Taiwan Factory: +886 2 29810109

http://www.token.com.tw

rfq@token.com.tw

China Factory: +86 755 26055363

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 Product Introduction

Features :

 Good batch consistency, small static current.

 Fast response speed, stable performance, beautiful

appearance.

 The effective control distance is greater than 1.5

meters.

 Low current loss in the static.

Applications :

 Replace the traditional CDS photoresistor.

 Cadmium and lead free with RoHS compliant.

 Applicable to control all kinds of light control

toys and Infrared testing equipment.

A phototransistor is known as a device in which turns light source energy

into electric energy. Phototransistors are very close to photoresistors but

produce both current and voltage, while photoresistors simply produce

current. The reason is a phototransistor includes a bipolar semiconductor

and targets the energy this can be transmitted via it.

Phototransistors are light-sensitive transistors. A common type of

phototransistor resembles a bipolar transistor with its base lead removed

and replaced with a light-sensitive area. This is why a phototransistor has

only 2 terminals instead of the usual 3. However, when the light-sensitive

region is exposed to light, a small base current is generated that controls a much larger

collector-to-emitter current.

Token PT-A2-AC-850 family with environmentally friendly photosensitive sensors, control sensitivity

under low illumination, stable current signal output under strong light source. Multiple light at the

same time can be used to ensure consistent photosensitive effect, not false trigger. Meet the latest

environmental requirements of toys. Applicable to all kinds of light control lighting products (such as

night lights, lawn lamps, solar lights, etc.), automatically adjust the background light (such as LCD,

mobile phones, cameras, computer cameras, security monitoring machines, etc.).

The PT-A2-AC-850 ambient light sensor, commonly used in infrared reception, Ultra-thin multi-point

infrared touch screen, and all kinds of high-light or visible light interference strong products, such as

various types of infrared light control, infrared on the radio, infrared reflection and other electronic

products.

For the convenience of installation in all kinds of products in any position, different sizes are available

upon request. So that product consistency is better, more market competitiveness. It is also achievable

to provide the bright current / dark current (bright resistance / dark resistance) for the most suitable

product. Please contact our sales or link to Token official website “Light Sensors” for more

information.

With RoHs compliant, Token phototransistors are available in a

wide range of packages.