QT325S-55.200MDHB-T

Overview

The QT325S-55.200MDHB-T is a surface-mount crystal oscillator manufactured by QST, designed for precision timing applications in electronic circuits. This component operates at a fundamental frequency of 55.2 MHz and utilizes a 4-SMD, No Lead package configuration suitable for automated assembly processes. The device features a load capacitance of 18 pF and exhibits a frequency stability of ±20 ppm across the specified operating temperature range. It maintains a resonator tolerance of ±20 ppm to ensure accurate signal generation. The unit supports an operating temperature range from -40°C to +85°C, providing reliable performance in demanding industrial environments while maintaining low phase noise characteristics essential for high-speed digital communication systems.

Feature Summary

• Provides stable oscillation at 55.2 MHz with high frequency accuracy
• Utilizes surface-mount technology for compact circuit board integration
• Ensures consistent performance across wide industrial temperature ranges
• Delivers precise timing signals with minimal frequency drift

Applications

• High-speed data communication interfaces requiring precise clock synchronization
• Microcontroller and microprocessor system clock sources
• Digital signal processing equipment needing stable frequency references
• Industrial control systems operating in variable thermal conditions

Procurement Notes

Verify the specific suffix MDHB-T against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure compatibility with your PCB footprint design regarding the 4-SMD no-lead package dimensions. Cross-reference the operating temperature range requirements with your application environment to guarantee reliability under all expected thermal conditions during procurement.

Selection Notes

Select this component when a 55.2 MHz fundamental frequency is required with ±20 ppm stability. Consider the 18 pF load capacitance requirement for proper circuit matching. Evaluate the -40°C to +85°C range against your environmental constraints. Compare against alternative frequencies if system architecture allows flexibility, ensuring the selected part meets all electrical and mechanical interface standards for your specific design.

Part Context

This crystal belongs to QST's QT325S series of surface-mount resonators. The series is engineered for applications demanding high stability and small form factors. Components in this line typically offer robust performance in consumer electronics and industrial automation. The specific model variant defines the unique frequency and tolerance parameters within this broader product family.

Replacement Considerations

Check for direct substitutes with identical 55.2 MHz frequency and 18 pF load capacitance. Verify that any replacement maintains the same ±20 ppm tolerance and -40°C to +85°C operating range. Ensure the physical package dimensions match the existing PCB layout to avoid rework.