DF18CC1-18.432MHZ-T

Crystals Overview

The DF18CC1-18.432MHZ-T is a surface-mount crystal from the MMD D Series, operating at 18.432 MHz with an HC-49/US package. It features a load capacitance of 18 pF and a frequency tolerance of ±15 ppm at 25°C. The unit maintains a frequency stability of ±30 ppm across the -40°C to +85°C operating range. Key electrical parameters include a maximum equivalent series resistance (ESR) of 70 Ohms and a drive level of 1 mW max. Physical dimensions are 11.7 mm in length, 4.8 mm in width, and 4.5 mm in height.

Crystals Feature Summary

• Surface mount design utilizing HC-49/US package geometry for automated assembly compatibility
• Fundamental mode operation providing stable oscillation at specified frequencies
• Compliance with RoHS standards for environmental safety requirements

Crystals Applications

• Clock generation for microprocessors and microcontrollers
• Timing references for communication interfaces such as UART and SPI
• Oscillator circuits in consumer electronic devices requiring precise timekeeping

Crystals Procurement Notes

Verify the manufacturer designation on official documentation, as some listings may attribute this part to ABRACON while others cite MMD Monitor/Quartztek. Confirm that the specific suffix matches the required frequency and tolerance specifications. Ensure the procurement channel provides valid datasheets matching the HC-49/US SMD form factor. Cross-reference the part number against current product portfolios to confirm availability status and manufacturing origin before finalizing orders.

Crystals Selection Notes

Select this component when a surface-mount solution is required for 18.432 MHz applications. The 18 pF load capacitance must match the oscillator circuit design. Consider the ±30 ppm stability requirement for temperature variations between -40°C and +85°C. The 70 Ohm ESR limit should be compatible with the driving circuit's power constraints. Verify that the physical footprint fits the PCB layout constraints for the HC-49/US package.

Crystals Part Context

This crystal belongs to the D Series line of surface-mount components from MMD. The series offers various frequencies within the HC-49/US form factor. These parts are designed for fundamental mode operation. The series supports standard commercial temperature ranges. The packaging facilitates reflow soldering processes for high-volume manufacturing environments.

Crystals Replacement Considerations

Direct substitutes include other manufacturers' HC-49/US SMD crystals with identical 18.432 MHz frequency, 18 pF load capacitance, and comparable stability ratings. Verify that alternative parts meet the same ESR and drive level specifications. Ensure the replacement component adheres to the same physical dimensions and mounting style.