TCET1103G

Overview

The TCET1103G is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output housed in a PDIP-4 through-hole package. The device provides an isolation voltage of 5000 Vrms and supports a maximum collector-emitter voltage of 70 V with a peak forward current of 60 mA. The current transfer ratio ranges from 100% to 200%. Key electrical parameters include a forward voltage of 1.6 V, a maximum collector current of 50 mA, and a collector-emitter saturation voltage of 300 mV. Switching characteristics specify a rise time of 3 µs and a fall time of 4.7 µs. The component operates within a temperature range of -40°C to +100°C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using a single-channel phototransistor configuration.
• Delivers fast switching performance with defined rise and fall times suitable for digital signal transmission applications.
• Ensures reliable operation across extended industrial temperature ranges while maintaining specified current transfer ratios.

Applications

• Industrial control systems requiring galvanic isolation
• Solid-state relay driver circuits
• Microcontroller interface isolation

Procurement Notes

Verify the specific suffix G indicates the tube packaging format when sourcing. Confirm that the required current transfer ratio bin (100-200%) aligns with circuit design constraints. Ensure the PDIP-4 through-hole footprint matches the target PCB layout. Cross-reference the latest Vishay datasheet for any updates on mechanical dimensions or thermal dissipation limits before finalizing procurement specifications.

Selection Notes

Select this component when a through-hole DIP package is required for robust mechanical mounting in industrial environments. Choose the TCET1103G over surface mount alternatives if automated insertion equipment is unavailable. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate the 100-200% CTR range against load requirements to ensure adequate output drive capability without excessive input current.

Part Context

This part belongs to the TCET1100 series of transistor output optocouplers from Vishay. The series offers various current transfer ratio bins to accommodate different sensitivity requirements. The TCET1103G specifically targets applications needing standard gain levels. It complements other variants like the TCET1104G or TCET1108G which offer higher CTR ranges. The series is designed for general-purpose isolation tasks in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include TCET1100G, TCET1101G, and TCET1102G from the same Vishay family, provided their respective CTR bins match system requirements. Verify pinout compatibility and package dimensions remain identical for drop-in replacement. Check if alternative manufacturers offer equivalent PDIP-4 optocouplers with matching 5000 Vrms isolation ratings.