PT26-51B/TR8

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Optical sensors are devices which are able to detect the presence of an incident light in order to produce an electrical signal. Phototransistors are one type of optical sensor which combine the characteristics of a transistor and those of a photodiode. The phototransistor PT26-51B/TR8 is widely used among industries and is a popular choice for applications requiring a fast response time. This article will discuss the application field and working principle of the PT26-51B/TR8 optical sensor.

The application field of the PT26-51B/TR8 phototransistor varies greatly depending on the need and vision of the user. Commonly, those who need an immediate response from a photo-detector have commonly used this type of phototransistor, as it is able to detect the presence of an incident light and provide an analog or a digital signal in milliseconds. Around the world, these phototransistors have been used in many fields such as in the automotive industry, in medical instruments, in commercial products and even in night vision systems. Its versatility and highly efficient behavior makes them a preferred choice for many types of products.

The working principle of the PT26-51B/TR8 phototransistor is fairly simple. It consists of a photodiode which acts as a photosensitive element within the chip. When the photodiode is exposed to an incident lights, its light sensitive properties allow it to generate free carriers which in turn stimulate the transistor to conduct. The enhanced current flow from the collector to the emitter forms an analog or digital signal output based on the user requirements.

The PT26-51B/TR8 phototransistor features several important properties which makes it a popular choice for users. It has a fast switching time, featuring a time to turn on of less than 0.3ms, an operating temperature range of -20°C to 70°C, and a current gain of 100mA at a 1mW input power. It is also able to withstand high voltages, up to a maximum of 36V, making it suitable for high voltage applications. Additionally, it has a high output sensitivity, allowing it to detect the presence of an incident light in environments with low illumination, making it particularly suitable for night vision systems.

Overall, the PT26-51B/TR8 phototransistor is a reliable and efficient device which is suitable for many applications. Its fast switching time, wide operating temperature range and high output sensitivity makes it ideal for low light environments. Its ability to withstand high voltages also makes it a popular choice for high voltage applications, and its versatility and cost efficiency allows it to be used in many industries and products. As such, it is no surprise that the PT26-51B/TR8 phototransistor is often referred to as the “golden standard” for optical sensors.

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