QT161S-26.000METI-T

Overview

The QT161S-26.000METI-T is a surface-mount quartz crystal oscillator manufactured by TXC Corporation under the QST brand. It operates at a fundamental frequency of 26 MHz with a frequency tolerance of ±10 ppm at 25°C and stability of ±10 ppm over an operating temperature range of -30°C to 85°C. The component features a load capacitance of 16 pF and an equivalent series resistance (ESR) of 100 Ohms. It utilizes a 4-pin CSMD package with dimensions of 1.6 x 1.2 mm, designed for seam seal construction.

Feature Summary

• Seam seal ceramic construction for enhanced environmental durability
• Fundamental mode operation ensuring stable frequency generation
• Compact 4-pin surface mount design optimized for space-constrained PCB layouts

Applications

• Microcontroller clock sources requiring precise timing
• Communication modules operating within industrial temperature ranges
• Consumer electronics utilizing standard 26 MHz reference frequencies

Procurement Notes

Verify manufacturer designation as TXC Corporation when sourcing QST branded components. Confirm specific suffix METI corresponds to the 16pF load capacitance and -30 to 85C temperature range specifications. Ensure compatibility with reflow soldering profiles suitable for 4-SMD no lead packages. Cross-reference datasheet revisions to confirm current manufacturing status and parameter consistency.

Selection Notes

Select this component when a 26 MHz fundamental frequency is required with ±10 ppm stability across industrial temperatures. The 16pF load capacitance must match the host circuit's oscillator requirements. Consider the 1.6x1.2mm footprint for density constraints. Verify ESR limits against driver circuit capabilities to ensure reliable oscillation startup.

Part Context

This part belongs to the QT161S series of miniature quartz crystals. The series offers various frequency options and load capacitance values. The QT161S-26.000METI-T specifically addresses applications needing 26 MHz performance with industrial grade thermal stability. It complements other variants in the family differing only in frequency or capacitance parameters.

Replacement Considerations

Direct substitutes include QT161S-26.000MEEQ-T for commercial temperature range applications. Variants like QT161S-26.000MAAB-T offer different load capacitances and tolerances. Ensure replacement parts maintain identical package dimensions and pin configurations for board compatibility.