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Product Detailed Parameters
- Description：2.5X2.0 LOW EMI CMOS QUARTZ OSCI
- Series：QTM252E
- Mfr：QST
- Package：Tape & Reel (TR)
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：40 MHz
- Function：Enable/Disable
- Output：CMOS (Low EMI)
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 125°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：10mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.098" L x 0.079" W (2.50mm x 2.00mm)
- Height - Seated (Max)：0.035" (0.90mm)
- Supplier Device Package：-
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Overview
The QTM252E-40.000MDM-T is a surface-mount crystal oscillator manufactured by QST Products LLC. It operates at a frequency of 40 MHz with a CMOS output type and low electromagnetic interference characteristics. The device functions on a 1.8V supply voltage and features an enable/disable control pin. It is housed in a 4-SMD, no-lead package measuring 2.50mm x 2.00mm with a maximum seated height of 0.90mm. The unit supports a frequency stability of ±50ppm and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Low electromagnetic interference (EMI) performance for signal integrity
- Integrated enable/disable functionality via Pin 1 logic control
- Wide operating temperature range suitable for industrial environments
Applications
- Embedded communication systems requiring stable clock signals
- Industrial electronics operating in extreme temperatures
- Consumer electronics utilizing surface-mount technology
Procurement Notes
Verify the specific ordering suffix against official QST documentation to ensure correct frequency, tolerance, and package configuration. Confirm RoHS3 compliance status through authorized distributors. Cross-reference the manufacturer part number with datasheet specifications to avoid substitution errors regarding voltage levels or output types.
Selection Notes
Select this component when a 40 MHz CMOS clock source is required in a compact 2.5x2.0mm footprint. Ensure the design accommodates the 1.8V supply requirement and utilizes Pin 1 for enable/disable control if necessary. Verify that the ±50ppm stability meets system timing requirements across the full -40°C to +125°C operating range.
Part Context
This oscillator belongs to the QTM252E series from QST, designed for high-reliability applications. The series offers various frequencies and packages, with this specific model providing 40 MHz operation. It is commonly used in digital circuits where precise timing and low noise are critical for data transmission and processing tasks.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult QST official resources for direct replacements or compatible alternatives meeting identical electrical and mechanical specifications.
