HMA121DV

Transistor, Photovoltaic Output Optoisolators Overview

The HMA121DV is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output housed in a compact 4-SMD (gull wing) package. The device provides high isolation with a rated insulation voltage of 3750 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 80 mA, and a forward current rating of 50 mA. The unit operates within a temperature range of -40°C to +100°C and has a power dissipation capacity of 150 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using light transmission.
• Features an NPN phototransistor output for standard switching applications.
• Designed for surface-mount installation in a small form factor package.

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Input/output interface isolation in consumer electronics
• Power supply feedback loop isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'DV' against the manufacturer's latest datasheet to confirm package type and tape/reel specifications. Confirm RoHS compliance status as required by your assembly standards. Check for obsolescence notices or lifecycle changes from onsemi before finalizing design-in decisions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-cost, single-channel isolation solution with moderate speed is required. Ensure the circuit design accommodates the 80 V collector-emitter voltage limit and the 50 mA forward current requirement. Verify that the 3750 Vrms isolation rating meets the safety requirements of the target application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMA121 series of transistor output optocouplers from onsemi. The series is designed for general-purpose isolation tasks where cost-effectiveness and reliability are prioritized over high-speed performance. The HMA121DV variant specifically denotes the 4-SMD gull wing package configuration.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other 4-pin SMD transistor optocouplers with similar CTR and isolation ratings. Verify pinout compatibility and electrical limits before substitution. Consult onsemi documentation for recommended alternatives if this part is discontinued.