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Version 2010

Features

- Quick Response

- Reliable Performance

- Epoxy or hermetical package

- Good Characteristic of Spectrum

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.

PGM CDS Photoresistors

Applications

- Photoswitch

- Photoelectric Control

- Auto Flash for Camera

- Electronic Toys, Industrial Control

Light-Dependent Photoresistors for

Sensor Applications

CDS Light-Dependent

Photoresistors

TOKEN

http://www.token.com.tw/

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