7A-27.000MAAK-T

Crystals Overview

The 7A-27.000MAAK-T is a 27 MHz fundamental mode crystal manufactured by TXC Corporation, designed for surface-mount applications within the 7A series. It features a 3.2 mm x 2.5 mm SMD package with two solder pads and no leads. The component operates within a temperature range of -40°C to +85°C, maintaining a frequency stability of ±30 ppm across this span. It utilizes a standard load capacitance of 20 pF and exhibits an annual aging rate of ±3 ppm at 25°C. The device supports a typical drive level of 100 μW and includes a parallel resonant capacitance (C0) of up to 5 pF.

Crystals Feature Summary

• Glass-sealed construction provides enhanced resistance to moisture ingress and environmental stress compared to resin or ceramic packages.
• Optimized for standard SMT assembly processes, ensuring compatibility with automated pick-and-place equipment and reflow soldering profiles.
• High reliability design suitable for demanding industrial environments requiring stable clock signals over extended temperature ranges.

Crystals Applications

• Portable USB interface cards and data acquisition devices
• Personal Digital Assistants (PDAs) and mobile communication modules
• Digital cameras and imaging peripherals
• NFC readers and small-scale IoT sensor nodes

Crystals Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure alignment with required tolerance and packaging specifications. Confirm RoHS compliance status, noting that lead content in glass seals may fall under specific exemptions. Validate supply chain availability through authorized distributors, as stock levels fluctuate. Ensure procurement documentation matches the exact part number to avoid substitution errors during production integration.

Crystals Selection Notes

Select this component when a compact 3225 footprint is required alongside robust environmental durability. The glass seal offers superior performance over standard ceramic packages in high-humidity or thermal cycling conditions. Choose this model for designs needing ±30 ppm stability without the cost premium of tighter tolerances. Verify circuit drive levels remain within the 100 μW recommendation to prevent frequency drift or amplitude instability during operation.

Crystals Part Context

This crystal belongs to the TXC 7A series, which specializes in high-reliability, glass-sealed surface-mount crystals. The series targets applications where standard ceramic components fail due to environmental stress. The 7A series is widely recognized for its consistency in consumer electronics and industrial control systems, offering a balance between performance, size, and manufacturing yield.

Crystals Replacement Considerations

Direct substitutes include other 27 MHz crystals in 3225 packages with ±30 ppm stability and 20 pF load capacitance. Verify equivalent parameters such as ESR, drive level sensitivity, and operating temperature range before replacement. Cross-reference manufacturer-specific sealing technologies to ensure comparable environmental resilience.