DF18CC1-20.000MHZ-T

Crystals Overview

The DF18CC1-20.000MHZ-T is a fundamental mode quartz crystal from the D Series, manufactured by MMD (Monitor/Quartztek). It operates at a nominal frequency of 20 MHz with a tolerance of ±15 ppm and stability of ±30 ppm. The component features an equivalent series resistance (ESR) of 30 Ohms and a load capacitance of 18 pF. It utilizes an HC-49/US surface mount package with dimensions of 11.7 mm length, 4.8 mm width, and 4.5 mm height. The device supports a maximum drive level of 1 mW and functions within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Surface-mounted HC-49/US package design for automated assembly
• Fundamental AT-cut quartz resonator technology
• RoHS compliant construction

Crystals Applications

• Microcontroller clock circuits
• Communication interface timing
• Digital signal processing systems

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current part number guide to ensure correct tolerance and packaging specifications. Confirm that the required frequency stability and ESR values align with the target circuit design requirements before finalizing procurement orders.

Crystals Selection Notes

Select this component when a standard 20 MHz fundamental frequency is required in a compact SMD form factor. Ensure the application circuit can support the specified 18 pF load capacitance and 30 Ohm ESR characteristics. Verify that the operating temperature range meets the environmental constraints of the end product.

Crystals Part Context

This part belongs to the D Series of crystals offered by MMD, which provides a wide frequency range of fundamental and third overtone options. The series is designed for applications requiring reliable frequency control in consumer and industrial electronics, utilizing standard HC-49/US footprints adapted for surface mounting.

Crystals Replacement Considerations

Compatible substitutes include other 20 MHz HC-49/US SMD crystals with matching 18 pF load capacitance and similar ESR ratings. Cross-reference with Abracon or MMD family members such as DF18CC1 variants with different frequencies but identical electrical parameters.