QT216S-38.400MAHE-T

Overview

The QT216S-38.400MAHE-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 38.4MHz with a standard load capacitance of 12pF. The component exhibits a frequency tolerance and stability of ±30ppm at 25°C, ensuring reliable clock signal generation. Its equivalent series resistance (ESR) is specified at 50Ω, supporting efficient circuit integration. The device is housed in a compact 2.0mm x 1.6mm SMD package, suitable for space-constrained designs. It supports an operating temperature range from -40°C to +85°C, providing robust performance across industrial environments.

Feature Summary

• Seam-sealed MHZ quartz construction for enhanced environmental durability
• Compact 2.0x1.6mm surface-mount footprint for automated assembly
• Stable frequency output with ±30ppm tolerance and stability specifications

Applications

• Microcontroller clock sources
• Communication module timing references
• Industrial control system oscillators

Procurement Notes

Verify the specific suffix 'MAHE' against official QST documentation to confirm pin configuration and soldering compatibility. Ensure that the 12pF load capacitance matches the oscillator circuit design requirements. Confirm RoHS compliance status through the manufacturer's current datasheet before procurement. Validate the ESR value of 50Ω against the target application's drive level constraints to prevent over-driving the crystal.

Selection Notes

Select this component when a 38.4MHz reference is required in a minimal SMD form factor. The ±30ppm stability is suitable for general-purpose digital logic and communication interfaces. Consider the -40°C to +85°C temperature range for industrial or automotive-grade deployments. Compare ESR specifications against alternative crystals if low-power consumption is a critical design constraint.

Part Context

This part belongs to QST's QT216S series of seam-sealed quartz crystals. The series offers various frequencies within a standardized 2.0x1.6mm package. The 'MAHE' suffix typically denotes specific terminal plating and packaging variations. This model provides a balance between size reduction and frequency accuracy for modern electronic assemblies.

Replacement Considerations

Direct substitutes include other 38.4MHz crystals in 2016 packages with matching 12pF load capacitance and ±30ppm tolerance. Verify ESR values closely, as differences may affect start-up times. Check mechanical dimensions and solder pad layouts to ensure PCB compatibility without redesign.