CS04340-19.2MM

Overview

The CS04340-19.2MM is a surface-mount quartz crystal manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a nominal frequency of 19.2 MHz with a fundamental oscillation mode. The component features a load capacitance of 7 pF and an equivalent series resistance (ESR) of 70 Ohms. Frequency tolerance is specified at ±10 ppm, while overall stability is rated at ±12 ppm. It utilizes a 4-SMD, No Lead package with dimensions of 2.5 mm x 2.0 mm x 0.9 mm. The device supports an operating temperature range from -30°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Fundamental mode operation for simplified circuit design without overtone filtering
• Compact 2.5mm x 2.0mm SMD footprint suitable for space-constrained layouts
• Wide industrial temperature range supporting -30°C to +85°C environments

Applications

• NB-IoT cellular modem reference clocks
• Industrial IoT gateway timing sources
• Mobile cellular terminal clock generation

Procurement Notes

Verify the specific suffix requirements against the target application's thermal profile. Confirm that the 7pF load capacitance aligns with the host oscillator circuit design to ensure accurate frequency performance. Check for RoHS3 compliance documentation if required by regional regulations. Ensure the 4-SMD no-lead package matches the PCB footprint specifications before finalizing procurement orders.

Selection Notes

Select this component when a 19.2 MHz fundamental frequency is required for cellular communication protocols. The 70 Ohm ESR provides sufficient margin for standard oscillator circuits. Consider the ±12 ppm total stability for applications requiring moderate precision over wide temperature ranges. The compact size makes it ideal for dense PCB layouts in portable or embedded devices.

Part Context

This part belongs to the NX2520SG series of surface-mount crystals designed for high-frequency applications. It serves as a critical timing element for synchronization in wireless communication modules. The 19.2 MHz frequency is commonly used as a base clock for LTE and NB-IoT modems, ensuring compatibility with standard protocol stacks without software modification.

Replacement Considerations

Direct substitutes include other 19.2 MHz crystals with identical 7pF load capacitance and 4-SMD 2.5x2.0mm packages. Verify ESR limits and temperature stability ratings match the original design constraints before swapping manufacturers.