TCET1104G

Overview

The TCET1104G is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and is housed in a DIP-4 package for through-hole mounting. The device provides an insulation voltage of 5000 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 50 mA, and a forward current of 60 mA. The forward voltage is 1.6 V, with a maximum collector-emitter saturation voltage of 300 mV. The current transfer ratio ranges from 160% to 320%. Switching characteristics include a rise time of 3 µs and a fall time of 4.7 µs.

Feature Summary

• Provides high-voltage isolation with 5000 Vrms insulation capability between input and output circuits.
• Features a fast switching response with a typical rise time of 3 µs and fall time of 4.7 µs.
• Delivers a wide current transfer ratio range of 160% to 320% for reliable signal transmission.
• Utilizes a standard DIP-4 through-hole package for easy integration into printed circuit boards.

Applications

• Signal isolation in industrial control systems
• Switching applications requiring galvanic isolation
• Interface circuits between microprocessors and power devices

Procurement Notes

Verify the specific current transfer ratio grade required for the application, as the TCET1104G covers a 160-320% range. Confirm that the DIP-4 through-hole package aligns with the target PCB layout constraints. Ensure the 5000 Vrms isolation rating meets the safety standards applicable to the end equipment. Check RoHS compliance status if environmental regulations are a strict requirement for the project.

Selection Notes

Select the TCET1104G when a single channel with moderate speed and high isolation voltage is needed. The 70 V collector-emitter voltage suits low-to-medium voltage switching tasks. Consider alternative models within the TCET1100 series if different current transfer ratios or faster switching speeds are required. The component is suitable for general-purpose isolation where cost-effective through-hole mounting is preferred over surface-mount solutions.

Part Context

The TCET1104G belongs to the Vishay TCET1100 series of transistor output optocouplers. This family shares common characteristics such as the DIP-4 package, 5000 Vrms isolation, and similar switching times. Variations within the series, such as the TCET1103G or TCET1108G, primarily differ in their specified current transfer ratio ranges. This grouping allows designers to select components based on specific gain requirements while maintaining consistent physical and electrical interface properties.

Replacement Considerations

Direct substitutes within the same series include the TCET1103G (CTR 100-200%) and TCET1108G (CTR 130-260%). These parts share identical pinouts, packages, and basic electrical ratings. Selection depends on whether the specific CTR range of the replacement matches the design's gain requirements. Other Vishay models with matching DIP-4 form factors may serve as alternatives if CTR specifications align.