TLP521-4X

Transistor, Photovoltaic Output Optoisolators Overview

The TLP521-4X is a high-density mounting phototransistor optically coupled isolator manufactured by Isocom Components. It integrates four independent channels, each comprising an infrared light emitting diode and an NPN silicon photo transistor within a space-efficient dual in line plastic package. The device provides electrical isolation with a maximum isolation voltage of 5300Vrms and a minimum collector-emitter breakdown voltage (BVCEO) of 55V. It features a minimum current transfer ratio of 50% and operates within a temperature range of -30°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates four independent optically coupled isolator channels in a single package for high-density mounting applications.
• Provides high electrical isolation capability with a rated isolation voltage of 5300Vrms between input and output circuits.
• Ensures reliable signal transmission through a minimum current transfer ratio of 50% and a high collector-emitter breakdown voltage of 55V.

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 designation against official documentation to confirm pin spacing and packaging variations. Confirm that the requested part matches the exact channel count and electrical ratings required for the target circuit design. Ensure compliance with relevant safety standards such as UL recognition before integration into end products.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multiple isolated channels are required in a compact form factor. Consider the 50% minimum current transfer ratio for logic level interfacing and verify that the 55V collector-emitter voltage rating exceeds the maximum load voltage in the application circuit.

Transistor, Photovoltaic Output Optoisolators Part Context

The TLP521 series consists of infrared LED and NPN phototransistor pairs designed for general-purpose isolation. The TLP521-4 variant specifically offers four channels in a 16-pin DIP package, distinguishing it from single-channel or dual-channel counterparts in the same family.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

TLP521-4XGB

Transistor, Photovoltaic Output Optoisolators FAQ

What is the structure of the TLP521-4X?

It consists of four independent channels, where each channel contains an infrared light emitting diode and an NPN silicon photo transistor.

What is the minimum current transfer ratio for this device?

The minimum current transfer ratio is specified as 50%.