4N25 3.75KV 30V 20%
SKU:4N25
Image is for illustrative purposes only
The 4N25 is a general-purpose optocoupler designed for electrical isolation between circuits, enabling secure signal transmission without direct electrical connection. This device features an infrared LED and an NPN phototransistor, all within a convenient 6-pin DIP package.
Key Features
- Optically coupled isolator
- Infrared emitting diode (IRED) and NPN phototransistor
- High isolation voltage: 5000 Vrms (minimum)
- Low input current requirement
- High current transfer ratio (CTR)
- Compact 6-pin DIP package
- RoHS compliant
Applications and Use Cases
- Signal isolation in control systems: Protects sensitive components from high voltage spikes.
- Microcontroller interfacing: Enables microcontrollers to manage devices such as DC motors and relays.
- Switching power supplies: Provides feedback signals while isolating the control circuit.
- Industrial automation: Improves system performance, safety, and reliability in industrial settings.
- Motor controls: Isolates the control circuit from the motor circuit, preventing electrical noise.
- Consumer electronics: Used in various consumer electronic devices for safety and isolation.
- AC mains detection: Detects AC power mains.
- Reed relay driving: Drives reed relays.
- Telephone ring detection: Detects telephone rings.
- Logic ground isolation: Isolates logic grounds between circuits operating at different voltages.
- Logic coupling with high-frequency noise rejection: Couples logic signals while rejecting high-frequency noise.
The 4N25 offers an excellent balance of protection, efficiency, and reliability, making it a versatile component for modern circuit design. It facilitates secure interaction between low-voltage devices and higher voltage components, enhancing both safety and power efficiency.
Key Features
- Optically coupled isolator
- Infrared emitting diode (IRED) and NPN phototransistor
- High isolation voltage: 5000 Vrms (minimum)
- Low input current requirement
- High current transfer ratio (CTR)
- Compact 6-pin DIP package
- RoHS compliant
Applications and Use Cases
- Signal isolation in control systems: Protects sensitive components from high voltage spikes.
- Microcontroller interfacing: Enables microcontrollers to manage devices such as DC motors and relays.
- Switching power supplies: Provides feedback signals while isolating the control circuit.
- Industrial automation: Improves system performance, safety, and reliability in industrial settings.
- Motor controls: Isolates the control circuit from the motor circuit, preventing electrical noise.
- Consumer electronics: Used in various consumer electronic devices for safety and isolation.
- AC mains detection: Detects AC power mains.
- Reed relay driving: Drives reed relays.
- Telephone ring detection: Detects telephone rings.
- Logic ground isolation: Isolates logic grounds between circuits operating at different voltages.
- Logic coupling with high-frequency noise rejection: Couples logic signals while rejecting high-frequency noise.
The 4N25 offers an excellent balance of protection, efficiency, and reliability, making it a versatile component for modern circuit design. It facilitates secure interaction between low-voltage devices and higher voltage components, enhancing both safety and power efficiency.
Isolation Test Voltage: 5000 Vrms
Collector-Emitter Voltage: 30V
Forward Voltage (LED): 1.2V - 1.5V
Forward Current (LED): 60mA
Power Dissipation: 150mW
Operating Temperature: -40°C to +85°C
Storage Temperature: -55°C to +150°C
Soldering Temperature: 260°C for 10 seconds
Response Time (tr): 3 µs
Rise Time: 2 μs
Fall Time: 2 μs
Input-Output Coupling Capacitance: < 0.5 pF
Collector-Emitter Voltage: 30V
Forward Voltage (LED): 1.2V - 1.5V
Forward Current (LED): 60mA
Power Dissipation: 150mW
Operating Temperature: -40°C to +85°C
Storage Temperature: -55°C to +150°C
Soldering Temperature: 260°C for 10 seconds
Response Time (tr): 3 µs
Rise Time: 2 μs
Fall Time: 2 μs
Input-Output Coupling Capacitance: < 0.5 pF
