ISP521-1GB

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-1GB is a single-channel phototransistor optocoupler manufactured by Isocom Components. It integrates an infrared emitting diode and an NPN silicon phototransistor within a compact DIP-4 package. The device provides electrical isolation between input and output circuits, featuring a collector-emitter breakdown voltage of 55 V and a maximum forward current of 50 mA. It operates reliably across a temperature range of -30 °C to 100 °C and includes UL recognition for safety compliance.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared LED with an NPN silicon phototransistor for signal transmission
• Provides high-density mounting in a space-efficient dual in-line plastic package
• Ensures electrical isolation between input and output circuits

Transistor, Photovoltaic Output Optoisolators Applications

• Logic-to-logic isolation in noisy environments
• Line receiver circuits
• Programmable current level sensors
• Power supply digital programming
• Computer and peripheral device interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'GB' against the manufacturer's official datasheet to confirm exact pinout configuration and packaging specifications. Ensure that any ordering suffixes do not alter the functional characteristics or electrical ratings defined in the standard component documentation before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single-channel transistor output isolator is required for general-purpose applications. Consider the DIP-4 package constraints and the 55 V collector-emitter voltage rating relative to the target circuit requirements. Verify thermal management needs given the 100 °C maximum operating temperature limit.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP521/ISP521 series of optically coupled isolators from Isocom Components. These devices are designed as industry-standard replacements for common commercial optocouplers. The series typically offers various channel configurations, including single, dual, and quad options, packaged in DIP formats.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Potential substitutes include the TLP521-1, TLP621-1, and SFH615A. Verify pin compatibility and electrical parameters such as CTR and isolation voltage against the original design requirements before substitution.