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Product Detailed Parameters
- Description：2.5x2.0 XTAL 10ppm 20ppm 10pF
- Series：QT252S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：25 MHz
- Frequency Stability：±20ppm
- Frequency Tolerance：±10ppm
- Load Capacitance：10pF
- ESR (Equivalent Series Resistance)：100 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-40°C ~ 85°C
- 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)：0.022" (0.55mm)
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Overview
The QT252S-25.000MEIQ-T is a quartz crystal oscillator manufactured by QST Products, LLC. It operates at a fundamental frequency of 25 MHz and utilizes a 4-SMD, No Lead package with dimensions of 2.5x2.0 mm. The component features a load capacitance of 10 pF and an equivalent series resistance (ESR) of 100 Ohms. Frequency stability is rated at ±10 ppm at 25°C and ±20 ppm over the operating temperature range of -40°C to +85°C.
Feature Summary
- Seam seal construction for enhanced environmental protection
- Low profile surface mount design suitable for space-constrained applications
- High frequency stability across industrial temperature ranges
Applications
- Microcontroller clock sources
- Communication module timing references
- Industrial control system oscillators
Procurement Notes
Verify manufacturer authorization through official QST channels or authorized distributors. Confirm RoHS3 compliance status as indicated in product documentation. Ensure storage conditions maintain component integrity prior to assembly. Cross-reference datasheet revisions to confirm parameter consistency.
Selection Notes
Select this component when a 25 MHz reference with ±10 ppm initial accuracy is required. Verify that the 10 pF load capacitance matches the host circuit requirements. Ensure the 4-SMD no-lead footprint aligns with PCB layout constraints. Consider thermal stability needs within the -40°C to +85°C operational window.
Part Context
This part belongs to the QT252S series of surface mount crystals from QST. The series offers various frequencies with similar form factors. Variants differ primarily in frequency, stability ratings, and temperature ranges while maintaining consistent package dimensions and electrical interface characteristics for design compatibility.
Replacement Considerations
Direct substitutes include other 25 MHz crystals with identical 2.5x2.0 mm footprints and 10 pF load capacitance. Verify ESR values and stability specifications match application requirements. Check for pinout compatibility despite the no-lead design.
