ILD621GB

Transistor, Photovoltaic Output Optoisolators Overview

The ILD621GB is a dual-channel phototransistor optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates GaAs infrared LED emitters with high-gain NPN silicon phototransistors for signal isolation. Key electrical parameters include a minimum current transfer ratio of 100% and a maximum of 600%. The device supports a maximum collector-emitter voltage of 70 V and a continuous collector current of 100 mA. Isolation voltage is rated at 5300 Vrms. Typical switching characteristics feature a rise time of 2.8 µs and a fall time of 11 µs. The component operates within a temperature range of -55°C to +100°C and is housed in an 8-pin DIP package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Utilizes GaAs infrared LED emitters paired with high-gain NPN silicon phototransistors for efficient optical coupling.
• Provides robust electrical isolation with a rated insulation voltage of 5300 Vrms between input and output circuits.
• Features fast switching performance with typical rise and fall times suitable for digital signal transmission applications.

Transistor, Photovoltaic Output Optoisolators Applications

• Digital signal isolation in industrial control systems
• Interface circuits for microprocessors and logic families
• Power supply feedback loops requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (GB) against the manufacturer's datasheet to confirm lead-free compliance and RoHS status, as suffixes often denote environmental or packaging variations. Ensure the ordering quantity matches the tube packaging configuration specified in the official documentation. Cross-reference the active part status with current availability through authorized distributors to prevent procurement delays due to end-of-life transitions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation is required within a compact footprint. The high current transfer ratio ensures reliable switching with low input drive currents. Consider the 70 V collector-emitter voltage rating for compatibility with standard logic levels. Verify that the 8-pin DIP package fits the target PCB layout constraints. Compare switching speeds against application requirements to ensure the 2.8 µs rise time meets timing specifications.

Transistor, Photovoltaic Output Optoisolators Part Context

The ILD621GB belongs to the ILQ/ILD series of multi-channel phototransistor optocouplers from Vishay. This family utilizes gallium arsenide infrared LEDs for high efficiency and reliability. The GB suffix typically indicates a lead-free variant compliant with specific environmental directives. These devices are designed for general-purpose isolation tasks where moderate speed and high gain are necessary.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other Vishay dual-channel optocouplers from the same series, such as the ILD621 or ILQ621, provided pinout and electrical ratings match. Verify channel count and package type before substitution. Consult the manufacturer's cross-reference guide for approved alternatives with identical functional specifications.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the typical rise time for the ILD621GB?

The typical rise time is 2.8 microseconds.

Does the ILD621GB support AC input signals?

No, the ILD621GB is designed for DC input signals only.