ISP521-1XG

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-1XG is a single-channel transistor output optocoupler manufactured by Isocom Components. It integrates an infrared light-emitting diode with an NPN silicon phototransistor in a DIP-4 package. Key electrical parameters include a minimum collector-emitter breakdown voltage (BVCEO) of 55V, a maximum forward current of 50mA, and a nominal current transfer ratio of 100%. The device supports a maximum operating temperature of 100°C and offers high isolation voltage capabilities.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared LED with an NPN silicon phototransistor for signal isolation
• Provides high isolation voltage ratings for safe potential separation
• Features high current transfer ratio for efficient signal transmission
• Available in space-efficient dual in-line plastic packaging

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals and peripheral interfaces
• Industrial system controllers and programmable logic controllers
• Measuring instruments and data acquisition systems
• Signal transmission between circuits with different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'XG' against official Isocom documentation to confirm lead-free status and RoHS compliance details. Ensure the ordering code matches the required package variant and electrical selection. Confirm availability through authorized distributors as standard stock levels vary. Request updated datasheets to validate current manufacturing specifications before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when single-channel galvanic isolation is required between low-voltage control circuits and higher-voltage loads. The NPN phototransistor output is suitable for digital switching applications. Consider the 55V breakdown voltage limit for load compatibility. Verify that the DIP-4 package fits the available PCB real estate and mounting constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP521 series family, which includes single, dual, and quad channel variants. Isocom manufactures these devices as industry-standard replacements for legacy optocouplers. The series is designed for general-purpose isolation in commercial and industrial electronics, offering consistent performance across multiple package options.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Engineers should consult official cross-reference lists from Isocom or verify pin-compatible alternatives based on matching electrical parameters such as CTR, BVCEO, and isolation voltage.