MC3051P

Flip Flops Overview

The MC3051P is a six-pin DIP random-phase optoisolator featuring an internal GaAs infrared LED coupled to a non-zero-crossing silicon bilateral AC switch (triac). Designed by Motorola, this component isolates low-voltage logic circuits from 115 and 240 Vac power lines. It provides random phase control for high-current triacs or thyristors. The device offers enhanced static dv/dt capability to ensure stable switching performance when driving inductive loads.

Flip Flops Feature Summary

• Integrates a GaAs infrared LED with a non-zero-crossing silicon bilateral AC switch for isolated random phase control
• Provides electrical isolation between low-voltage logic signals and high-voltage AC mains
• Features enhanced static dv/dt capability to maintain stable switching performance under inductive load conditions

Flip Flops Applications

• Solenoid and valve controls
• Lamp ballasts and incandescent lamp dimmers
• Static AC power switches and solid state relays
• Interfacing microprocessors to 115 and 240 Vac peripherals
• Temperature controls and motor controls

Flip Flops Procurement Notes

Verify the specific suffix 'P' confirms the plastic DIP package variant. Confirm RoHS compliance status as older Motorola components may not meet current environmental standards. Ensure the application circuit accounts for the non-zero-crossing behavior, which allows firing at any point in the AC cycle rather than only at voltage zero crossings.

Flip Flops Selection Notes

Select this component when random phase control is required for AC loads. The non-zero-crossing output distinguishes it from zero-crossing variants suitable for resistive loads. Verify that the input drive current matches the internal LED requirements. Ensure the isolation voltage ratings meet the safety requirements of the target 115 or 240 Vac system.

Flip Flops Part Context

This part belongs to the MOC3051 series of optoisolators manufactured by Motorola. The series is designed for interfacing low-voltage digital logic with high-voltage AC power systems. The 'P' suffix typically denotes the plastic dual in-line package configuration used for through-hole mounting on printed circuit boards.

Flip Flops Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.