QT325S-19.200MEEQ-T

Overview

The QT325S-19.200MEEQ-T is a surface-mount quartz crystal manufactured by TXC Corporation, marketed under the QST brand designation in certain distributor channels. It operates at a nominal frequency of 19.2 MHz with a base fundamental mode. The component features a load capacitance of 10 pF and offers high frequency stability of ±10 ppm at both 25°C and within the -20°C to +70°C operating range. It utilizes a 4-SMD, no-lead package with dimensions of 3.2mm x 2.5mm and a maximum height of 0.6mm. The device exhibits an equivalent series resistance (ESR) of 60 Ohms and complies with RoHS3 standards.

Feature Summary

• High accuracy frequency stability maintained across industrial temperature ranges
• Glass-sealed construction for enhanced environmental durability
• Compact surface-mount footprint suitable for space-constrained PCB layouts

Applications

• Clock generation for microcontrollers and digital signal processors
• Communication interface timing references
• Consumer electronics requiring precise clock synchronization

Procurement Notes

Verify manufacturer attribution carefully, as official documentation identifies TXC Corporation as the primary manufacturer while QST appears in specific distributor listings. Confirm package dimensions and ESR values against the latest datasheet before integration. Ensure compatibility with existing PCB footprints designed for 3.2x2.5mm SMD crystals. Check for updated RoHS compliance status if required by specific regional regulations.

Selection Notes

Select this component when a 19.2 MHz reference with tight ±10 ppm stability is required in a compact form factor. The 10 pF load capacitance must match the oscillator circuit design specifications. Consider the 60 Ohm ESR limit for oscillator startup reliability. Compare against alternative packages like 8Z or 8Y series if different dimensional constraints apply.

Part Context

This part belongs to the QT325S series of high-accuracy MHz quartz crystals. It represents a standard solution for applications needing reliable timing sources in small surface-mount packages. The series is widely used in portable devices and industrial control systems where size and precision are critical factors.

Replacement Considerations

The 8Z-19.200MEEQ-T is documented as a similar substitute option from TXC Corporation. Verify mechanical fit and electrical parameters before substitution.