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Product Detailed Parameters
- Description：2.5X2.0 QUARTZ CLIPPED SINE TCXO
- Series：QTT252
- Mfr：QST
- Package：Tape & Reel (TR)
- Base Resonator：Crystal
- Type：TCXO
- Frequency：26 MHz
- Function：-
- Output：Clipped Sine Wave
- Voltage - Supply：3.3V
- Frequency Stability：±500ppb
- Absolute Pull Range (APR)：-
- Operating Temperature：-30°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：2mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.098" L x 0.079" W (2.50mm x 2.00mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The QTT252-26.000MBG-T is a 26 MHz TCXO oscillator from the QTT252 series, manufactured by TXC Corporation (QST). It features a clipped sine wave output in a 4-SMD, no lead ceramic package measuring 2.5x2.0 mm. The device operates at 3.3V with an enable/disable control function. Frequency stability is specified at +/-2.0 ppm over the -30°C to +85°C temperature range. The part utilizes quartz crystal technology for high precision timing applications.
Feature Summary
- Integrated temperature compensation ensures frequency stability across industrial temperature ranges
- Compact 2.5x2.0 mm ceramic surface mount package suitable for space-constrained designs
- Supports enable/disable functionality for power management optimization
Applications
- Bluetooth modules requiring precise clock synchronization
- GPS navigation systems needing stable frequency references
- Wearable electronic devices with limited board space
- IoT sensors demanding low power consumption and accuracy
Procurement Notes
Verify the manufacturer designation carefully, as listings may attribute this component to either TXC Corporation or QST Products due to brand relationships. Confirm the specific suffix MBG-T matches the required enable/disable feature and clipped sine wave output format. Ensure the operating voltage aligns with the 3.3V specification before integration into the circuit design.
Selection Notes
Select this model when a small form factor is critical alongside high frequency stability. The 26 MHz frequency is standard for wireless communication interfaces. Consider the clipped sine wave output compatibility with downstream logic circuits. The enable pin allows for dynamic power control, which is advantageous for battery-operated portable electronics requiring extended standby times.
Part Context
This component belongs to the QTT252 series of temperature-compensated crystal oscillators. The series offers various frequencies and stability grades within a standardized 2520 footprint. It serves as a compact alternative to larger through-hole or standard SMD oscillators, addressing the trend toward miniaturization in modern consumer electronics and mobile communication hardware.
Replacement Considerations
Direct substitutes include other QTT252 series variants with different frequencies such as QTT252-19.200MBN-T or QTT252-32.000MBN-T, provided the frequency difference is acceptable. Cross-reference with similar 2520 TCXOs from other manufacturers if supply constraints exist, ensuring pinout and electrical specifications match.
