7M-25.000MDHE-T

Crystals Overview

The 7M-25.000MDHE-T is a surface-mount quartz crystal resonator manufactured by TXC Corporation, designed for precision timing applications. It operates at a nominal frequency of 25 MHz with a frequency tolerance and stability of ±20 ppm across the operating temperature range. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 50 Ohms. It supports a maximum drive level of 50 µW to ensure stable oscillation without overdriving the crystal element. The device is housed in a compact 3.2 mm x 2.5 mm x 0.7 mm SMD package, suitable for automated assembly processes. It functions within a temperature range of -40°C to +85°C, providing reliable performance in various electronic circuits requiring accurate clock signals.

Crystals Feature Summary

• Provides precise 25 MHz timing reference with ±20 ppm stability
• Compact 3.2mm x 2.5mm surface-mount design for space-constrained PCBs
• Operates reliably across extended industrial temperature ranges
• Optimized drive level protection ensures long-term frequency stability

Crystals Applications

• Microcontroller clock source generation
• Communication interface synchronization
• Digital signal processing timing references
• Embedded system oscillator circuits

Crystals Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm that the 12 pF load capacitance matches the host circuit's requirements to maintain frequency accuracy. Ensure the PCB footprint aligns with the 3.2x2.5 mm package dimensions. Check for RoHS compliance status if environmental regulations apply to the final product assembly.

Crystals Selection Notes

Select this component when a 25 MHz fundamental mode crystal is required with moderate stability needs. The 12 pF load capacitance suits circuits with standard external capacitors. Consider the 50 Ohm ESR for driver strength compatibility. This part is appropriate for general-purpose digital logic where ±20 ppm tolerance is acceptable compared to higher-precision TCXO alternatives.

Crystals Part Context

This part belongs to the 7M series of SMD quartz crystals from TXC Corporation. The series focuses on cost-effective solutions for consumer and industrial electronics. The 7M designation typically denotes a standard seam-sealed or glass-sealed package variant optimized for high-volume manufacturing. It serves as a foundational timing element in systems where size and cost are critical factors alongside basic frequency accuracy.

Crystals Replacement Considerations

Direct substitutes must match the 25 MHz frequency, 12 pF load capacitance, and 3.2x2.5 mm package. Verify ESR values near 50 Ohms to prevent oscillation failure. Cross-reference with other manufacturers' 25MHz SMD crystals having identical electrical parameters and thermal ratings.