QT216S-27.000MAAE-T

Overview

The QT216S-27.000MAAE-T is a quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 27 MHz with a frequency stability of ±30 ppm at 25°C and over the temperature range of -20°C to +70°C. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 90 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for surface-mount assembly in space-constrained electronic designs.

Feature Summary

• Compact 2.0x1.6 mm surface-mount footprint for space-efficient PCB layouts
• High frequency stability of ±30 ppm ensures reliable clock signals
• Low equivalent series resistance of 90 Ohms for efficient oscillation
• RoHS compliant construction for environmental safety

Applications

• Precision timing circuits in consumer electronics
• Clock generation for microcontrollers and digital signal processors
• Communication modules requiring stable carrier frequencies
• Wearable devices with strict size constraints

Procurement Notes

Verify the specific suffix 'AAE' against the manufacturer's official datasheet to confirm temperature range and tolerance specifications. Ensure the ordering part number matches the required load capacitance and ESR values for your oscillator circuit design. Confirm RoHS compliance status through the supplier's declaration of conformity documents prior to procurement.

Selection Notes

Select this component when a 27 MHz reference frequency is required with ±30 ppm stability. The 12 pF load capacitance must match the oscillator circuit's external capacitors. Consider the 90 Ohm ESR limit to ensure sufficient drive level without damaging the crystal. The 4-SMD package requires appropriate reflow soldering profiles compatible with small outline components.

Part Context

This part belongs to QST's QT216S series of miniature quartz crystals. The series offers various frequencies and packages optimized for modern electronics. The 27 MHz variant is commonly used in RF and baseband applications where moderate stability suffices. The SMD form factor supports automated pick-and-place manufacturing processes.

Replacement Considerations

Direct substitutes must match the 27 MHz frequency, 12 pF load capacitance, 90 Ohm ESR, and 2.0x1.6 mm package dimensions. Verify that alternative manufacturers offer identical ±30 ppm stability across the same temperature range. Cross-reference pinout compatibility if using non-standard footprints.