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Product Detailed Parameters
- Description：XTAL OSC XO 125.0000MHZ CMOS SMD
- Series：QTM750
- Mfr：QST
- Package：Tape & Reel (TR)
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Overview
The QTM750-125.000MBE-T is a standard CMOS crystal oscillator manufactured by QST, designed for surface-mount applications. It operates at a frequency of 125 MHz with a supply voltage of 3.3 VDC. The device features a ±50 ppm frequency stability over an extended temperature range of -40°C to +85°C. It utilizes a 4-SMD, No Lead package with dimensions of 7.0 mm x 5.0 mm x 1.3 mm. The component includes enable/disable functionality and is housed in a ceramic package suitable for high-reliability electronic circuits.
Feature Summary
- CMOS output signal generation for digital clocking
- Integrated enable and disable control capability
- Extended industrial temperature operation range
- Surface-mount ceramic package construction
Applications
- High-speed data communication interfaces
- Network equipment clocking systems
- Industrial control cabinet timing references
- Motor control system synchronization
Procurement Notes
Verify the manufacturer designation as QST rather than TXC Corporation, which appears in some distributor listings. Confirm the specific suffix MBE-T corresponds to the 3.3V CMOS variant with enable functionality. Ensure the order quantity aligns with factory packaging requirements, typically involving minimum order multiples. Cross-reference the part number against official QST documentation to avoid confusion with similar family members.
Selection Notes
Select this component when a precise 125 MHz reference is required for CMOS-compatible logic circuits. The 3.3V supply requirement dictates compatibility with modern low-voltage digital systems. The ±50 ppm stability is sufficient for most synchronous digital protocols. Consider the 7x5mm footprint for PCB layout constraints and ensure thermal management supports the -40 to +85°C operational range.
Part Context
This oscillator belongs to the QTM750 series of standard quartz oscillators from QST. The series offers various frequencies within the same physical footprint, allowing for design flexibility. The 125 MHz variant is commonly used in telecommunications and high-performance computing applications where stable clocking is critical for data integrity and system synchronization.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material. Users should consult QST's official cross-reference guides or contact the manufacturer directly for verified equivalents. Ensure any replacement matches the 4-SMD no-lead package and 3.3V CMOS specifications.
