QTT325-26.000MBS-T

Overview

The QTT325-26.000MBS-T is a Voltage-Controlled Temperature Compensated Crystal Oscillator (VCTCXO) manufactured by QST Products, LLC. It operates at a nominal frequency of 26 MHz and delivers a clipped sine wave output signal. The component is designed for surface-mount installation within a compact 4-SMD, No Lead package measuring 3.20mm x 2.50mm. It functions on a 3.3V supply voltage with a maximum current consumption of 2mA. The device maintains operational stability across an extended temperature range from -30°C to +85°C.

Feature Summary

• Integrates voltage-controlled temperature compensation for enhanced frequency stability under thermal variations.
• Delivers a clipped sine wave output suitable for digital clocking applications.
• Utilizes a low-profile surface-mount package optimized for space-constrained PCB layouts.

Applications

• Wireless communication modules requiring stable RF carrier frequencies
• Portable electronic devices with limited power budgets
• Industrial control systems operating in variable thermal environments

Procurement Notes

Verify the manufacturer designation as QST Products, LLC, distinct from other vendors using similar part numbering conventions. Confirm the specific output waveform is clipped sine wave rather than square or CMOS. Ensure the supply voltage requirement matches the 3.3V specification and that the package dimensions align with the 3.20mm x 2.50mm footprint. Cross-reference the temperature range to ensure compatibility with the intended operational environment.

Selection Notes

Select this component when a VCTCXO is required for 26 MHz applications needing moderate stability without the complexity of external tuning circuits. Consider the 2mA current draw for battery-powered designs. Evaluate the 4-SMD package against available board space constraints. Compare performance against standard TCXOs if higher precision is needed, noting that VCTCXOs offer a balance between cost and stability.

Part Context

This oscillator belongs to the QTT325 series, which provides compact solutions for timing applications. The series supports various frequencies within the 10MHz to 52MHz range. The specific model utilizes a crystal resonator base. It is categorized under general-purpose oscillators for consumer and industrial electronics.

Replacement Considerations

The 7Q-26.000MBS-T from TXC Corporation is a documented substitute offering identical electrical specifications including 26 MHz frequency, 3.3V operation, and 4-SMD packaging. Verify pinout compatibility before substitution.