ISP521-2

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-2 is a high-density mounting phototransistor optically coupled isolator manufactured by Isocom Components. It features two independent channels within an 8-pin surface mount package, providing electrical isolation with a voltage rating of 5300Vrms. The device utilizes infrared light emitting diodes paired with NPN silicon phototransistors for signal transmission. Key electrical characteristics include a maximum forward voltage of 1.3V and a maximum input current of 50mA. The typical rise time is 4μs, while the typical fall time is 3μs. The minimum current transfer ratio is specified at 0.5%, with a maximum of 6%. Operating temperatures range from -30°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Dual-channel optical isolation using infrared LED and NPN phototransistor configuration
• High-density surface mount packaging for compact circuit board layouts
• Robust electrical isolation capability rated at 5300Vrms between input and output circuits

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring galvanic isolation
• Power supply protection circuits
• Smart metering applications
• Gas detection and monitoring equipment

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific ordering suffix matches the required package type, as variations exist between through-hole DIP and surface mount SMD configurations. Confirm channel count and pinout compatibility with the target PCB footprint. Ensure thermal operating limits align with the application environment. Cross-reference manufacturer datasheets for precise mechanical dimensions and soldering profiles before integration.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation is required in a space-constrained design. Compare current transfer ratio specifications against logic level requirements. Evaluate package density advantages over standard DIP alternatives. Consider thermal performance within the -30°C to 100°C operational range. Verify isolation voltage ratings meet safety standards for the intended electrical interface.

Transistor, Photovoltaic Output Optoisolators Part Context

The ISP521-2 belongs to the TLP521 series family of phototransistor optocouplers produced by Isocom Components. This series offers industry-standard replacements for common commercial optocoupler types. The component provides specialized parameter selection to meet specific circuit design requirements. It is part of a broader portfolio including single-channel and multi-channel variants in various package formats.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The TLP521-2 serves as a direct functional equivalent within the same product family. Other Isocom variants such as ISP521-2SM or ISP521-2XGB offer similar electrical characteristics but differ in package style. Verify pin compatibility and isolation ratings when substituting with cross-manufacturer parts.