TCDT1103G

Overview

The TCDT1103G is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and utilizes a 6-pin DIP package for through-hole mounting. The device provides an isolation voltage of 5000 Vrms, ensuring robust electrical separation between input and output circuits. Key electrical parameters include a minimum current transfer ratio of 100% and a maximum of 200%. The forward voltage is specified at 1.6 V with a maximum forward current of 60 mA. The collector-emitter saturation voltage is limited to 300 mV, while the maximum collector current reaches 50 mA. Operating temperatures range from -40°C to +100°C.

Feature Summary

• Provides high-voltage electrical isolation via a 5000 Vrms dielectric barrier between input and output sections.
• Utilizes an NPN phototransistor output configuration for reliable digital signal switching applications.
• Ensures consistent signal transmission with a defined current transfer ratio range of 100% to 200%.

Applications

• Industrial control systems requiring galvanic isolation
• Signal interfacing between microcontrollers and high-voltage loads
• Power supply feedback loops for safety compliance

Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance status as per manufacturer documentation. Confirm the 6-DIP package dimensions match the target PCB footprint requirements. Ensure the operating temperature range aligns with the environmental conditions of the final assembly. Cross-reference the current transfer ratio specifications against circuit design margins to guarantee performance under varying thermal conditions.

Selection Notes

Select this component when a standard 6-pin DIP form factor is required for through-hole assembly processes. Consider the 5000 Vrms isolation rating for applications demanding significant potential difference between circuits. Evaluate the 100-200% CTR range to ensure adequate drive capability for downstream logic levels without excessive input current.

Part Context

This part belongs to the TCET/TCLT/TCDT series of transistor output optocouplers from Vishay. These devices are designed for general-purpose isolation tasks in industrial and consumer electronics. The TCDT1103G specifically offers a 6-pin variant compared to other series members that may use different package styles or channel counts.

Replacement Considerations

Public confirmed substitute part numbers: TCDT1102