ILQ1

Transistor, Photovoltaic Output Optoisolators Overview

The ILQ1 is a quad-channel optocoupler from Vishay Semiconductor Opto Division, housed in a 16-pin PDIP package. It utilizes GaAs infrared LEDs and silicon NPN phototransistors for isolation. Key electrical parameters include a maximum current transfer ratio of 300% at 10mA input, an isolation voltage of 5300Vrms, and an operating temperature range of -40°C to 100°C. The device features a minimum current transfer ratio of 20% and supports output currents up to 50mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Four independent channels for multi-signal isolation
• High isolation voltage capability for safety compliance
• Designed for driving medium-speed logic circuits

Transistor, Photovoltaic Output Optoisolators Applications

• Medium-speed logic circuit isolation
• Multi-channel signal transmission systems
• Industrial control interface modules

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component status as the ILQ1 is listed as obsolete by major distributors. Confirm availability through authorized secondary market suppliers or check for direct replacements within the Vishay ILD/ILQ family. Ensure datasheet revisions match application requirements before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when four isolated channels are required in a single package. Consider the 5300Vrms isolation rating for high-voltage separation needs. Evaluate the 300% CTR limit against load requirements. Note that the device is discontinued; plan for long-term supply chain risks.

Transistor, Photovoltaic Output Optoisolators Part Context

The ILQ1 belongs to Vishay's ILQ series of quad-channel optocouplers. It shares architectural similarities with the ILD1 and ILD2 series but provides four channels instead of two. These devices are designed for applications requiring multiple isolated signals within compact DIP packaging.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The ILQ1 is officially marked as obsolete. Potential substitutes include other Vishay quad-channel optocouplers such as the ILQ2 or ILQ5, provided pin compatibility and electrical specifications meet the design requirements.