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Product Detailed Parameters
- Description：XTAL 10ppm 20ppm 10pF
- Series：QT121S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：48 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：0.047" L x 0.041" W (1.20mm x 1.05mm)
- Height - Seated (Max)：0.013" (0.33mm)
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Overview
The QT121S-48.000MEIQ-T is a surface-mount crystal resonator manufactured by QST Products, LLC. It operates at a fundamental frequency of 48 MHz with a load capacitance of 8 pF. The component features an SMD package without leads, designed for automated assembly processes. Frequency stability is specified at ±30 ppm, ensuring reliable timing performance in electronic circuits requiring precise clock signals.
Feature Summary
- Surface-mount design suitable for automated pick-and-place manufacturing
- Fundamental mode operation providing stable oscillation frequencies
- Compact leadless package format optimizing PCB space utilization
Applications
- Microcontroller clock sources
- Communication interface timing
- Digital signal processing systems
Procurement Notes
Verify the specific suffix 'IQ' against official QST documentation to confirm exact electrical characteristics and packaging specifications. Ensure compatibility with reflow soldering profiles defined in the manufacturer's datasheet. Cross-reference part numbers with authorized distributors to avoid counterfeit components.
Selection Notes
Select this component when a 48 MHz fundamental frequency with 8 pF load capacitance is required. Consider the ±30 ppm stability requirement relative to system timing tolerances. Evaluate the leadless SMD form factor against available board space constraints and thermal management requirements.
Part Context
This part belongs to QST's line of surface-mount crystals. It complements other models like the QT121S-40.000MEEV-T which offers different frequency options within the same series. The product family focuses on providing reliable timing solutions for consumer and industrial electronics applications.
Replacement Considerations
Direct substitutes may include variants from the same QST series with matching frequency and package dimensions. Verify equivalent load capacitance and stability ratings before substitution. Consult manufacturer cross-reference guides for approved alternative part numbers.
