MOC3043TVM

Triac, SCR Output Optoisolators Overview

The MOC3043TVM is a zero-crossing triac output optocoupler from onsemi, designed for AC power control applications. It features a single channel with a PhotoTriac output and integrated zero-crossing circuitry to minimize electromagnetic interference. The device operates in a 6-pin PDIP package with through-hole mounting. Key electrical parameters include a maximum forward voltage of 1.25V, a maximum trigger current of 5mA, and an isolation voltage of 5250 Vrms. It supports a peak repetitive off-state voltage (VDRM) of 400V and functions within a temperature range of -40°C to +85°C.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for reduced noise generation during switching
• Robust 400V DRM rating suitable for general AC load control
• High isolation voltage capability ensuring safe separation between input and output circuits

Triac, SCR Output Optoisolators Applications

• Solid state relays for AC loads
• Motor speed control circuits
• Light dimmer applications

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix 'TVM' against the manufacturer's official datasheet to confirm packaging type and tape/reel specifications. Ensure the component meets required safety certifications such as UL or VDE for the intended application environment. Cross-reference the part number with authorized distributors to confirm authenticity and avoid counterfeit components.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to reduce electrical noise in AC control systems. Compare the 400V VDRM rating against the peak line voltage to ensure adequate margin. Consider the 5mA max trigger current compatibility with the driving microcontroller or logic interface. Verify that the PDIP-6 package fits the PCB layout constraints.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC30 series of zero-crossing triac output optocouplers by onsemi. It is functionally similar to the MOC3041 and MOC3042 but distinguished by its specific trigger current characteristics and zero-crossing timing. The 'TVM' suffix typically denotes a specific tape and reel packaging option compared to tube-packaged variants like the MOC3043M.

Triac, SCR Output Optoisolators Replacement Considerations

• MOC3043M

Triac, SCR Output Optoisolators FAQ

What is the purpose of the zero-crossing circuit in the MOC3043TVM?

The zero-crossing circuit ensures that the internal triac turns on only when the AC line voltage is near zero. This minimizes inrush currents and reduces radio frequency interference (RFI) generated during switching.

How does the MOC3043TVM isolate the control circuit from the load?

It provides galvanic isolation between the input LED side and the output PhotoTriac side. The device offers an isolation voltage of 5250 Vrms, protecting low-voltage control electronics from high-voltage AC loads.