Description Specifications 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 compliantApplications 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 VrmsCollector-Emitter Voltage: 30VForward Voltage (LED): 1.2V - 1.5VForward Current (LED): 60mAPower Dissipation: 150mWOperating Temperature: -40°C to 85°CStorage Temperature: -55°C to 150°CSoldering Temperature: 260°C for 10 secondsResponse Time (tr): 3 µsRise Time: 2 μsFall Time: 2 μsInput-Output Coupling Capacitance:
