DF18CC1-7.3728MHZ-T

Crystals Overview

The DF18CC1-7.3728MHZ-T is a 7.3728 MHz fundamental mode crystal resonator manufactured by MMD. It features a frequency stability of ±15 ppm and a load capacitance of 18 pF. The component exhibits an equivalent series resistance (ESR) of 90 Ohms. It utilizes the HC-49/US package style, with physical dimensions measuring 0.461 inches in length and 0.197 inches in width (11.70mm x 5.00mm). The device is RoHS compliant and lead-free.

Crystals Feature Summary

• Fundamental mode quartz crystal operation for precise frequency generation
• Standard HC-49/US through-hole package configuration
• RoHS compliant and lead-free construction

Crystals Applications

• Microcontroller clock sources
• Communication interface timing circuits
• General-purpose oscillator circuits

Crystals Procurement Notes

Verify the specific ESR value against the official manufacturer datasheet, as distributor listings may vary between 90 Ohms and 120 Ohms for similar part numbers. Confirm that the required frequency tolerance of ±15 ppm meets the system design requirements. Ensure the HC-49/US package footprint matches the PCB layout constraints before finalizing procurement orders.

Crystals Selection Notes

Select this component when a standard 7.3728 MHz frequency is required for baud rate compatibility in serial communication protocols. The HC-49/US package is suitable for through-hole assembly processes. Consider the ±15 ppm stability specification to ensure it aligns with the timing accuracy needs of the target application circuit.

Crystals Part Context

This crystal belongs to the DF18CC1 series from MMD, which provides fundamental mode resonators for general timing applications. The series supports various frequencies and is designed for use in consumer electronics and industrial control systems requiring stable clock signals.

Crystals Replacement Considerations

Direct substitutes include other manufacturers' HC-49/US crystals with identical 7.3728 MHz frequency, 18 pF load capacitance, and comparable ESR values. Verify pin compatibility and mechanical dimensions before substitution.