ILQ621GB-X017T

Transistor, Photovoltaic Output Optoisolators Overview

The ILQ621GB-X017T is a quad-channel phototransistor optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates GaAs infrared LED emitters with high-gain NPN silicon phototransistors in a single package to provide electrical isolation between input and output circuits. The device features a maximum isolation voltage of 5300 Vrms, ensuring robust safety compliance for high-voltage applications. It supports a DC input type with a typical forward voltage of 1.15 V at a maximum DC forward current of 60 mA. The output channels can withstand a maximum voltage of 70 V and deliver up to 50 mA per channel. The Current Transfer Ratio ranges from 100% to 600% at 5 mA input. Operating temperatures span from -55°C to +100°C, housed in a 16-SMD surface-mount package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Quad-channel configuration utilizing GaAs IRED emitters and high-gain NPN silicon phototransistors for efficient signal transmission.
• Provides high-level electrical isolation with a rated insulation voltage of 5300 Vrms for enhanced safety.
• Designed for digital logic transmission, impedance transformation, and circuit-to-circuit insulation.

Transistor, Photovoltaic Output Optoisolators Applications

• Digital logic signal transmission and level shifting
• Power supply control and switching circuits
• Electrical insulation isolation between systems

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix X017T against official Vishay documentation to confirm packaging details such as reel or cut-tape specifications. Ensure the 16-SMD package variant matches the target PCB footprint requirements. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and lead times, as production cycles may vary. Confirm RoHS compliance status through the latest datasheet before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multi-channel isolation is required within a compact surface-mount form factor. The high current transfer ratio makes it suitable for low-input current applications where significant output drive is needed. Consider the 70 V output voltage rating and 50 mA channel current capability to ensure compatibility with downstream logic or load interfaces. Verify thermal management requirements given the wide operating temperature range and power dissipation characteristics.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ILQ621GB series of multi-channel phototransistor optocouplers. It shares architectural similarities with other Vishay quad-channel isolators but is distinguished by its specific SMD packaging and GaAs emitter technology. The series is designed to replace legacy DIP packages in space-constrained designs while maintaining high isolation performance and signal integrity across multiple independent channels.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements include other Vishay quad-channel optocouplers such as the ILD621GB series variants, provided they match the 16-SMD package and electrical specifications. Check for equivalent isolation voltages and current transfer ratios when substituting with components from other manufacturers to ensure functional parity in high-speed digital isolation applications.