MC-306 32.7680K-E0: ROHS

Crystals Overview

The MC-306 32.7680K-E0: ROHS is a surface-mount tuning fork crystal manufactured by Epson Timing. It operates at a nominal frequency of 32.768 kHz with a tolerance of ±20 ppm. The component features a load capacitance of 6 pF and an equivalent series resistance (ESR) of 35 kOhms maximum. Designed for base mode operation, it functions within a temperature range of -40°C to +85°C. The physical package is a 4-SOJ with a 5.50 mm pitch, measuring 8.00 mm in length, 3.20 mm in width, and up to 2.54 mm in height.

Crystals Feature Summary

• Surface-mount tuning fork crystal designed for precise timekeeping applications
• Compliant with RoHS 3 specifications for environmental safety
• Optimized for low power consumption in battery-operated devices

Crystals Applications

• Real-time clock circuits in consumer electronics
• Timekeeping modules in portable computing devices
• Embedded systems requiring stable low-frequency references

Crystals Procurement Notes

Verify the specific suffix against official Epson documentation to confirm electrical parameters such as load capacitance and ESR. Ensure the procurement channel provides valid traceability for RoHS compliance. Cross-reference the part number guide to distinguish between similar MC-306 variants that may differ in pitch or capacitance values.

Crystals Selection Notes

Select this component when a 6 pF load capacitance matches the oscillator circuit design. The 4-SOJ package requires adequate PCB space for the 5.50 mm pitch. Consider the ±20 ppm tolerance sufficient for standard real-time clock accuracy requirements within the specified industrial temperature range.

Crystals Part Context

This part belongs to the MC-306 series of tuning fork crystals from Epson Timing. The series offers various load capacitances and package configurations. The MC-306 variant specifically utilizes a 4-SOJ footprint, distinguishing it from other series members like the MC-406 which uses a different pitch dimension.

Crystals Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.