QT121S-32.000MEEQ-T

Overview

The QT121S-32.000MEEQ-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 32.000 MHz. It features a frequency tolerance of ±30 ppm and a load capacitance of 8 pF. The component utilizes a four-terminal surface-mount (SMD) package with no lead construction, measuring approximately 2.5 mm in length and 2.0 mm in width. Designed for reliability, it operates within a temperature range of -40°C to +85°C and exhibits an equivalent series resistance (ESR) of 60 ohms maximum.

Feature Summary

• Four-terminal SMD configuration for enhanced stability
• Glass-sealed hermetic package design
• Low profile surface-mount construction

Applications

• Microcontroller clock sources
• Communication module timing
• Consumer electronics oscillators

Procurement Notes

Verify the specific ordering suffix against official QST documentation to ensure correct frequency and tolerance specifications. Confirm that the four-terminal package variant matches the required footprint for PCB layout. Cross-reference the datasheet revision date to validate environmental compliance and operational parameters before finalizing procurement orders.

Selection Notes

Select this component when a stable 32 MHz reference is required for compact designs. The four-terminal structure offers superior vibration resistance compared to two-terminal alternatives. Ensure the circuit design supports the specified 8 pF load capacitance to maintain accurate frequency performance across the designated industrial temperature range.

Part Context

This part belongs to QST's line of precision quartz crystals, which are widely used in timing applications. The QT121S series specifically targets space-constrained electronic devices requiring reliable frequency generation. As a specialized supplier, QST focuses on providing robust timing solutions for various industrial and consumer markets.

Replacement Considerations

Direct substitutes include other 32 MHz crystals with identical 4-SMD no-lead footprints and similar electrical characteristics. Verify compatibility regarding load capacitance and ESR values when considering alternative manufacturers or different series from the same vendor.