ISP521-4XG

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-4XG is a high-density mounting phototransistor optically coupled isolator manufactured by Isocom Components. It consists of an infrared light emitting diode and an NPN silicon photo transistor housed in a space-efficient dual in line plastic package. The device provides electrical isolation between input and output circuits, featuring a high isolation voltage of 5.3kV RMS and a peak value of 7.5kVPK. It supports a minimum collector-emitter breakdown voltage (BVCEO) of 55V and offers a high current transfer ratio with a minimum specification of 50%. All electrical parameters are 100% tested to ensure reliability.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared LED and NPN silicon phototransistor for signal transmission across isolated potentials
• Provides high isolation voltage capability of 5.3kV RMS and 7.5kVPK for robust circuit protection
• Features a high current transfer ratio with a minimum guarantee of 50% for efficient switching
• Constructed in a space-efficient dual in line plastic package suitable for high-density mounting

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals
• Industrial systems controllers
• Measuring instruments
• Signal transmission between systems of different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix configuration against official Isocom documentation to confirm lead spread dimensions and packaging type. Ensure the selected variant matches the required isolation voltage and current transfer ratio specifications for the target application. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-density mounting is required alongside robust electrical isolation. The 50% minimum current transfer ratio makes it suitable for applications demanding reliable signal transmission. Verify that the 55V BVCEO rating meets the output circuit requirements. Consider the DIP package constraints for PCB layout and thermal management during the design phase.

Transistor, Photovoltaic Output Optoisolators Part Context

The ISP521-4XG belongs to the TLP521 series family of optically coupled isolators from Isocom Components. This series includes variants such as TLP521, TLP521-2, and TLP521-4, which share similar core technologies but differ in channel count and packaging options. The XG suffix typically denotes specific mechanical or electrical customizations within this product line.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include other TLP521 series variants like TLP521-4 or TLP521-4BLSM if pin compatibility and electrical parameters align. Verify that alternative components meet the 5.3kV RMS isolation and 50% CTR requirements.