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Product Detailed Parameters
- Description：1.2x1.0mm XTAL 30ppm 30ppm 7pF
- Series：-
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：-
- Frequency：-
- Frequency Stability：-
- Frequency Tolerance：-
- Load Capacitance：-
- ESR (Equivalent Series Resistance)：-
- Operating Mode：-
- Operating Temperature：-
- Ratings：-
- Mounting Type：-
- Package / Case：-
- Size / Dimension：-
- Height - Seated (Max)：-
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Overview
The QT121S-38.400MAAY-T is a 38.4 MHz fundamental mode quartz crystal resonator manufactured by QST Corporation. This component operates with a frequency tolerance of ±30 ppm and features a load capacitance specification of 8 pF. It is housed in a compact 4-SMD, No Lead surface-mount package designed for automated assembly processes. The device utilizes standard AT-cut quartz technology to provide stable timing signals for electronic circuits requiring precise clock references.
Feature Summary
- Fundamental mode quartz crystal operation for stable frequency generation
- Surface-mount design compatible with automated pick-and-place assembly
- Standardized load capacitance configuration for circuit integration
Applications
- Microcontroller clock sources
- Communication interface timing
- Digital signal processing systems
Procurement Notes
Verify the specific ordering suffix MAAY-T against official QST documentation to confirm exact frequency tolerance and load capacitance specifications. Ensure that the 4-SMD no-lead package dimensions match the target PCB footprint requirements. Cross-reference the manufacturer's latest datasheet to validate compliance with RoHS standards and recommended soldering profiles for lead-free assembly processes.
Selection Notes
Select this component when a 38.4 MHz reference signal is required with moderate stability. The 8 pF load capacitance must align with the oscillator circuit design parameters. Consider the ±30 ppm tolerance relative to system timing budget constraints. Evaluate the surface-mount form factor against available board space and thermal management requirements during the initial hardware design phase.
Part Context
This part belongs to QST Corporation's line of timing devices, which includes crystals and oscillators. QST specializes in sensor and timing solutions headquartered in California. The QT121S series represents their standard surface-mount crystal offerings, providing reliable frequency control for consumer and industrial electronics applications requiring compact timing components.
Replacement Considerations
Consult official QST substitution guides for direct equivalents. Verify pin compatibility and electrical parameters before replacing with generic alternatives.
