HMA121V

Transistor, Photovoltaic Output Optoisolators Overview

The HMA121V is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and utilizes a surface-mount SMD-4 package. The device provides an isolation voltage of 3750 Vrms, ensuring robust electrical separation between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a power dissipation rating of 150 mW. The component operates within a temperature range of -40°C to +100°C and supports a forward current of 50 mA with a typical forward voltage of 1.3 V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage isolation capability for signal transmission across isolated domains
• Integrates an infrared emitting diode with an NPN phototransistor for efficient optical coupling
• Designed for surface-mount assembly to facilitate automated PCB placement

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial automation control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Solid-state relay driver circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix variant against official datasheets, as packaging formats such as bulk or tape-and-reel may differ. Confirm RoHS compliance status through manufacturer documentation before integration. Check current lifecycle status, as availability may be limited due to end-of-life designations. Ensure thermal management aligns with the specified power dissipation limits during operation.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a compact, single-channel isolation solution is required for low-to-medium speed digital signals. Consider the 3750 Vrms isolation rating for safety-critical applications. Evaluate the NPN output configuration against system logic requirements. Compare thermal performance and package constraints with alternative SMD-4 optocouplers if space or heat dissipation is a primary constraint.

Transistor, Photovoltaic Output Optoisolators Part Context

The HMA121V belongs to the HMA121 series of transistor output optocouplers from onsemi. This family is engineered for general-purpose isolation tasks in industrial and consumer electronics. The part shares core electrical characteristics with variants like HMA121E and HMA121AR3, differing primarily in packaging and binning specifications. It serves as a standard component for basic signal transfer across isolated boundaries.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include HMA121E and HMA121AR3, which share identical pinouts and electrical ratings. Verify that any replacement matches the specific CTR binning and packaging requirements of the original design.