7R-27.120MEHQ-T

Crystals Overview

The 7R-27.120MEHQ-T is a MHz quartz crystal manufactured by TXC Corporation, designed for surface-mount applications. It operates at a nominal frequency of 27.12 MHz with a load capacitance of 10 pF. The component exhibits a frequency stability of ±10 ppm at 25°C and ±30 ppm across the temperature range of -40°C to +85°C. It features a 4-SMD, no-lead package with dimensions of 2.0 mm x 1.6 mm. The equivalent series resistance (ESR) is specified as 150 Ohms. This device utilizes a glass seal ceramic construction, ensuring reliability in standard electronic circuits requiring precise timing signals within the specified thermal operating window.

Crystals Feature Summary

• Utilizes glass seal ceramic construction for enhanced environmental stability
• Provides high frequency precision with ±10 ppm stability at reference temperature
• Supports wide operational temperature ranges from -40°C to +85°C
• Designed for compact surface-mount integration via 4-SMD no-lead packaging

Crystals Applications

• Precision timing circuits requiring stable clock references
• Consumer electronics utilizing 27.12 MHz signal generation
• Industrial control systems operating in variable thermal environments
• Communication modules requiring specific MHz frequency standards

Crystals Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and MSL rating prior to assembly. Ensure storage conditions adhere to moisture sensitivity guidelines to maintain solderability. Cross-reference datasheet specifications against current revision documents to validate performance parameters before final procurement decisions.

Crystals Selection Notes

Select this component when a 27.12 MHz frequency is required with tight initial tolerance. The 10 pF load capacitance must match the oscillator circuit design. Consider the 150 Ohm ESR value for impedance matching requirements. The 2.0x1.6 mm footprint dictates PCB layout constraints. Verify that the ±30 ppm stability over temperature meets system accuracy needs.

Crystals Part Context

This part belongs to the 7R series of crystals from TXC Corporation, characterized by glass-sealed ceramic packages. It differs from other series like 7V or 7M by its smaller 2.0x1.6 mm form factor and specific ±10 ppm stability class. The series targets applications demanding high precision in compact surface-mount designs compared to larger HC-49 or standard SMD crystals.

Crystals Replacement Considerations

QT325G-27.120MAHV-T by QST is listed as a substitute option. Verify dimensional compatibility and electrical parameter alignment, specifically load capacitance and stability ratings, before substitution.