MC-156 32.7680KA-AG0: ROHS

Crystals Overview

The EPSON MC-156 32.7680KA-AG0: ROHS is a surface-mount tuning fork crystal designed for precise timing applications. It operates at a fundamental frequency of 32.768 kHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 7 pF and an equivalent series resistance (ESR) of 65 kOhms maximum. It utilizes a 4-SOJ package with a 5.08 mm pitch, measuring 7.10 mm in length, 2.50 mm in width, and 1.50 mm in height. The device supports base harmonic operation and functions within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Provides stable 32.768 kHz timing signals via fundamental mode operation
• Utilizes compact 4-SOJ surface-mount packaging for automated assembly
• Maintains frequency stability within ±20 ppm tolerance across operating temperatures

Crystals Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system clocks
• Portable battery-powered devices requiring low power consumption

Crystals Procurement Notes

Verify the specific load capacitance requirement of 7 pF against the target circuit design to ensure accurate frequency generation. Confirm that the 4-SOJ package dimensions align with the PCB footprint constraints. Ensure compliance with RoHS3 specifications if environmental regulations apply to the final product assembly process.

Crystals Selection Notes

Select this component when a standard 32.768 kHz reference is required for timekeeping or low-frequency synchronization. The 7 pF load capacitance specification distinguishes it from other variants in the MC-156 series. Consider the ±20 ppm tolerance sufficient for general-purpose real-time clock applications where high precision is not critical.

Crystals Part Context

This part belongs to the EPSON MC-156 series of miniature SMD crystals. It serves as a direct replacement for older through-hole or larger SMD tuning fork crystals in space-constrained designs. The series is widely used in embedded systems requiring reliable, low-power clock sources.

Crystals Replacement Considerations

• FC-135 32.7680KA-A5