QT49S-12.000MAAJ-T

$0.29

Description：HC49 SMD MHZ QUARTZ XTAL / METAL
Series：QT49S
Mfr：QST
Package：Tape & Reel (TR)

SKU:3e90627bfac8 Category: Crystals Brand: QST

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：HC49 SMD MHZ QUARTZ XTAL / METAL
Series：QT49S
Mfr：QST
Package：Tape & Reel (TR)
Type：MHz Crystal
Frequency：12 MHz
Frequency Stability：±30ppm
Frequency Tolerance：±30ppm
Load Capacitance：18pF
ESR (Equivalent Series Resistance)：40 Ohms
Operating Mode：Fundamental
Operating Temperature：-20°C ~ 70°C
Ratings：-
Mounting Type：Surface Mount
Package / Case：HC-49/US
Size / Dimension：0.449" L x 0.189" W (11.40mm x 4.80mm)
Height - Seated (Max)：-

Download product information

QT49S-12.000MAAJ-T

Overview

The QT49S-12.000MAAJ-T is a quartz crystal resonator manufactured by QST, operating at a nominal frequency of 12 MHz. It utilizes fundamental oscillation mode and features an HC-49/US surface-mount package with dimensions of 11.4mm x 4.35mm x 3.8mm. The component exhibits a load capacitance of 18pF and an equivalent series resistance (ESR) of 40 Ohms. Frequency stability is rated at ±30ppm at 25°C and ±30ppm across the operating temperature range of -20°C to +70°C.

Feature Summary

Fundamental mode operation for stable signal generation
Surface-mount HC-49/US package design
Defined load capacitance and ESR specifications

Applications

General-purpose clock signal generation in electronic circuits
Frequency reference sources for microcontroller systems
Timing applications within specified industrial temperature ranges

Procurement Notes

Verify that the specific part number matches the required frequency, tolerance, and package type before procurement. Confirm that the supplier provides valid documentation regarding RoHS compliance and manufacturing origin. Ensure that the received components match the physical dimensions and marking of the official datasheet to prevent integration errors during assembly.

Selection Notes

Select this component when a standard HC-49/US form factor is required for surface-mount applications. Consider the ±30ppm stability rating against system timing requirements. Evaluate the -20°C to +70°C operating range to ensure compatibility with the intended environmental conditions. Compare ESR values with oscillator circuit designs to guarantee proper startup and sustained oscillation.

Part Context

This component belongs to the QT49S series of quartz crystals from QST. The series offers various frequencies and packages, including through-hole and surface-mount options. The QT49S-12.000MAAJ-T specifically addresses the need for a 12 MHz reference in compact surface-mount layouts while maintaining the robustness associated with the HC-49/US style housing.