QTM325-12.000MBE-T

Overview

The QTM325-12.000MBE-T is a surface-mount crystal oscillator manufactured by QST, designed for precision timing applications. It operates at a nominal frequency of 12 MHz with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 100 ohms. The device features a frequency stability of ±30 ppm at 25°C and supports a wide operating temperature range from -40°C to +85°C. Housed in a compact 4-SMD, no-lead package measuring 3.20mm x 2.50mm with a maximum height of 0.90mm, it utilizes fundamental mode operation. This component is currently active and available in tape and reel or cut tape packaging formats.

Feature Summary

• Provides stable oscillation within a wide industrial temperature range
• Compact surface-mount footprint suitable for space-constrained designs
• Fundamental mode operation ensures precise frequency control

Applications

• General-purpose digital clock signal generation
• Microcontroller system timing references
• Communication interface synchronization circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure compatibility with required frequency tolerance and temperature specifications. Confirm that the selected packaging format aligns with automated assembly requirements. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a 12 MHz reference signal is required with ±30 ppm stability across industrial temperatures. Ensure the circuit design accommodates the specified 12 pF load capacitance and 100 ohm ESR characteristics. Verify that the 3.2x2.5 mm package dimensions fit within the designated PCB land pattern constraints.

Part Context

This oscillator belongs to the QTM325 series, which offers various frequency options in a standardized small outline package. The series provides alternatives for different clock speeds while maintaining consistent physical dimensions and electrical interface standards. It serves as a direct replacement for legacy components requiring similar form-factor and performance profiles in embedded systems.

Replacement Considerations

Consult official substitution lists for verified equivalents. Generic cross-references may not match the specific 12 pF load capacitance or 100 ohm ESR requirements. Validate any substitute against the original datasheet parameters to ensure functional compatibility.