DF18CC1-16.9344MHZ-T

Crystals Overview

The MMD DF18CC1-16.9344MHZ-T is a surface-mount MHz crystal operating at 16.9344 MHz with ±15 ppm frequency tolerance and ±30 ppm stability. It features an 18 pF load capacitance, 40 Ohms equivalent series resistance (ESR), and HC-49/US package dimensions of 11.70mm x 5.00mm x 4.50mm max height. Designed for fundamental mode operation across -40°C to +85°C, it complies with RoHS3 standards.

Crystals Feature Summary

• Surface mount design in standard HC-49/US form factor
• Fundamental oscillation mode for precise timing applications
• RoHS3 compliant construction for environmental safety

Crystals Applications

• Digital clock signal generation
• Microcontroller system clocks
• Communication interface timing

Crystals Procurement Notes

Verify the specific ordering suffix matches the required tape-and-reel or cut-tape configuration. Confirm that the HC-49/US footprint on the target PCB aligns with the specified 11.70mm x 5.00mm dimensions. Ensure the design accommodates the maximum mounting height of 4.50mm to prevent mechanical interference during assembly.

Crystals Selection Notes

Select this component when a fundamental mode crystal with 18pF load capacitance is required. The 40 Ohm ESR specification must match the oscillator circuit's drive level constraints. Verify that the ±15 ppm initial tolerance meets the system's frequency accuracy requirements within the -40°C to +85°C operating range.

Crystals Part Context

This part belongs to the MMD D Series of crystals. It shares the HC-49/US package style with other variants in the lineup but differs in frequency and electrical parameters. The series provides standardized surface-mount solutions for general-purpose timing needs.

Crystals Replacement Considerations

Ecliptek E1SJA18-16.9344M TR is documented as a similar substitute. Verify pin compatibility and electrical parameter alignment before substitution.