HMA121CR2

Transistor, Photovoltaic Output Optoisolators Overview

The HMA121CR2 is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output housed in a compact SMD-4 package. The device provides an isolation voltage of 3750 Vrms, ensuring robust signal transmission across isolated circuits. Key electrical parameters include a collector-emitter saturation voltage of 400 mV maximum and a collector current rating of 80 mA. The unit operates within a temperature range of -40°C to +100°C and supports a forward current of 50 mA with a typical rise and fall time of 3 µs.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage galvanic isolation between input and output circuits
• Features fast switching performance suitable for digital signal transmission
• Utilizes a compact surface-mount package for automated assembly

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in microprocessor interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix and revision level against the manufacturer's latest documentation to ensure compatibility with design requirements. Confirm that the component meets all relevant safety certifications required for the target application environment. Cross-reference datasheet specifications directly with official sources prior to finalizing procurement decisions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and moderate speed are required in a small footprint. Ensure the load current does not exceed the 80 mA collector current limit. Verify that the operating temperature range aligns with the system's thermal constraints. Consider the CTR variations if precise gain control is necessary for the circuit design.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the family of transistor output optoisolators designed for general-purpose isolation tasks. It serves as a standard solution for breaking ground loops and protecting sensitive electronics from high-voltage transients in industrial and commercial equipment environments.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The FODM121CR2 is listed as a direct substitute. Verify pinout compatibility and electrical parameter alignment before implementation.