TCET1202

Overview

The TCET1202 is a single-channel optocoupler manufactured by Vishay Semiconductor Opto Division. It features an infrared emitting diode paired with a phototransistor output, designed for signal isolation in electronic circuits. The device provides high voltage isolation of 5000Vrms between input and output channels. Key electrical parameters include a typical forward voltage (Vf) of unspecified value in source text but noted as part of the component profile, a maximum output voltage of 70V, and a channel current rating of 50mA. The minimum Current Transfer Ratio (CTR) is specified as 63% at a forward current of 10mA. The component is housed in a tube package and is currently listed as active.

Feature Summary

• High voltage isolation capability suitable for high-voltage circuit applications
• Integrated infrared emitter and phototransistor on common optical axis
• Single-channel configuration for standard signal isolation tasks

Applications

• High-voltage isolation in electronic circuits
• Signal transmission across isolated grounds
• General-purpose optoisolation in industrial equipment

Procurement Notes

Verify the specific ordering suffix and packaging format directly with the manufacturer or authorized distributors to ensure compliance with project requirements. Confirm that the tube packaging aligns with available assembly equipment capabilities. Cross-reference the datasheet revision date to ensure all electrical characteristics, particularly the CTR and isolation ratings, match the design specifications. Ensure storage conditions adhere to moisture sensitivity level guidelines if applicable.

Selection Notes

Select this component when a single-channel isolation solution with 5000Vrms dielectric strength is required. The 50mA output current capacity supports moderate load driving without external amplification in many scenarios. Consider the 63% CTR minimum at 10mA for logic-level interface compatibility. Evaluate the physical dimensions and tube packaging against PCB layout constraints and automated placement feasibility compared to tape-and-reel alternatives.

Part Context

The TCET1202 belongs to Vishay's family of transmissive optical sensors and isolators. It shares architectural similarities with related models like the TCST1202, which utilizes a through-beam slot configuration rather than integrated encapsulation. While the TCST1202 is designed for mechanical slot sensing, the TCET1202 is optimized for electrical isolation within a compact surface-mount or through-hole compatible footprint, serving distinct functional roles within the same product line.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Designers should consult official Vishay cross-reference guides or contact technical support for validated equivalent components that meet identical isolation voltage and CTR specifications.