QT532G-25.000MAHJ-T

Overview

The QT532G-25.000MAHJ-T is a quartz crystal resonator manufactured by TXC Corporation, distributed under the QST brand. It operates at a fundamental frequency of 25 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. The component features a frequency tolerance and stability of ±30 ppm across the operating temperature range of -40°C to +85°C. It utilizes a glass-sealed ceramic package in a 2-SMD surface-mount configuration, measuring 5.0 mm x 3.2 mm x 1.2 mm.

Feature Summary

• Glass-sealed ceramic construction for enhanced environmental durability
• Fundamental mode operation at 25 MHz
• Surface-mount design compatible with automated assembly

Applications

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

Procurement Notes

Verify that the supplier explicitly identifies TXC Corporation as the manufacturer, as QST acts as a distributor. Confirm the specific package dimensions match the 5.0x3.2mm specification rather than the smaller 3.2x2.5mm variants found in other series. Ensure the datasheet confirms the 50 Ohm ESR value, as some listings may contain conflicting data regarding this parameter.

Selection Notes

Select this component when a 25 MHz reference is required with ±30 ppm stability over industrial temperatures. The 18 pF load capacitance must align with the host circuit's oscillator design. The glass-seal technology offers superior long-term stability compared to standard epoxy-sealed crystals. Verify the footprint matches the 2-SMD no-lead pad layout specified in the official documentation.

Part Context

This part belongs to the QT532G series of quartz crystals from TXC Corporation. The series is characterized by its glass-sealed ceramic packages, which provide robust performance in demanding environments. The model number indicates a 25 MHz frequency variant within this specific size and electrical specification family.

Replacement Considerations

Direct substitutes include other 25 MHz crystals with identical 18 pF load capacitance, ±30 ppm stability, and 5.0x3.2mm SMD footprints. Ensure any replacement maintains the 50 Ohm ESR requirement if critical for oscillator startup. Verify that alternative manufacturers offer comparable glass-seal technology for similar environmental resilience.