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Product Detailed Parameters
- Description：3.2X2.5 SEAM SEAL MHZ QUARTZ XTA
- Series：QT325S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：12 MHz
- Frequency Stability：±30ppm
- Frequency Tolerance：±30ppm
- Load Capacitance：20pF
- ESR (Equivalent Series Resistance)：80 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)：0.031" (0.80mm)
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Overview
The QT325S-12.000MAHK-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 12 MHz with a load capacitance of 18 pF and an equivalent series resistance of 80 Ohms. The component utilizes a seam seal package construction, measuring 3.2 x 2.5 x 0.7 mm in dimensions. Frequency stability is specified at ±30 ppm across the operating temperature range of -40°C to +85°C, ensuring reliable timing performance for embedded systems.
Feature Summary
- Seam seal construction for enhanced environmental protection
- Compact surface-mount footprint for space-constrained designs
- Stable frequency performance over extended industrial temperatures
Applications
- Embedded communication modules
- Microcontroller clock sources
- Consumer electronics timing circuits
Procurement Notes
Verify the specific ordering suffix against official QST documentation to confirm package type and tolerance specifications. Ensure compatibility with reflow soldering profiles defined in the manufacturer's datasheet. Cross-reference the part number with authorized distributors to confirm current availability and authenticity before procurement.
Selection Notes
Select this component when a 12 MHz reference is required in a small SMD form factor. Consider the ±30 ppm stability requirement relative to system timing accuracy needs. Evaluate the 18 pF load capacitance against the oscillator circuit design parameters to ensure proper resonance conditions are met.
Part Context
This part belongs to the QT325S series of quartz crystals from QST, characterized by their small 3.2x2.5 mm package size. The series offers various frequency options and stability grades, catering to diverse electronic applications requiring precise timing signals in compact devices.
Replacement Considerations
Compatible substitutes include the QT325S-12.000MAHJ-T and QT325S-12.000MEEQ-T from QST, provided the load capacitance and stability requirements align with the application design.
FAQ
What is the package type of the QT325S-12.000MAHK-T?
It uses a seam seal package construction with a 4-SMD, no lead configuration.
What is the frequency stability specification?
The frequency stability is ±30 ppm over the operating temperature range of -40°C to +85°C.
