QT325G-48.000MDHJ-T

Overview

The QT325G-48.000MDHJ-T is a quartz crystal resonator manufactured by QST Products, LLC. It operates at a fundamental frequency of 48 MHz with a load capacitance of 18 pF and an equivalent series resistance of 60 Ohms. The component is housed in a 4-SMD, No Lead package with dimensions of 3.2 x 2.5 mm. Frequency stability is rated at ±30 ppm over the operating temperature range of -40°C to +85°C.

Feature Summary

• Provides stable oscillation for digital clock signals
• Designed for surface-mount assembly processes
• Operates within extended industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix MDHJ-T against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure compatibility with the target circuit's load capacitance requirements before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when a 48 MHz reference is required for space-constrained designs utilizing the 3.2x2.5 mm footprint. Consider the ±30 ppm stability rating relative to system timing accuracy needs. Evaluate the -40°C to +85°C range against environmental conditions. Confirm that the 18 pF load capacitance matches the oscillator circuit design parameters.

Part Context

This model belongs to the QT325G series of thin-film bulk acoustic resonator (FBAR) or similar advanced quartz crystals from QST. The series is characterized by small form factors suitable for portable electronics. The specific designation indicates a 48 MHz variant optimized for general-purpose digital timing applications requiring moderate stability.

Replacement Considerations

Direct substitutes include other 48 MHz crystals in 3225 packages with matching 18 pF load capacitance and ±30 ppm stability. Verify pinout compatibility and mounting pad layout equivalence. Check if alternative manufacturers offer identical electrical characteristics and thermal performance profiles.