QT325G-12.000MAHV-T

Overview

The QT325G-12.000MAHV-T is a surface-mount quartz crystal manufactured by QST, designed for fundamental mode oscillation at a nominal frequency of 12 MHz. It features a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm and a maximum height of 0.8 mm. The component exhibits a load capacitance of 8 pF and an equivalent series resistance (ESR) of 150 Ohms. Frequency stability is maintained within ±30 ppm across the operating temperature range of -40°C to +85°C.

Feature Summary

• Fundamental mode operation ensures stable oscillation characteristics for precise timing applications.
• Compact 4-SMD no-lead package design facilitates automated surface-mount assembly processes.
• Industrial-grade thermal rating supports reliable performance in demanding environmental conditions.

Applications

• Microcontroller clock sources
• Communication module timing circuits
• Industrial control system oscillators

Procurement Notes

Verify that the specific suffix HV-T corresponds to the required load capacitance and packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications before finalizing procurement orders.

Selection Notes

Select this component when a 12 MHz fundamental frequency is required with an 8 pF load capacitance. Ensure the circuit design accommodates the 150 Ohm ESR value for proper startup margins. Verify that the 3.2x2.5 mm footprint matches the PCB layout constraints.

Part Context

This part belongs to the QT325G series of SMD crystals from QST. The series offers various frequency options and package sizes tailored for consumer electronics and industrial applications. The 12 MHz variant provides a standard reference clock speed widely used in digital logic systems.

Replacement Considerations

Direct substitutes include the AV-12.000MAHV-T from TXC Corporation, which shares similar electrical parameters but utilizes a different package size. Cross-reference pinout compatibility and mechanical tolerances before implementation.