7M-20.250MEEJ-T

Crystals Overview

The TXC Corporation 7M-20.250MEEJ-T is a surface-mount MHz quartz crystal operating at 20.25 MHz. It features a frequency stability of ±10 ppm across the commercial temperature range of -20°C to +70°C and an initial tolerance of ±10 ppm at 25°C. The component utilizes a 10 pF load capacitance and operates within a 3.2 mm x 2.5 mm SMD package with four solder pads. Key electrical parameters include a maximum equivalent series resistance (ESR) of 50 Ohms and a drive level of 100 uW.

Crystals Feature Summary

• Seam-sealed ceramic construction for environmental protection
• Low profile surface-mount design compatible with automated assembly
• Stable frequency performance within specified industrial temperature limits

Crystals Applications

• Digital clock signal generation in consumer electronics
• Microcontroller system timing references
• Communication interface synchronization circuits

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct tolerance and packaging specifications. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Cross-reference the Mouser or DigiKey part numbers to validate current availability and lead times. Ensure the selected variant matches the required load capacitance for the target circuit design.

Crystals Selection Notes

Select this component when a compact 3.2x2.5 mm footprint is required for 20.25 MHz applications. It is suitable for designs needing ±10 ppm stability over a -20°C to +70°C range. Consider the 10 pF load capacitance requirement for oscillator circuit matching. Evaluate the 50 Ohm ESR limit against the host oscillator's drive capability to prevent over-driving the crystal.

Crystals Part Context

This part belongs to the TXC 7M series of seam-sealed quartz crystals. These components are designed for general-purpose timing applications requiring reliable performance in standard surface-mount processes. The series offers various frequencies and tolerances within the same physical envelope, facilitating supply chain flexibility for common clock requirements.

Crystals Replacement Considerations

Direct substitutes must match the 20.25 MHz frequency, 3.2x2.5 mm package, and ±10 ppm stability. Verify that alternative crystals support the same 10 pF load capacitance and 100 uW drive level. Check compatibility with the existing PCB footprint and reflow soldering profiles.