8Z-27.120MEEV-T

Crystals Overview

The TXC Corporation 8Z-27.120MEEV-T is a 27.12 MHz fundamental mode quartz crystal resonator housed in a 2.5 x 2.0 mm seam seal surface-mount package. It features a load capacitance of 8 pF and an equivalent series resistance (ESR) of 100 Ohms maximum. The component exhibits a frequency tolerance of ±10 ppm at 25°C and a frequency stability of ±10 ppm across the operating temperature range of -20°C to +70°C. Designed for low-power applications, it supports a maximum drive level of 1 μW. The unit weighs approximately 0.009 g and complies with RoHS standards, utilizing lead-free manufacturing processes suitable for automated SMT assembly.

Crystals Feature Summary

• Seam sealed ceramic construction providing hermetic protection against moisture and environmental contaminants
• Fundamental mode operation optimized for stable clock generation in microcontroller circuits
• Low equivalent series resistance facilitating reliable startup with standard oscillator drivers
• Compact surface-mount footprint designed for high-density PCB layouts

Crystals Applications

• Microcontroller system clock sources
• Bluetooth wireless communication modules
• Industrial sensor node timing references
• Consumer electronic device oscillators

Crystals Procurement Notes

Verify that the received components correspond to the Ax production version rather than Sx engineering samples, as specifications may differ between versions. Confirm RoHS compliance documentation for export requirements. Ensure storage conditions remain within specified limits to maintain aging characteristics. Validate supplier authenticity through official TXC channels to avoid counterfeit parts. Check date codes to prevent excessive inventory age affecting performance.

Crystals Selection Notes

Select this component when a 27.12 MHz reference is required for protocols such as Bluetooth or specific MCU architectures. The 8 pF load capacitance necessitates precise external capacitor matching accounting for PCB stray capacitance. Verify that the target application operates within the -20°C to +70°C range, as wider industrial temperatures require different stability grades. Ensure the oscillator circuit design limits drive power to 1 μW to prevent frequency drift or physical damage to the quartz element.

Crystals Part Context

This part belongs to the TXC 8Z series of miniature seam seal crystals. The series utilizes a ceramic base and Kovar lid structure for enhanced reliability compared to plastic packages. The 2520 package size represents a balance between electrical performance and board space efficiency. This specific model targets cost-sensitive consumer electronics requiring moderate frequency stability without the need for oven-controlled precision.

Crystals Replacement Considerations

Direct substitutes must match the 27.12 MHz frequency, 8 pF load capacitance, and 2.5 x 2.0 mm seam seal package. Verify ESR limits and drive level compatibility with the host oscillator circuit. Cross-reference pinout configurations if available, though surface-mount crystals typically lack polarity. Confirm temperature stability ranges align with the final product's operational environment.