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Product Detailed Parameters
- Description：2.0X1.6 GLASS SEAL MHZ QUARTZ XT
- Series：QT216G
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：27 MHz
- Frequency Stability：±20ppm
- Frequency Tolerance：±10ppm
- Load Capacitance：-
- ESR (Equivalent Series Resistance)：150 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-20°C ~ 70°C
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.081" L x 0.065" W (2.05mm x 1.65mm)
- Height - Seated (Max)：0.024" (0.60mm)
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Overview
The QT216G-27.000MEDJ-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 27 MHz. It features a surface-mount package with dimensions of 2.0 x 1.6 x 0.6 mm. The component exhibits a load capacitance of 18 pF and provides frequency stability of ±10 ppm at 25°C and ±20 ppm across the -20°C to +70°C temperature range.
Feature Summary
- Utilizes glass seal technology for enhanced environmental durability
- Designed for high-frequency stability in compact surface-mount applications
- Operates in fundamental mode for precise timing control
Applications
- Microcontroller clock sources
- RF communication modules
- Consumer electronics timing circuits
Procurement Notes
Verify the specific suffix MEDJ-T against official QST documentation to confirm the 18pF load capacitance and ±10ppm/±20ppm tolerance specifications. Ensure the requested variant matches the 2.0x1.6mm package dimensions and glass seal construction before procurement to avoid functional mismatches in precision timing designs.
Selection Notes
Select this component when a 27 MHz fundamental frequency is required with tight initial tolerance. The 18pF load capacitance must match the oscillator circuit design. Consider the -20°C to +70°C industrial temperature range requirements and the physical constraints of the 2.0x1.6mm SMD footprint during PCB layout planning.
Part Context
This part belongs to the QT216G series of quartz crystals from QST, characterized by small form factors suitable for portable devices. The series offers various frequency and tolerance options within the same mechanical envelope, allowing designers to standardize board layouts while adjusting electrical performance parameters.
Replacement Considerations
Direct substitutes include other manufacturers' 27 MHz crystals in 2.0x1.6mm packages with 18pF load capacitance and similar stability ratings. Verify equivalent temperature coefficients and drive level specifications to ensure compatibility with existing oscillator circuits.
