QT532G-50.000MAAJ-T

Overview

The QT532G-50.000MAAJ-T is a surface-mount quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 50 MHz. It features a compact 5.0x3.2 mm package with a height of 1.2 mm. The component exhibits a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. Frequency tolerance and stability are both specified at ±30 ppm at 25°C and across the -20°C to +70°C temperature range. The device utilizes a glass seal construction and is RoHS compliant.

Feature Summary

• Fundamental mode quartz crystal operation for precise timing applications
• Compact surface-mount design suitable for space-constrained PCB layouts
• Glass-sealed construction ensuring environmental durability

Applications

• Clock generation for microprocessors and microcontrollers
• Timing references in communication modules
• Synchronization circuits in consumer electronics

Procurement Notes

Verify the specific suffix 'MAAJ' against the manufacturer's current datasheet to confirm pin configuration and termination style. Ensure the required load capacitance matches the circuit design specifications. Confirm RoHS compliance status if restricted substances are a project constraint. Cross-reference the ESR value with oscillator driver strength requirements to prevent over-driving.

Selection Notes

Select this component when a 50 MHz fundamental frequency is required with moderate stability needs. The 50 Ohm ESR suits standard oscillator circuits without excessive drive level sensitivity. The 18 pF load capacitance is common for many digital logic families. Consider the ±30 ppm stability if tighter control is needed, alternative parts may be required.

Part Context

This part belongs to the QT532G series of SMD crystals from QST. The series offers various frequencies within the 5.0x3.2 mm footprint. The 'G' typically denotes glass seal technology. Competing series often include HC-49 or smaller SMD variants like 3225 packages. This specific model targets general-purpose clocking where size and cost efficiency are balanced with standard stability.

Replacement Considerations

Direct substitutes must match the 50 MHz frequency, 18 pF load capacitance, and 50 Ohm ESR. Package dimensions 5.0x3.2x1.2 mm must be compatible. Check if other manufacturers offer equivalent performance in the same footprint. Verify that any replacement maintains the same frequency tolerance and stability ratings.