OLC449

Overview

The OLC449 is a radiation-tolerant phototransistor optocoupler manufactured by Skyworks Solutions Inc. It features a hermetic LCC-6 surface-mount package designed for high-reliability applications in harsh environments. Key electrical parameters include an insulation voltage of 1000 Vrms, a forward current (If) of 1 A, and a maximum collector current of 40 mA. The device exhibits a forward voltage (Vf) of 1.9 V, a maximum collector-emitter saturation voltage of 300 mV, and rise/fall times of 25 µs each.

Feature Summary

• Radiation tolerant construction suitable for gamma, neutron, and proton exposure
• Hermetic packaging ensures reliability in extreme conditions
• High electrical isolation capability for safety-critical circuits

Applications

• Spacecraft avionics systems
• Nuclear instrumentation electronics
• High-altitude satellite communication modules

Procurement Notes

Verify component authenticity through authorized Skyworks distributors or direct manufacturer channels due to limited availability. Confirm lot traceability and radiation testing certificates are included with the shipment. Ensure storage conditions meet hermetic seal requirements to maintain performance specifications prior to installation.

Selection Notes

Select this component when radiation hardness and hermetic sealing are mandatory requirements. Compare CTR degradation characteristics against standard optocouplers if operating in high-radiation zones. Verify that the LCC-6 footprint aligns with existing PCB layouts and thermal management strategies for surface-mount assembly.

Part Context

This part belongs to Skyworks' specialized line of radiation-hardened optoelectronic components. It serves as a robust isolation solution where standard commercial-grade devices would fail due to single-event effects or total ionizing dose accumulation. The design prioritizes long-term stability over cost efficiency.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Standard commercial equivalents lack the required radiation tolerance and hermetic sealing properties.