ILD74

Transistor, Photovoltaic Output Optoisolators Overview

The ILD74 is a dual-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an aluminum gallium arsenide infrared LED coupled to silicon NPN phototransistors, providing electrical isolation with a maximum insulation voltage of 5300 Vrms. The device operates within a temperature range of -55°C to +100°C and supports a maximum forward current of 60 mA. Key electrical parameters include a collector-emitter saturation voltage of 500 mV, a collector-emitter voltage of 20 V, and a power dissipation rating of 400 mW. The component is housed in an 8-pin PDIP Gull Wing package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Dual-channel configuration utilizing GaAlAs infrared LEDs and silicon NPN phototransistors for signal transmission
• High isolation capability rated at 5300 Vrms between input and output circuits
• Wide operating temperature range extending from -55°C to +100°C for robust environmental performance

Transistor, Photovoltaic Output Optoisolators Applications

• General purpose signal isolation in industrial control systems
• Power supply feedback loops requiring galvanic separation
• Microcontroller interface circuits for noise immunity

Transistor, Photovoltaic Output Optoisolators Procurement Notes

The ILD74-X017T variant is listed as obsolete or end-of-life by the manufacturer. Availability is restricted, and distributors may not stock this item in the user's region. Verification of current lifecycle status and alternative sourcing options is required before procurement planning. Check official Vishay documentation for definitive obsolescence confirmation.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select the ILD74 when dual-channel isolation is necessary within a single package footprint. Ensure the application requires NPN phototransistor outputs and can accommodate the 5300 Vrms isolation rating. Verify that the 60 mA forward current limit and 20 V collector-emitter voltage meet circuit requirements. Consider the PDIP-8 package constraints for PCB layout.

Transistor, Photovoltaic Output Optoisolators Part Context

The ILD74 belongs to the IL74 family of transistor output optocouplers, which includes single-channel (IL74) and quad-channel (ILQ74) variants. This specific model provides two isolated channels, offering a compact solution compared to using separate single-channel devices. The family shares common design principles regarding LED material and phototransistor technology.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. As the component is marked as obsolete, direct replacement verification must be conducted through official Vishay engineering support or authorized distributor cross-reference tools.