TCDT1102G

Overview

The TCDT1102G is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output housed in a PDIP-6 through-hole package. Key electrical parameters include a maximum isolation voltage of 5000 Vrms and a current transfer ratio ranging from 63% to 125%. The device supports a maximum collector current of 50 mA and a forward current of 60 mA, with a typical forward voltage of 1.6 V. Operating temperatures range from -55°C to +100°C, with power dissipation rated at 200 mW.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits via optical coupling.
• Utilizes an NPN phototransistor for robust signal transmission and switching applications.
• Designed for through-hole mounting to ensure mechanical stability in industrial environments.

Applications

• Industrial control systems requiring galvanic isolation
• Signal isolation in microprocessor-based circuits
• Power supply feedback loops

Procurement Notes

Verify the specific datasheet version from Vishay Semiconductor Opto Division to confirm compliance with current safety standards such as UL1577 and IEC 60747-5-5. Ensure that the procurement source provides original components with traceable manufacturing dates to guarantee reliability in critical isolation applications.

Selection Notes

Select this component when a single-channel isolation barrier is required with moderate speed characteristics. Consider the 63-125% current transfer ratio range for circuit design margins. The PDIP-6 package is suitable for prototyping and low-volume production where through-hole technology is preferred over surface mount alternatives.

Part Context

This part belongs to the Vishay TCET1100/TCDT1100 series of transistor output optocouplers. These devices are designed for general-purpose isolation tasks, offering a balance between performance and cost-effectiveness. The series is widely used in consumer electronics and industrial equipment where reliable signal transfer across potential differences is essential.

Replacement Considerations

Direct pin-to-pin replacements within the same Vishay family may include variants with different current transfer ratios or packaging options. Verify compatibility with existing PCB footprints and thermal requirements before substitution.