DF18CC1-4.433619MHZ-T

Crystals Overview

The MMD DF18CC1-4.433619MHZ-T is a MHz crystal oscillator operating at a nominal frequency of 4.433619 MHz. It features a frequency tolerance of ±15 ppm and a frequency stability of ±30 ppm. The component utilizes an 18 pF load capacitance and exhibits a series resistance of 120 Ohms. It is housed in the HC-49/US package, which measures approximately 11.7mm x 4.8mm. This device belongs to the D Series of crystals manufactured by MMD.

Crystals Feature Summary

• Provides precise frequency generation for timing circuits
• Designed for surface-mount integration via HC-49/US package
• Ensures stable oscillation with specified load capacitance

Crystals Applications

• Video signal processing systems requiring PAL color subcarrier frequencies
• Microcontroller clock sources
• Communication equipment timing references

Crystals Procurement Notes

Verify the specific part number DF18CC1-4.433619MHZ-T against official MMD documentation to confirm active status and RoHS compliance. Ensure that the required load capacitance and series resistance match the target circuit design parameters before procurement.

Crystals Selection Notes

Select this component when a 4.433619 MHz reference is necessary for video or communication applications. Consider the ±15 ppm tolerance and 120 Ohm ESR requirements. The HC-49/US form factor dictates the available footprint on the printed circuit board.

Crystals Part Context

This crystal is part of MMD's D Series lineup, which offers various standard frequencies. The DF18CC1 variant specifically targets applications needing the 4.433619 MHz frequency, commonly associated with PAL video standards. It serves as a fundamental passive component for clock generation.

Crystals Replacement Considerations

Direct substitutes must match the 4.433619 MHz frequency, 18 pF load capacitance, and HC-49/US package dimensions. Verify equivalent electrical characteristics such as series resistance and stability ratings from other manufacturers.