IS3021G

Overview

The IS3021G is a single-channel optoisolator featuring a triac output, manufactured by Isocom Components. It utilizes a through-hole mounting configuration within a 6-pin DIP package. The device provides an isolation voltage of 5.3 kVrms and supports a maximum repetitive peak off-state voltage of 400 V. Designed for non-zero crossing operation, it integrates an infrared LED input with a triac output to facilitate AC load switching applications while maintaining electrical isolation between control and power circuits.

Feature Summary

• Integrates an infrared light emitting diode with a silicon triac output for optical signal transmission
• Provides high-voltage electrical isolation between input and output circuits via dielectric barrier
• Features non-zero crossing detection capability for immediate AC load activation upon input signal

Applications

• AC motor speed control systems
• Solid state relay driver circuits
• Industrial process control isolation interfaces

Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure that the selected variant meets the required isolation voltage standards for the target application environment. Cross-reference the datasheet parameters with system design constraints before finalizing procurement orders.

Selection Notes

Select this component when non-zero crossing triac output is required for rapid AC switching response. Consider the 400 V blocking voltage rating relative to the peak line voltage in the application circuit. Evaluate the 6-pin DIP package dimensions for PCB layout constraints and verify thermal dissipation requirements for continuous operation under load conditions.

Part Context

This part belongs to the IS3021 series of optocouplers produced by Isocom Components. The series specializes in infrared optoelectronic devices designed for reliable signal isolation in industrial and consumer electronics. The IS3021G variant specifically addresses applications requiring robust triac output performance with standard through-hole packaging solutions.

Replacement Considerations

Compatible substitutes include the MOC3021X and MOC3021SM from Isocom Components, which share similar triac output characteristics and 6-pin PDIP/SMD packaging options. Verify pin alignment and electrical ratings before substitution.