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Product Detailed Parameters
- Description：2.0X1.6 SEAM SEAL MHZ QUARTZ XTA
- Series：QT216S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：40 MHz
- Frequency Stability：±20ppm
- Frequency Tolerance：±10ppm
- Load Capacitance：8pF
- ESR (Equivalent Series Resistance)：50 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-40°C ~ 85°C
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.020" (0.50mm)
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Overview
The QT216S-40.000MEIV-T is a fundamental-mode quartz crystal resonator manufactured by QST. It operates at a nominal frequency of 40 MHz with a load capacitance of 8 pF. The component features a ±10 ppm frequency tolerance at 25°C and a stability of ±20 ppm across the industrial temperature range of -40°C to +85°C. It utilizes a 2.0 x 1.6 mm surface-mount package with no lead construction, designed for space-constrained electronic applications requiring precise timing.
Feature Summary
- Fundamental-mode quartz crystal operation ensuring stable frequency generation
- Compact 2.0 x 1.6 mm surface-mount package suitable for dense PCB layouts
- Industrial temperature range stability from -40°C to +85°C
- Seam seal construction providing environmental protection
Applications
- Microcontroller clock sources
- Communication module timing
- Portable consumer electronics
- Industrial control systems
Procurement Notes
Verify the specific ordering suffix MEIV-T against the manufacturer's current datasheet to confirm package type and termination style. Ensure the load capacitance requirement matches the host circuit design. Confirm that the temperature range specifications align with the operational environment requirements before finalizing procurement orders.
Selection Notes
Select this component when a 40 MHz reference is required in a minimal footprint. Consider the ±10 ppm initial tolerance and ±20 ppm total stability limits relative to system accuracy needs. Evaluate the 8 pF load capacitance compatibility with the oscillator circuit. Compare against alternative packages if mechanical constraints differ.
Part Context
This part belongs to the QT216S series of surface-mount crystals from QST. The series offers various frequencies and package sizes optimized for modern electronics. The QT216S variant specifically targets applications demanding high reliability in small form factors. Other variants in the family may differ in frequency, tolerance, or physical dimensions.
Replacement Considerations
Direct substitutes include other 40 MHz crystals with identical 2.0x1.6mm dimensions and 8pF load capacitance. Verify equivalent stability ratings (-40 to 85°C) and tolerance (±10 ppm). Cross-reference pinout and mounting pad layouts to ensure mechanical compatibility without redesigning the PCB.
FAQ
What is the load capacitance for this crystal?
The QT216S-40.000MEIV-T has a specified load capacitance of 8 pF.
Does this component support automotive temperature ranges?
No, the documented specification covers an industrial temperature range of -40°C to +85°C, not the extended automotive range.
What is the frequency stability over temperature?
The frequency stability is ±20 ppm over the operating temperature range of -40°C to +85°C.
