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Product Detailed Parameters
- Description：3.2X2.5 30PPM @25C 30PPM (-40 TO
- Series：QT325G
- Mfr：QST
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MHz Crystal
- Frequency：16 MHz
- Frequency Stability：±30ppm
- Frequency Tolerance：±30ppm
- Load Capacitance：12pF
- ESR (Equivalent Series Resistance)：60 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-40°C ~ 85°C
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.126" L x 0.098" W (3.20mm x 2.50mm)
- Height - Seated (Max)：0.035" (0.90mm)
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Overview
The QT325G-16.000MAHE-T is a 16 MHz quartz crystal oscillator manufactured by QST, designed for surface-mount applications. It operates within a temperature range of -40°C to +85°C and features a load capacitance of 12 pF. The component exhibits a frequency tolerance of ±30 ppm at both 25°C and across the full operating temperature range. With an equivalent series resistance (ESR) of 60 Ohms, it utilizes a glass-sealed package measuring 3.2 x 2.5 x 0.8 mm in a four-terminal SMD configuration.
Feature Summary
- Glass-sealed quartz construction ensuring long-term stability
- Compact 3.2x2.5mm surface-mount footprint
- Wide industrial temperature operation capability
Applications
- Microcontroller clock sources
- Communication module timing circuits
- Industrial control system oscillators
Procurement Notes
Verify the manufacturer designation as QST against official datasheets, as some distributors may list similar part numbers under different branding. Confirm the specific suffix 'MAHE' corresponds to the glass-seal variant and 60 Ohm ESR specifications. Ensure the requested quantity matches available cut-tape or reel packaging options provided by authorized suppliers.
Selection Notes
Select this component when a compact, glass-sealed crystal with strict ±30 ppm stability over the industrial temperature range is required. The 12 pF load capacitance must match the host circuit's design requirements. Consider the 60 Ohm ESR value for impedance matching in low-power applications compared to higher ESR alternatives.
Part Context
This part belongs to the QT325G series of MHz quartz crystals from QST. It shares the 3.2x2.5mm form factor with other variants in the line but is distinguished by its specific 16 MHz frequency, glass-seal technology, and defined electrical parameters for reliable high-frequency performance.
Replacement Considerations
Direct substitutes include the AA-16.000MALE-T from TXC Corporation, which offers similar 16 MHz performance but differs in package dimensions (5x3.2mm) and ESR (100 Ohms). Verify mechanical fit and electrical compatibility before swapping.
