CM7V-T1A-32.768KHZ-12.5PF-10PPM-TA-QC

Crystals Overview

The Micro Crystal CM7V-T1A-32.768KHZ-12.5PF-10PPM-TA-QC is a surface-mount tuning fork quartz crystal designed for precision timing applications. It operates at a standard frequency of 32.768 kHz with a tight initial frequency tolerance of ±10 ppm. The component features a load capacitance of 12.5 pF and supports a maximum series resistance of 70 kΩ. It is housed in a compact SMD package measuring 3.2 mm in length, 1.5 mm in width, and 0.65 mm in height. The unit is rated for an operating temperature range of -40°C to +85°C and complies with RoHS standards.

Crystals Feature Summary

• Hermetically sealed construction using gold-silicon alloy technology ensures high stability and low aging rates.
• Compact lightweight design suitable for space-constrained portable and wearable electronics.
• Low equivalent series resistance facilitates reliable oscillation start-up in low-power microcontroller circuits.

Crystals Applications

• Real-time clock circuits in battery-powered IoT sensors
• Precision timekeeping in medical monitoring devices
• Clock sources for automotive electronic control units
• Timing references in industrial metering equipment

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog to ensure alignment with required parameters. Confirm that the TA temperature grade and QC quality level match the project specifications. Cross-reference the load capacitance value with the target circuit design to guarantee accurate frequency performance. Ensure compliance with regional regulatory requirements such as RoHS before finalizing procurement orders.

Crystals Selection Notes

Select this component when strict frequency accuracy within ±10 ppm is required compared to standard ±20 ppm alternatives. Consider the hermetic sealing benefits for long-term stability in harsh environments. Evaluate the 12.5 pF load capacitance compatibility with the host MCU's internal or external capacitor network. Assess the thermal performance limits against the operational environment constraints.

Crystals Part Context

This part belongs to the CM7V-T1A series of tuning fork crystals manufactured by Micro Crystal AG. The series is characterized by its small form factor and robust hermetic packaging. Variants within the family differ primarily in frequency tolerance, load capacitance, and temperature range ratings, allowing customization for diverse application needs while maintaining consistent physical dimensions.

Crystals Replacement Considerations

Direct substitutes include other CM7V-T1A variants with adjusted tolerances or capacitances, such as those with ±20 ppm tolerance. Alternative manufacturers may offer comparable 32.768 kHz SMD crystals, but verification of pinout, dimensions, and electrical characteristics is essential.