02-LDR1
Manufacturer
Model
02-LDR1
Category
The 02-LDR1 photoresistor provides wavelength-specific resistance modulation for light intensity measurement applications. Its 540nm peak sensitivity and 5MΩ dark resistance make it suitable for ambient light-dependent control systems operating within industrial temperature ranges. The device requires careful thermal management during soldering and offers a cost-effective solution for basic light sensing needs.
Reference Pricing
Reference Stock
Specifications
| Dimensions | Diameter 5.0 mm, Width 4.3 mm, Height 3.4 mm |
| Light Sensitivity | 5.0 |
| Operating Current | 100 mW |
| Operating Voltage | 150 V |
| Optical Resistance | 50 - 100 KQ |
| Package Type | DIP |
| Response Time | 20 ms |
| Temperature Coefficient | Not Provided |
Function And Role
Core Function
Photoresistor for light-sensing applications
Key Characteristics
- Resistance range: 50kΩ~100kΩ (illuminance-dependent)
- Peak wavelength sensitivity: 540nm
- Dark resistance: 5MΩ
- Rise time: 20ms
- Operating temperature: -30°C~+70°C
Application Domains
Basic Scenarios
- Automotive headlight control systems
- Industrial light-sensitive switches
- Home automation lighting controls
Extended Scenarios
- Solar panel light intensity monitoring
- Security system external light detection
- Smart agricultural light cycle management
Precautions
| Soldering | Use heat sink clamps during soldering to prevent thermal damage |
| Current Limit | Max current < 1mA at 100V |
| Voltage Limit | Survives up to 100V reverse polarity |
| Thermal Management | Thermal resistance class: 2 (per IEC 60715) |
| Storage | Store in <10% relative humidity environments |
| Risk Warnings |
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Alternative Model Params
- Resistive range matching
- Wavelength sensitivity tolerance ±10nm
- Dark resistance variation <±10%
- Response time <50ms
Design Recommendations
| Layout | Place within 5mm of control ICs |
| Thermal | Use 0.3mm thick copper traces for heat dissipation |
| Compatibility | Pair with LM393 comparator circuits |
| Testing | Test under 0-10000lux dynamic range |
Market Positioning
| Strengths |
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| Weaknesses |
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