HMA121FV

Transistor, Photovoltaic Output Optoisolators Overview

The onsemi HMA121FV is a single-channel transistor output optocoupler designed for surface mount applications. It features an NPN phototransistor output with a maximum collector-emitter voltage of 80 V and a maximum collector current of 80 mA. The device provides high isolation capability with an insulation voltage of 3750 Vrms. Key electrical parameters include a forward current of 50 mA, a forward voltage of 1.3 V, and a reverse voltage of 6 V. Power dissipation is rated at 150 mW. The unit operates within a temperature range of -40°C to +100°C and utilizes an SMD-4 package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor configuration.
• Offers high dielectric strength with a 3750 Vrms insulation rating for safety-critical signal transmission.
• Designed for compact surface mount integration with a small four-terminal footprint.

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Communication interface isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to availability constraints. Confirm RoHS compliance status and specific packaging details prior to order placement. Check for obsolescence notices or lifecycle changes that may affect long-term supply stability. Ensure storage conditions meet specified humidity and temperature limits to maintain device integrity.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Evaluate the required isolation voltage against system safety standards to ensure the 3750 Vrms rating is sufficient. Consider the CTR (Current Transfer Ratio) specifications for adequate signal coupling efficiency in the target circuit design. Assess thermal management requirements given the 150 mW power dissipation limit in enclosed environments. Verify compatibility with available PCB footprints for the SMD-4 package type.

Transistor, Photovoltaic Output Optoisolators Part Context

This component belongs to the broader category of transistor output optoisolators manufactured by onsemi. These devices are engineered to provide reliable electrical isolation while transmitting digital or analog signals across different potential domains. The HMA121FV specifically targets applications needing robust noise immunity and compact form factors in modern electronic assemblies.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers: HCPL-181-000E (Broadcom Limited).