The TLP4N35 is a photocoupler manufactured by Toshiba Semiconductor and Storage. It consists of a gallium arsenide infrared emitting diode optically coupled to a silicon phototransistor. This configuration ensures high isolation voltage and efficient signal transfer, making it suitable for applications requiring electrical isolation between circuits.

Applications

• Programmable Logic Controllers (PLCs): Isolates input and output signals to protect sensitive control circuitry.
• Inverter Circuits: Provides isolation in power inverter control circuits, ensuring safety.
• Switching Mode Power Supplies (SMPS): Isolates the primary and secondary sides for safety and noise reduction.
• General Purpose Inverters: Control signal isolation in motor control and other inverter applications.
• Office Automation Equipment: Isolates peripherals and control systems, preventing ground loops and enhancing safety.

Features

• High Isolation Voltage: Offers a high degree of electrical isolation between input and output.
• High Current Transfer Ratio (CTR): Ensures efficient signal transmission with minimal loss.
• Compact Package: Designed to save space on densely populated circuit boards.
• Low Input Current: Requires minimal input current for operation, reducing power consumption.
• Pb-Free (RoHS Compliant): Complies with environmental standards for lead-free manufacturing.

Benefits

• Enhanced Safety: Protects sensitive circuits from high voltage transients, surges, and electrical noise.
• Improved Signal Integrity: Minimizes interference and ensures reliable signal transmission.
• Reliable Performance: Provides stable and consistent operation in diverse environmental conditions.
• Space Saving: Compact package allows for use in space-constrained applications.
• Reduced Power Consumption: Low input current contributes to overall energy efficiency.

Additional Details

The TLP4N35 features a minimum isolation voltage of 5000 Vrms. The current transfer ratio (CTR) is specified at a certain percentage, ensuring efficient signal transmission. The operating temperature range is typically from -55°C to 100°C. The package is a 4-pin DIP (Dual In-line Package). The forward voltage is around 1.2V, and the collector-emitter voltage can range up to 70V.

This photocoupler is commonly used in industrial control systems, power supplies, and other applications where electrical isolation is critical for ensuring safety and reliable performance. Its robust design and high isolation capability make it a popular choice for isolating sensitive circuits.