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TLP421

Name: TLP421
Rating: 4.7 (12 reviews)

Transistor Output Optocouplers (TRANSISTOR),DISCON(08-10)/PHASE-OUT(10-04)/OBSOLETE(10-07),

Производитель
Мфр. Часть #TLP421
Пакет
Лист данных
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Спецификации

Standard Pack Qty

100

Обзор

Description

TLP421 is an optoisolator (also known as an optocoupler) that provides electrical isolation between its input and output, primarily used in digital communication and signal transmission. It consists of a gallium arsenide (GaAs) infrared light-emitting diode (LED) and a phototransistor, which are encased in a compact package. When a voltage is applied to the input LED, it emits infrared light, which activates the phototransistor on the output side, allowing current to flow.
Key features of the TLP421 include high isolation voltage, low input current, and fast switching speeds, making it suitable for various applications, such as microcontroller interfacing, signal isolation, and protection circuits. It typically supports a wide operating temperature range and provides reliable performance in noisy environments. Overall, the TLP421 is essential for integrating digital systems while ensuring safety and signal integrity.

Features

The TLP421 is an optoisolator (also known as an optocoupler) designed for various applications that require electrical isolation. Key features include:
1. Isolation Voltage: Up to 5000 Vrms, providing robust protection against high voltage spikes.
2. High Speed: Typically operates with a propagation delay of around 1 µs, suitable for high-speed switching applications.
3. Phototransistor Output: The device has a phototransistor output, allowing it to control higher current loads.
4. Wide Operating Temperature Range: -40°C to +100°C, making it suitable for industrial and harsh environments.
5. Low Input Current: Requires a low input current for activation, enhancing energy efficiency.
6. Compact Package: Usually available in a 4-pin DIP or surface-mount package, facilitating space-saving designs.
7. High Gain: Offers a high current transfer ratio (CTR), supporting various control applications.
These features make the TLP421 ideal for use in data communication, power supply feedback, and signal isolation in electronic circuits.

Package

The TLP421 is packaged in a 4-pin DIP (Dual In-line Package) configuration. It is designed for surface mounting and features a compact footprint suitable for various electronic applications.

Pinout

The TLP421 is an optoisolator (also known as an optocoupler) manufactured by Toshiba. It features a total of 4 pins.
Pin Configuration:
1. Anode (A): This is the input side where the positive voltage is applied to the LED.
2. Cathode (K): This is the input side where the negative voltage is connected, completing the LED circuit.
3. Collector (C): This is the output side connected to the phototransistor collector.
4. Emitter (E): This is the output side connected to the phototransistor emitter.
Functions:
- The TLP421 provides electrical isolation between its input (LED) and output (phototransistor) sections.
- When current flows through the LED, it emits light, activating the phototransistor on the output side, allowing current to flow from collector to emitter.
- It is commonly used in applications where signal isolation is required, such as switching power supplies and signal processing systems.

Manufacturer

The TLP421 is manufactured by Toshiba Corporation, a multinational conglomerate based in Japan. Toshiba is primarily known for its diverse range of products and services, including electronics, semiconductors, and digital solutions. Founded in 1875, the company operates in various sectors such as energy, infrastructure, storage solutions, and consumer electronics. Toshiba is particularly recognized for its innovations in the semiconductor industry, and the TLP421 is a type of optoisolator, which is used in applications requiring electrical isolation between different parts of a circuit. The company is committed to sustainability and technological advancement, serving both industrial and consumer markets globally.

Application

The TLP421 is an optocoupler used in various applications, including signal isolation in industrial automation, power supply circuits, motor control, and telecommunications. It provides electrical isolation between different circuit sections, enhances safety, and helps in reducing electromagnetic interference. Additionally, it is utilized in data communication systems and for switching power supplies in consumer electronics.

Equivalent

Equivalent products to the TLP421 optoisolator include the HCPL-2630, MOC3063, ILQ-74, and TLP222A. These components provide similar functional capabilities in terms of isolation voltage, input/output characteristics, and packaging. Always verify specific electrical parameters and ratings to ensure compatibility with your application.

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