4N35SM

Introducing the 4N35SM, a high-performance optocoupler designed specifically for today’s demanding applications in the electronics industry. This Surface-Mount Device (SMD) offers exceptional functionality and reliability, making it a superior choice for any circuit requiring isolation and efficient signal transmission.

Overview of the 4N35SM Optocoupler

The 4N35SM optocoupler operates as an electronic switch, enabling signals to be transmitted between different voltage levels while maintaining critical electrical isolation. This isolation protects sensitive components from voltage spikes, noise, and ground loops. The 4N35SM is particularly effective in applications where safety and noise immunity are crucial.

Key Features of the 4N35SM

• High Isolation Voltage: With an impressive isolation voltage of 7.5 kV, the 4N35SM guarantees secure and interference-free signals.
• Compact Design: This optocoupler features a gull-wing package (6 pins), allowing for easy surface mounting on various printed circuit boards (PCBs).
• Transistor Output: Equipped with a transistor, the output provides robust signal transfer and faster switching speeds.
• Wide Operating Temperature: The 4N35SM is engineered to perform reliably across a broad temperature range, making it suitable for extreme conditions.

Applications of the 4N35SM Optocoupler

The versatility of the 4N35SM makes it suitable for numerous applications across various industries. Here are some common uses:

• Data Communication: Ideal for transmitting signals safely and effectively within telecommunication systems.
• Industrial Automation: Frequently used in programmable logic controllers (PLCs) to isolate input and output signals.
• Consumer Electronics: Commonly found in devices requiring interface circuits for power management systems.
• Medical Equipment: Essential for patient safety, ensuring isolated control in electronic medical devices.

Why Choose the 4N35SM?

When selecting an optocoupler like the 4N35SM, certain critical factors make it stand out:

• Superior Performance: With a high isolation voltage of 7.5 kV and excellent signal integrity, this optocoupler guarantees reliable operation.
• Ease of Use: The gull-wing design enhances soldering capabilities and aligns perfectly with most PCB layouts, making installation straightforward and efficient.
• Cost-Effectiveness: When considering performance versus price, the 4N35SM offers a budget-friendly option for both large and small electronic designs.

Technical Specifications

Understanding the technical specifications is vital for engineers and designers making informed decisions. Here are the detailed specifications for the 4N35SM:

• Supply Voltage (Vcc): 0 – 25V
• Input Current (IF): 10 – 20 mA
• Output Voltage (VO): Up to 50V
• Isolation Voltage: 7.5 kV
• Temperature Range: -40°C to +85°C

How the 4N35SM Works

The 4N35SM employs an infrared light-emitting diode (LED) combined with a phototransistor to achieve signal isolation. When voltage is applied to the input side, the LED emits infrared light, detected by the phototransistor on the output side. The phototransistor then permits current flow, effectively creating a controlled switch, providing the necessary isolation to ensure high voltage or noisy signals don’t directly impact sensitive components.

Benefits of Using the 4N35SM

By integrating the 4N35SM into your design, you gain:

• Increased Safety: The strong isolation protects circuits from damage caused by voltage overloads and surges.
• Improved Reliability: Reduces the risk of component failure, extending the lifespan of your devices.
• Enhanced Performance: Provides rapid signal response times and precision in data transfer.

Conclusion

In summary, the 4N35SM optocoupler is a powerful and reliable component suited for various applications, from industrial automation to medical devices. Its high isolation voltage, compact design, and exceptional performance make it the perfect choice for engineers looking to enhance their electronic designs. Choose the 4N35SM for your next project and experience the difference in quality and reliability.

For more electronic solutions, explore our selection of Optocouplers with Analog Output.