QT532G-12.000MBBK-T

Overview

The QST QT532G-12.000MBBK-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 12 MHz. It features a 2-SMD, No Lead package with dimensions of 5.0mm x 3.2mm and a maximum height of 1.2mm. The component exhibits a frequency stability of ±50 ppm at 25°C and a frequency tolerance of ±30 ppm. It utilizes a load capacitance of 20 pF and has an equivalent series resistance (ESR) of 80 Ohms. The device supports base harmonic operation mode and functions within a temperature range of -20°C to +70°C.

Feature Summary

• Compact 2-SMD surface mount footprint suitable for space-constrained PCB layouts
• Fundamental mode operation ensures stable oscillation at 12 MHz
• Compliant with RoHS3 environmental standards

Applications

• General-purpose clock signal generation in embedded systems
• Microcontroller and microprocessor timing references
• Communication module oscillator circuits

Procurement Notes

Verify the specific suffix 'MAHJ' versus 'MBBK' when sourcing, as these indicate different stability and tolerance specifications. Confirm the manufacturer is QST Products LLC, not TXC, despite occasional listing errors. Ensure the selected variant matches the required load capacitance and ESR for the target circuit design before finalizing procurement orders.

Selection Notes

Select this component when a 12 MHz fundamental frequency is required with moderate stability requirements. The 20 pF load capacitance must match the oscillator circuit's external capacitor values. Consider the ±50 ppm stability limit against system timing accuracy needs. The small 5.0x3.2 mm package is ideal for high-density surface mount applications where larger HC-49 packages do not fit.

Part Context

This part belongs to the QT532G series of quartz crystals manufactured by QST. The series offers various frequencies and package sizes optimized for consumer electronics and industrial control applications. The 12 MHz variant provides a standard reference clock for digital logic circuits requiring precise timekeeping or data synchronization.

Replacement Considerations

The QT532G-12.000MAHJ-T is a parameter-equivalent alternative from QST with higher stability (±30 ppm). For cross-manufacturer replacement, verify that substitute crystals maintain identical load capacitance (20 pF) and ESR (80 Ohms) to ensure circuit compatibility.