PT19-21B/L41/TR8 Allicdata Electronics

PT19-21B/L41/TR8 Sensors, Transducers

Allicdata Part #:

1080-1383-2-ND

Manufacturer Part#:

PT19-21B/L41/TR8

Price: $ 0.00
Product Category:

Sensors, Transducers

Manufacturer: Everlight Electronics Co Ltd
Short Description: PHOTOTRANSISTOR FLAT BK MINI SMD
More Detail: Phototransistor 940nm Top View 0603 (1608 Metric)
DataSheet: PT19-21B/L41/TR8 datasheetPT19-21B/L41/TR8 Datasheet/PDF
Quantity: 120000
Stock 120000Can Ship Immediately
Specifications
Series: --
Packaging: Tape & Reel (TR) 
Part Status: Active
Voltage - Collector Emitter Breakdown (Max): 30V
Current - Collector (Ic) (Max): 20mA
Current - Dark (Id) (Max): 100nA
Wavelength: 940nm
Viewing Angle: --
Power - Max: 75mW
Mounting Type: Surface Mount
Orientation: Top View
Operating Temperature: -25°C ~ 85°C (TA)
Package / Case: 0603 (1608 Metric)
Description

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Phototransistors are a type of optical sensor used to detect the presence of visible light. They work on a principle known as photoelectric conversion which, when a light is shone onto the phototransistor sensor, creates electric current. Commonly used in areas such as robotics, security systems, automated lighting systems and industrial control, these sensors are useful in measuring the amount of light that is present in a given environment.

PT19-21B/L41/TR8 is a type of phototransistor which contains a phototransistor and an emitter-base junction diode. It provides a broad response to light intensity, with its peak sensitivity being at its peak wavelength of 880nm. This makes it suitable for use in applications that require high sensitivity such as infrared (IR) sensing, motion detection, surveillance, and robotics.

The main component of a PT19-21B/L41/TR8 is an NPN bipolar junction transistor (BJT) housed inside a transparent epoxy package. The main difference between a phototransistor and a normal BJT is that the base of a phototransistor is exposed, allowing light to enter. When light is detected, the base of the phototransistor acts as a semiconductor junction, creating an electric current. This electric current is then directed out of the phototransistor, through an output resistor, and into an electrical device.

PT19-21B/L41/TR8 phototransistors have a wide range of applications, ranging from simple home automation devices to more complex security systems. By connecting PT19-21B/L41/TR8 to a microcontroller, you can create a system for detecting motion or measuring light intensity. For example, these sensors can be used to detect when people are present in a room. They can also be used to detect the presence of nearby lights, allowing for automated lighting systems. Additionally, they can be used for IR detection in surveillance and robotics systems.

In addition to the uses already mentioned above, PT19-21B/L41/TR8 phototransistors can also be used to create long-term backups of important data. Due to their high response speed, these sensors can be used to detect subtle changes in light and store them in memory storage devices. This means that data can be backed up in case of a power outage, providing an invaluable backup system.

Overall, PT19-21B/L41/TR8 phototransistors are a versatile type of optical sensor that can be used for a variety of applications. They are reliable, accurate, and have a fast response time, making them suitable for use in a wide range of fields. They are an excellent choice for applications that require a reliable and affordable option for sensing light intensities.

The specific data is subject to PDF, and the above content is for reference

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