Radial-Lead LDRs for Fast, Reliable Light Sensing

The PDV series offers fast response, radial leads, and broad resistance options.

The PDV series CdS photoresistors offer fast response, radial leads, and a broad resistance range for flexible light sensing. Designed for easy PCB mounting, they suit dynamic applications like lighting control and flame detection. They stand out for their quick reaction times and versatile performance at a compact form factor.

PDV Series: Quick Response Photoresistors

The PDV series from Advanced Photonix consists of Cadmium Sulfide (CdS) light-dependent resistors (LDRs) and is designed for reliable, analog light sensing across a broad range of applications. In visible light (400–700 nm), The spectral response of these photoresistors closely mirrors the sensitivity of the human eye. PDV series LDRs are ideal for detecting ambient light levels in devices like automatic lighting controls, flame detectors, and consumer electronics. Their radial-leaded design ensures easy integration into printed circuit boards, making them a practical choice for OEMs and engineers seeking responsive, space-efficient sensors.

The PDV series features models with dark resistances ranging from 0.5 MΩ to over 10 MΩ, and light resistance from approximately 300 Ω to 10 kΩ at 10 lux, depending on the specific component. Peak sensitivity is typically centered in the green spectrum around 540–550 nm. Maximum operating voltage is generally 150–250 V, with power dissipation ratings up to 100 mW. Rise and fall times are typically between 25 ms and 100 ms and provide outstanding response speed. Operating temperature range spans from -25 °C to +75 °C.

Markets & Applications

Ambient Light Sensing
Display and Screen Dimming
Flame and Light Detection
Optical Measurement and Light Meters
Control Circuits and Light-Triggered Switching

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Benefits

Fast Light Response – Enables quick adaptation in dynamic lighting conditions, ideal for flame detection, light meters, and responsive control systems.
Easy PCB Integration – Radial-leaded design allows for simple, reliable through-hole mounting in compact circuit layouts.
Versatile Performance Range – Broad selection of models with varying resistance and sensitivity to suit diverse application needs.
Human-Eye-Like Sensitivity – Analog response closely mimics natural vision, ensuring accurate ambient light detection for smooth dimming and control.

Features

Spectral Response: 400 nm to 700 nm, (Peak sensitivity typically around 540–550 nm)
Dark Resistance (depending on the model): 0.5 MΩ to >10 MΩ
Light Resistance @ 10 lux: Typically 300 Ω to 10 kΩ
Maximum Operating Voltage (depending on components): Up to 150 V–250 V DC,
Power Dissipation: up to 100 mW (with appropriate derating above 25 °C)
Response Time: Rise Time: ~30 ms, Fall Time: ~40–100 ms
Operating Temperature Range: -25 °C to +75 °C
Mounting Type: Radial leads for through-hole PCB assembly
Package Type: Compact epoxy-coated, cylindrical body

Datasheets

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