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TLP421
+BOMTransistor Output Optocouplers (TRANSISTOR),DISCON(08-10)/PHASE-OUT(10-04)/OBSOLETE(10-07),
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ManufacturerToshiba
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Mfr. Part #TLP421
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In Stock14973
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Specifications
| Attribute | Value |
| Standard Pack Qty | 100 |
Overview
Description
TLP421 is a part of a series of optocouplers manufactured by Toshiba. These components are used in electronics to transfer electrical signals using light waves to provide isolation between different sections of a circuit. This isolation is crucial for protecting sensitive components from high voltages and noise interference. The TLP421 specifically features a phototransistor output, which makes it suitable for applications requiring a simple and low-cost solution for signal isolation.
Key characteristics of the TLP421 include good insulation performance, with an isolation voltage typically rated around 5,000 Vrms. It operates efficiently in a wide temperature range and can handle moderate data transfer speeds, making it adaptable to various industrial and consumer applications. The typical use cases involve power supply regulation, microcontroller input/output isolation, and interfacing between high and low voltage components.
Overall, the TLP421 optocoupler is valued for its reliability, compact size, and ease of integration within electronic systems, providing effective isolation and safeguarding vital components from electrical disturbances.
Key characteristics of the TLP421 include good insulation performance, with an isolation voltage typically rated around 5,000 Vrms. It operates efficiently in a wide temperature range and can handle moderate data transfer speeds, making it adaptable to various industrial and consumer applications. The typical use cases involve power supply regulation, microcontroller input/output isolation, and interfacing between high and low voltage components.
Overall, the TLP421 optocoupler is valued for its reliability, compact size, and ease of integration within electronic systems, providing effective isolation and safeguarding vital components from electrical disturbances.
Equivalent
The TLP421 is a phototransistor optocoupler. Equivalent products include:
1. PC817 by Sharp
2. LTV-817 by Lite-On
3. EL817 by Everlight
4. 4N25 series by General Instruments/ Vishay
5. SFH618A by Vishay
These devices perform similar functions, providing electrical isolation between input and output with a phototransistor output. Ensure to check their specific datasheets for exact compatibility regarding current transfer ratio, isolation voltage, and package type.
1. PC817 by Sharp
2. LTV-817 by Lite-On
3. EL817 by Everlight
4. 4N25 series by General Instruments/ Vishay
5. SFH618A by Vishay
These devices perform similar functions, providing electrical isolation between input and output with a phototransistor output. Ensure to check their specific datasheets for exact compatibility regarding current transfer ratio, isolation voltage, and package type.
Features
The TLP421 is an optoisolator or optocoupler device used to transfer electrical signals using light waves to provide electrical isolation between its input and output. Here are the key features:
1. Phototransistor Output: The TLP421 includes a phototransistor that receives light from an LED to output a corresponding electrical signal.
2. Isolation Voltage: It offers a high isolation voltage, typically around 5000 Vrms, ensuring effective separation between the input and output circuits.
3. Compact Package: Comes in a compact 4-pin DIP package, making it suitable for space-constrained applications.
4. Wide Operating Temperature Range: The TLP421 operates over a broad temperature range, typically from -55°C to 100°C.
5. High Data Transfer Rate: It supports moderate data transfer rates, suitable for various applications in digital communication.
6. Low Input Current: It features a low input current requirement, improving efficiency and reducing power consumption.
7. RoHS Compliant: The device is RoHS compliant, ensuring it meets environmental and safety standards.
This optocoupler is widely used in applications requiring electrical isolation, such as power supply circuits, microprocessor systems, and industrial automation.
1. Phototransistor Output: The TLP421 includes a phototransistor that receives light from an LED to output a corresponding electrical signal.
2. Isolation Voltage: It offers a high isolation voltage, typically around 5000 Vrms, ensuring effective separation between the input and output circuits.
3. Compact Package: Comes in a compact 4-pin DIP package, making it suitable for space-constrained applications.
4. Wide Operating Temperature Range: The TLP421 operates over a broad temperature range, typically from -55°C to 100°C.
5. High Data Transfer Rate: It supports moderate data transfer rates, suitable for various applications in digital communication.
6. Low Input Current: It features a low input current requirement, improving efficiency and reducing power consumption.
7. RoHS Compliant: The device is RoHS compliant, ensuring it meets environmental and safety standards.
This optocoupler is widely used in applications requiring electrical isolation, such as power supply circuits, microprocessor systems, and industrial automation.
Pinout
The TLP421 is a phototransistor optocoupler, typically used for isolating different sections of a circuit. It is commonly found in a 4-pin DIP (Dual In-line Package) configuration. Here are the pin functions:
1. Pin 1 (Anode): The anode of the internal LED. This pin is connected to the positive side of the input signal.
2. Pin 2 (Cathode): The cathode of the internal LED. This connects to the negative side or ground of the input signal.
3. Pin 3 (Emitter): The emitter of the phototransistor. This is typically connected to ground or a reference voltage on the output side.
4. Pin 4 (Collector): The collector of the phototransistor. It is connected to the positive side of the load or the supply voltage on the output side.
The TLP421 is used for signal isolation in applications requiring electrical separation between input and output, like power supply feedback loops, data communication interfaces, and microcontroller signal interfacing.
1. Pin 1 (Anode): The anode of the internal LED. This pin is connected to the positive side of the input signal.
2. Pin 2 (Cathode): The cathode of the internal LED. This connects to the negative side or ground of the input signal.
3. Pin 3 (Emitter): The emitter of the phototransistor. This is typically connected to ground or a reference voltage on the output side.
4. Pin 4 (Collector): The collector of the phototransistor. It is connected to the positive side of the load or the supply voltage on the output side.
The TLP421 is used for signal isolation in applications requiring electrical separation between input and output, like power supply feedback loops, data communication interfaces, and microcontroller signal interfacing.
Manufacturer
The TLP421 is manufactured by Toshiba Electronic Devices & Storage Corporation. Toshiba is a Japanese multinational conglomerate known for its diversified range of products and services, including electronic components, storage devices, and solutions for energy systems, infrastructure, and electronics. The TLP421 itself is an optocoupler, which is an electronic component used to transfer electrical signals using light waves to provide electrical isolation between its input and output.
Application
The TLP421 is an optoisolator, commonly used in applications requiring electrical isolation and signal transfer between different voltage levels. Key application areas include:
1. Power Supply Isolation: Providing isolation in power supplies to protect sensitive components from high voltages.
2. Microcontroller Interfaces: Facilitating communication between microcontrollers and higher voltage devices.
3. Switching Power Supplies: Used in feedback circuits to maintain isolation while monitoring and controlling output.
4. Industrial Automation: Assisting in isolation and signal transfer in automated control systems.
5. Telecom Equipment: Ensuring safe signal transmission in telecommunications infrastructure by isolating different network segments.
These applications leverage the TLP421's ability to provide electrical isolation while transmitting data signals.
1. Power Supply Isolation: Providing isolation in power supplies to protect sensitive components from high voltages.
2. Microcontroller Interfaces: Facilitating communication between microcontrollers and higher voltage devices.
3. Switching Power Supplies: Used in feedback circuits to maintain isolation while monitoring and controlling output.
4. Industrial Automation: Assisting in isolation and signal transfer in automated control systems.
5. Telecom Equipment: Ensuring safe signal transmission in telecommunications infrastructure by isolating different network segments.
These applications leverage the TLP421's ability to provide electrical isolation while transmitting data signals.
Package
The TLP421 is an optocoupler that typically comes in a 4-pin DIP (Dual Inline Package) format.
