SG-9101CG-D40PGDBA

Overview

The SG-9101CG-D40PGDBA is a precision ceramic resonator manufactured by Epson. It operates at a fundamental frequency of 40 MHz with a load capacitance of 12.5 pF. The device features a low equivalent series resistance (ESR) typically ranging from 30 to 60 ohms, ensuring stable oscillation in microcontroller circuits. It utilizes a surface-mount package measuring 3.2 mm by 2.5 mm with a height of 0.8 mm. The component is designed for high reliability and offers excellent frequency stability across temperature variations, making it suitable for clock generation applications.

Feature Summary

• High frequency stability with tight tolerance specifications
• Low equivalent series resistance for efficient power consumption
• Compact surface-mount design for automated assembly

Applications

• Microcontroller clock sources
• Real-time clock circuits
• Communication interface timing

Procurement Notes

Verify the specific ordering code against official Epson documentation to ensure correct load capacitance and tolerance levels. Confirm that the supply chain source provides genuine components with traceable manufacturing data. Check for any recent updates to the datasheet regarding recommended soldering profiles or storage conditions to maintain component integrity during assembly processes.

Selection Notes

Select this component when a compact, cost-effective alternative to quartz crystals is required for moderate stability applications. Ensure the target circuit can accommodate the specified load capacitance of 12.5 pF. Consider the ESR limits relative to the oscillator circuit's drive level requirements to prevent overdriving the resonator and causing frequency drift or failure.

Part Context

This part belongs to Epson's SG-9101 series of ceramic resonators, which are widely used in consumer electronics and industrial control systems. The series is known for providing a balance between performance and size, offering a smaller footprint compared to traditional crystal units while maintaining sufficient accuracy for many digital logic applications.

Replacement Considerations

Direct substitutes include other 40 MHz ceramic resonators with identical 12.5 pF load capacitance and similar physical dimensions. Verify that alternative parts meet the same ESR specifications and frequency tolerance requirements to ensure circuit compatibility without redesign.