Document
TOKEN
PGM CDS Photoresistors
CDS Light-Dependent Photoresistors
Light-Dependent Photoresistors for Sensor Applications
Preview 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, Token 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.
Token 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.
Features - Quick Response - Reliable Performance - Epoxy or hermetical package - Good Characteristic of Spectrum
Applications - Photoswitch - Photoelectric Control - Auto Flash for Camera - Electronic Toys, Industrial Control
Version 2010
http://www.token.com.tw/
rfq token.com.tw
01 of 03
TOKEN
PGM CDS Photoresistors
Terminology
● Light Resistance : Measured at 10 lux with standard light A
Sensitive surface
Electrodes
(2854K-color temperature) and 2hr.
Ceramic substrate
preillumination at 400-600 lux prior testing. ● Dark Resistance :
Resin Encapsulation
Conducting resin
Measured at 10th seconds after closing 10 lux.
● Gamma characteristic :
Lead wires
Under 10 lux and 100 lux and given by γ = log(R10/R100) / log(100/10) = log(R10/R100)
R10, R100: resistance at 10 lux and 100 lux.
The tolerance of γ is ±0.1.
● Pmax :
100 CdS
Max. power dissipation at ambient temperature of 25°C.At higher ambient temperature,the maximum power permissible may be lowered.
80 60 40
CdSe Cd(S.Se)
Relative sensitivity(%)
● Vmax :
20
Max. voltage in darkness that may be applied to the device continuously.
0 400 500 600 700 800 900 1000
● Spectral peak :
Wavelength(nm)
Spectral sensitivity of photoresistors depends on the wavelength of light they are exposed to and
in accordance with figure ‘Spectral Response’.
The tolerance of spectral peak is ±50nm.
Physical and Environmental Characteristics
ITEM Solderability Temperature Changing
Constant humidity and heat
Constant load Temperature
Wire Terminals Strength
Vibration
CONDITIONS
Put the terminals into welding tank at temp. 230±5°C for 2±0.5s (terminal roots are 5mm away from the tin surface).
Change of temperature in accordance with: TA: -40°C TB: +60°C Number of cycles: 5 Exposure duration: 30min
1. Put the device in test box at Temperature: 60±5° CHumidity: 90-95% Illumination: 0lux Duration: 100h 2. Take the device and measure after24h at normal temperature and humidity.
At 25±5°C Illumination: 150lux at rated power Duration: 600h
Bend the wire terminal at its root to 90 degree,and then bend it to a opposite direction.
Frequency: 50Hz Swing: 1.5mm with Directions: parallel to ceramic substrate normal to ceramic substrate. Duration:2h
PERFORMANCE wetting>95% Drift of R10 = ± 20% No visible damage Drift of R10= ± 30% No visible damage
No visible damage
No visible damage
No visible dam
02 of 03
http://www.token.com.tw/
rfq token.com.tw
Version 2010
TOKEN
How to Order
PGM5516
Part Number Package
p
PGM5 CDS Photoresistors
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 03
TOKEN
Configurations & Dimensions
PGM5**** series Epoxy resin package
PGM55**-MP series Hermetical package
Note: All dimensions are in mm and NTS.
Ø 6.5 Ø5.5 Ø 0.5
3.4
PGM5 CDS Photoresistors
Ø5.1±0.2 Ø0.5 3.4
4 max 32±2
4.3±0.2
34±2
2.4Max
02 of 03
http://www.token.com.tw/
rfq token.com.tw
Version 2010
TOKEN
PGM5 CDS Photoresistors
Electronics Characteristics
Model
PGM5506 PGM5516 PGM5526 PGM5537 PGM5539 PGM5549 PGM5616D PGM5626D PGM5637D PGM5639D PGM5649D PGM5659D
Vmax Pmax (VDC) (mW)
100 90 100 90 150 100 150 100 150 100 150 100 150 100 150 100 150 100 150 100 150 100 150 100
Ambient Temp (°C)
-30 ~ +70 -30 ~ +70 -30 ~ +70 -30 ~ +70 -30 ~ +70
-30 ~ +70
-30 ~ +70 -30 ~ +70 -30 ~ +70 -30 ~ +70 -30 ~ +70 -30 ~ +70
Spectral.