CDS Photoresistors (PGM)

Light-Dependent Photoresistors for Sensor Applications.

The cadmium sulfide (CdS) or light dependent resistor (LDR) whose resistance is inversly dependent on the amount of light falling on it, is known by many names including the photo resistor, photoresistor, photoconductor, photoconductive cell, or simply the photocell.

A typical structure for a photoresistor uses an active semiconductor layer that is deposited on an insulating substrate. The semiconductor is normally lightly doped to enable it to have the required level of conductivity. Contacts are then placed either side of the exposed area.

The photo-resistor, CdS, or LDR finds many uses as a low cost photo sensitive element and was used for many years in photographic light meters as well as in other applications such as smoke, flame and burglar detectors, card readers and lighting controls for street lamps.

Providing design engineers with an economical CdS or LDR with high quality performance, Direct Electronics now offers commercial grade PGM photoresistor. Designated the PGM Series, the photoresistors are available in 5mm, 12mm and 20mm sizes, the conformally epoxy or hermetical package offer high quality performance for applications that require quick response and good characteristic of spectrum.

Direct has been designing and manufacturing high performance light dependent resistors for decades. Our product offerings are extensive and our experience with custom photoresistor is equally extensive. Contact us with your specific needs.

Download complete specification - Cds Photoresistors.

Features :
  1. Quick Response
  2. Reliable Performance
  3. Epoxy or hermetical package
  4. Good Characteristic of Spectrum
Applications :
  1. Photoswitch
  2. Photoelectric Control
  3. Auto Flash for Camera
  4. Electronic Toys, Industrial Control
5mm CdS Photo Resistors (PGM) Configurations & Dimensions
Epoxy resin package
5mm CdS Photoresistors Appearance PGM5**** series
Epoxy resin package
5mm PGM5**** series Dimensions (Unit: mm)
Hermetical package
5mm CdS Photoresistors Appearance PGM55**-MP series
Hermetical package
5mm PGM55**-MP series Dimensions (Unit: mm)
Note : All dimensions are in mm and NTS.
Epoxy resin package 5mm CdS (PGM5****) Electronics Characteristics
Model Vmax (VDC) Pmax (mW) Ambient
Temp
(°C)
Spectral Peak (nm) Photo
Resistance
(10Lx) (KΩ)
Dark Resistance (MΩ)min γ
min
Response Time
(ms)
Rise Decay
PGM5506 100 90 -30 ~ +70 540 2 ~ 6 0.15 0.6 30 40
PGM5516 100 90 -30 ~ +70 540 5 ~ 10 0.2 0.6 30 40
PGM5526 150 100 -30 ~ +70 540 8 ~ 20 1.0 0.6 20 30
PGM5537 150 100 -30 ~ +70 540 16 ~ 50 2.0 0.7 20 30
PGM5539 150 100 -30 ~ +70 540 30 ~ 90 5.0 0.8 20 30
PGM5549 150 100 -30 ~ +70 540 45 ~ 140 10.0 0.8 20 30
PGM5616D 150 100 -30 ~ +70 560 5 ~ 10 1.0 0.6 20 30
PGM5626D 150 100 -30 ~ +70 560 8 ~ 20 2.0 0.6 20 30
PGM5637D 150 100 -30 ~ +70 560 16 ~ 50 5.0 0.7 20 30
PGM5639D 150 100 -30 ~ +70 560 30 ~ 90 10.0 0.8 20 30
PGM5649D 150 100 -30 ~ +70 560 50 ~ 160 20.0 0.8 20 30
PGM5659D 150 100 -30 ~ +70 560 150 ~ 300 20.0 0.8 20 30
Hermetical package 5mm CdS (PGM55**-MP) Electronics Characteristics
Model Vmax (VDC) Pmax (mW) Ambient
Temp
(°C)
Spectral Peak (nm) Photo
Resistance
(10Lx) (KΩ)
Dark Resistance (MΩ)min γ
min
Response Time
(ms)
Rise Decay
PGM5506-MP 100 90 -30 ~ +70 540 2 ~ 6 0.15 0.6 30 40
PGM5516-MP 100 90 -30 ~ +70 540 5 ~ 10 0.2 0.6 30 40
PGM5526-MP 150 100 -30 ~ +70 540 8 ~ 20 1.0 0.6 20 30
PGM5537-MP 150 100 -30 ~ +70 540 16 ~ 50 2.0 0.7 20 30
PGM5539-MP 150 100 -30 ~ +70 540 30 ~ 90 5.0 0.8 20 30
PGM5549-MP 150 100 -30 ~ +70 540 45 ~ 140 10.0 0.8 20 30