QT216S-30.000MAHQ-T

Overview

The QT216S-30.000MAHQ-T is a surface-mount quartz crystal oscillator manufactured by QST, designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 30 MHz with a frequency stability and tolerance of ±30ppm at 25°C and across the industrial temperature range of -40°C to +85°C. The component features a load capacitance of 10pF and an equivalent series resistance (ESR) of 50 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, utilizing seam seal technology for reliable performance.

Feature Summary

• Seam seal construction for enhanced environmental protection
• Compact 4-SMD no-lead surface mount footprint
• Industrial temperature range operation capability

Applications

• Microcontroller clock inputs
• Communication equipment timing references
• Consumer electronics oscillators

Procurement Notes

Verify the specific suffix HQ against the manufacturer's official datasheet to confirm the exact load capacitance and ESR values, as suffixes often denote critical electrical parameter variations. Ensure the requested part matches the required frequency stability specifications for the target application environment. Cross-reference the package dimensions with the design board layout to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when a 30 MHz reference signal is required within a constrained space. The 10pF load capacitance must align with the host circuit's input requirements to ensure accurate frequency oscillation. Consider the ±30ppm stability limit relative to the system's timing accuracy needs. The 50 Ohm ESR should be compatible with the oscillator circuit's drive level constraints to prevent over-driving the crystal.

Part Context

This part belongs to the QT216S family of surface-mount crystals from QST. The family offers various frequencies and package sizes, with the QT216S specifically denoting the 2.0x1.6mm form factor. The HQ suffix typically indicates specific electrical characteristics such as load capacitance and temperature stability ranges defined by the manufacturer for this series.

Replacement Considerations

Direct substitutes include other 30MHz SMD crystals with identical 4-SMD no-lead packages and matching 10pF load capacitance. Verify that alternative manufacturers offer comparable ±30ppm stability and 50 Ohm ESR. Check for pin-compatible footprints if swapping between different suppliers' versions of the same package type.