CM7V-T1A-32.768KHZ-12.5PF-20PPM-TC-QC

Crystals Overview

The CM7V-T1A-32.768KHZ-12.5PF-20PPM-TC-QC is a surface-mount tuning fork quartz crystal manufactured by Micro Crystal AG. It operates at a standard frequency of 32.768 kHz with a load capacitance of 12.5 pF and a frequency tolerance of ±20 ppm. The component features a maximum equivalent series resistance (ESR) of 70 kΩ and supports a maximum drive power of 1 μW. It utilizes a hermetically sealed ceramic package with dimensions of 3.2 mm in length, 1.5 mm in width, and 0.9 mm in height. The device is qualified to AEC-Q200 standards and functions within an extended temperature range of -55°C to +125°C.

Crystals Feature Summary

• Hermetically sealed ceramic construction ensures high stability and environmental protection
• Extended temperature rating suitable for demanding industrial and automotive environments
• Low drive power requirement compatible with low-power real-time clock circuits

Crystals Applications

• Automotive electronic control units requiring AEC-Q200 compliance
• Industrial metering systems operating in extreme temperatures
• Medical devices requiring reliable timing sources
• IoT sensors deployed in harsh outdoor conditions

Crystals Procurement Notes

Verify the specific suffix 'TC' confirms the -55°C to +125°C temperature range during ordering. Ensure the 12.5 pF load capacitance matches the target microcontroller's RTC circuit design. Confirm AEC-Q200 qualification status if automotive application is required. Check datasheet for soldering profile limits to prevent seal damage.

Crystals Selection Notes

Select this variant when wide temperature operation below -40°C is mandatory. The 12.5 pF load capacitance suits most standard RTC interfaces without external matching capacitors. Consider the 70 kΩ ESR limit against MCU drive capability. Verify package dimensions fit the PCB layout constraints for 3.2 x 1.5 mm footprints.

Crystals Part Context

This part belongs to the CM7V-T1A family of tuning fork crystals designed for precision timekeeping. The TC suffix denotes the extended temperature grade compared to standard TA or TB variants. It serves as a critical clock source for real-time counting applications across consumer, industrial, and automotive sectors.

Crystals Replacement Considerations

Direct substitutes include other AEC-Q200 certified 32.768 kHz crystals with identical 12.5 pF load and -55/+125°C ratings. Verify mechanical footprint compatibility and electrical parameters before substitution.