The TIL197BSMT&R is a high-isolation voltage surface-mount optocoupler manufactured by Isocom Components 2004 LTD. Similar to the TIL197ASMT&R, it consists of a gallium arsenide (GaAs) infrared emitting diode (IRED) optically coupled to a silicon phototransistor detector, but with a different specified current transfer ratio (CTR) range. This design provides electrical isolation between the input and output circuits, making it suitable for applications requiring high isolation voltage, a specific CTR range for predictable signal behavior, and reliable signal transfer in a compact surface-mount package optimized for automated assembly.

Applications

• Surface Mount Industrial Control Systems: Isolating control signals in PLCs, motor drives, and other SMT-based industrial automation systems where a specific CTR range ensures consistent performance.
• SMT Power Supplies: Providing isolation between the primary and secondary sides of surface mount power supplies, particularly in feedback control loops where a defined CTR is critical for stability and regulation.
• Data Communication: Ensuring electrical isolation in surface-mount data transmission lines to prevent ground loops and noise, especially in systems relying on precise signal levels and timings.
• Medical Devices: Isolating sensitive patient monitoring and diagnostic equipment for safety in surface mount medical devices, ensuring consistent and predictable signal characteristics.
• Test and Measurement Equipment: Protecting measurement instruments from high voltage and transients in SMT-based instruments, benefiting from a predictable and consistent signal transfer.

Features

• High Isolation Voltage: Offers a high isolation voltage capability, typically up to 5 kVAC or higher, ensuring robust electrical isolation.
• Surface Mount Package: Designed for automated assembly processes, reducing manufacturing costs and improving reliability.
• Defined Current Transfer Ratio (CTR) Range: Provides a specific CTR range, ensuring consistent signal transfer characteristics and predictable performance.
• Wide Operating Temperature Range: Suitable for use in harsh industrial environments.
• Safety Certifications: Meets various international safety standards, including UL, VDE, and CSA.
• RoHS Compliance: Compliant with the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Benefits

• Enhanced Safety: Provides a high level of electrical isolation to protect personnel and equipment.
• Improved Signal Integrity: Prevents ground loops and noise from interfering with signal transmission.
• Increased System Reliability: Reduces the risk of damage from voltage transients and surges.
• Simplified Assembly: Surface mount package facilitates automated assembly and reduces manufacturing time.
• Reduced Component Count: Combines isolation and signal transfer functions into a single device.
• Predictable Performance: Defined CTR range ensures consistent signal behavior across different devices and operating conditions, crucial for applications requiring precise signal control.

Additional Details

The TIL197BSMT&R is specifically designed for applications demanding a tightly controlled CTR range. The "B" suffix indicates a different CTR range compared to the TIL197A and the standard TIL197 series, allowing designers to select the optimal device for their specific circuit requirements. The &R suffix indicates that the device is supplied on tape and reel for automated pick-and-place assembly.

Key electrical characteristics include:

• Forward current (IF): Typically 10-20 mA
• Collector-emitter voltage (VCEO): 30-80 V
• Isolation voltage (VISO): 5000 VAC or higher
• Specific Current Transfer Ratio (CTR) Range, distinct from TIL197A and the standard TIL197 versions

The optocoupler's design ensures galvanic isolation between the input and output circuits, providing robust protection against high voltages and ground loops. Its surface mount package enables efficient assembly and reduces board space. The defined CTR range guarantees consistent and predictable signal transfer, which is vital for applications such as feedback control systems and precision instrumentation. The TIL197BSMT&R is a reliable and precise solution for isolating signals in demanding surface-mount applications where a specific and controlled CTR is essential for optimal performance.