QT532G-27.120MAHJ-T

Overview

The QT532G-27.120MAHJ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 27.12 MHz with a frequency tolerance and stability of ±30 ppm. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. It utilizes a 2-SMD, No Lead package configuration with physical dimensions of 5.0 x 3.2 x 1.2 mm. The device supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Surface-mount quartz crystal resonator with no lead design
• High frequency stability of ±30 ppm
• Optimized for low equivalent series resistance
• Wide industrial operating temperature range

Applications

• Clock generation circuits
• Microcontroller oscillator interfaces
• Communication module timing references
• Embedded system clock sources

Procurement Notes

Verify the specific part number QT532G-27.120MAHJ-T against official QST documentation to confirm electrical parameters and mechanical footprint. Ensure that the required load capacitance matches the circuit design specifications. Check for any specific handling or storage requirements related to surface-mount crystal components before integration into the final assembly process.

Selection Notes

Select this component when a precise 27.12 MHz reference is required in a compact surface-mount form factor. Consider the ±30 ppm tolerance and 18 pF load capacitance requirements of the host oscillator circuit. Evaluate the 50 Ohm ESR against the driving capability of the target microcontroller or logic gate to ensure reliable oscillation start-up and sustained operation under specified environmental conditions.

Part Context

This component belongs to the QT532G series of quartz crystals from QST, which are characterized by their small 5.0x3.2mm SMD footprint. The series offers various frequency options tailored for digital timing applications. The 'MAHJ' suffix typically denotes specific packaging and termination characteristics within the QST product line, ensuring compatibility with standard automated pick-and-place manufacturing processes.

Replacement Considerations

Direct substitutes must match the 27.12 MHz frequency, ±30 ppm tolerance, 18 pF load capacitance, and 50 Ohm ESR. Verify that alternative manufacturers offer identical 2-SMD, No Lead packages with compatible thermal profiles. Cross-reference pinout and mechanical dimensions to ensure board-level compatibility without redesigning the PCB footprint.

FAQ

What is the load capacitance specification for this crystal?

The QT532G-27.120MAHJ-T has a specified load capacitance of 18 pF.

Does this component support industrial temperature ranges?

Yes, the operating temperature range extends from -40°C to +85°C.