
- Operating Temperature: -60°C ~ +75°C.
- Package Type: Radial leaded, TO-18 package suitable for through-hole mounting.
Datasheets
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