3C92CTX

Overview

The 3C92CTX is a single-channel transistor output optoisolator manufactured by TT Electronics/Optek Technology. It features an NPN phototransistor output and utilizes a TO-72-4 through-hole package. The device provides an insulation voltage of 1000 Vrms, ensuring reliable signal isolation. Key electrical parameters include a collector-emitter saturation voltage of 400 mV maximum, a forward current of 10 mA, and a forward voltage of 1.5 V. The unit supports a maximum collector current of 30 mA and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using infrared LED and NPN phototransistor technology.
• Designed for through-hole mounting in a standard TO-72-4 glass package for robust mechanical stability.
• Capable of handling high insulation voltages to protect sensitive low-voltage control circuitry from high-voltage noise.

Applications

• Industrial control systems requiring isolated signal transmission
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix (CTX) against the manufacturer's latest datasheet to confirm packaging details and availability status. Ensure that the TO-72-4 pinout matches the target PCB footprint design. Cross-reference the RoHS compliance documentation with current regulatory requirements for the intended market. Confirm lead times as production cycles may vary based on manufacturing schedules.

Selection Notes

Select this component when a hermetically sealed TO-72 package is required for high-reliability applications. The NPN output configuration suits logic-level interfacing where open-collector behavior is acceptable. Consider the 1000 Vrms isolation rating for environments with significant potential differences between ground planes. Evaluate the thermal performance within the specified operating temperature range during system integration.

Part Context

This part belongs to the Optek Technology line of optoelectronic isolators produced under the TT Electronics brand. The family focuses on providing cost-effective isolation solutions for industrial and consumer electronics. The TO-72 form factor represents a legacy but reliable package style often used in equipment requiring long-term durability and proven performance characteristics.

Replacement Considerations

Direct substitutes must match the TO-72-4 package and NPN output type. Verify equivalent isolation voltage ratings and current transfer ratios before substitution. Generic replacements may differ in physical dimensions or switching speeds.