TCLT1112

Overview

The TCLT1112 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor with a base terminal for enhanced switching performance and isolation capabilities. The device provides a high isolation voltage of 5000 Vrms, ensuring robust signal transmission across isolated circuits. Packaged in a compact 6-SOP (5-pin) surface-mount format, it supports a maximum collector current of 50 mA and operates within a temperature range of -55°C to +100°C. The component is designed for applications requiring reliable electrical isolation and fast response times.

Feature Summary

• Integrates an NPN phototransistor with a dedicated base terminal to improve switching speed and linearity compared to standard configurations.
• Provides high-voltage isolation capability rated at 5000 Vrms between input and output sections for safe signal transfer.
• Utilizes a compact 6-SOP surface-mount package with five pins, facilitating automated assembly and space-constrained designs.

Applications

• General-purpose digital signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic families requiring galvanic separation
• Power supply feedback loops and monitoring circuits

Procurement Notes

Verify the specific suffix or tape-and-reel configuration required for your manufacturing process, as packaging options may vary. Confirm that the 6-SOP footprint matches your PCB design guidelines. Ensure compliance with RoHS directives if applicable to your region. Cross-reference the datasheet revision date to confirm parameter stability before finalizing the bill of materials.

Selection Notes

Select this component when a phototransistor output with a base pin is necessary for faster turn-off times or linear operation. Compare the 5000 Vrms isolation rating against system safety requirements. Consider the 6-SOP package dimensions for board space constraints. Evaluate the operating temperature range to ensure suitability for the intended environmental conditions.

Part Context

The TCLT1112 belongs to Vishay's family of transistor output optocouplers, which are designed for general-purpose isolation tasks. It shares similar packaging and basic functionality with related models like the TCLT1113 and TCLT1108, but differs in specific electrical characteristics such as current transfer ratio ranges and saturation voltages. This series is commonly used in cost-sensitive applications requiring reliable galvanic isolation.

Replacement Considerations

Potential substitutes include the TCLT1113 and TCLT1108 from the same manufacturer, provided their electrical parameters meet the circuit requirements. Verify pin compatibility and isolation voltage ratings before substitution. Consult official Vishay documentation for detailed cross-reference information and ensure mechanical fit within the existing footprint.