RO3118D

Overview

The RO3118D is a surface-mount ceramic resonator manufactured by RFMi, designed for frequency control in wireless applications. It operates at a nominal frequency of 318.000 MHz and features a compact 6-SMD, no-lead package with dimensions of 3.8 mm x 3.8 mm and a height of 1.3 mm. The component exhibits a frequency stability of 10 PPM and a tolerance of ±75 kHz, ensuring precise signal generation for transmitter circuits.

Feature Summary

• Surface-mount design for automated assembly
• Optimized for transmitter frequency control
• Compact footprint suitable for space-constrained PCB layouts

Applications

• Wireless communication transmitters
• IoT device frequency reference
• RF signal generation circuits

Procurement Notes

Verify the specific frequency tolerance and stability requirements against the application datasheet before ordering. Confirm that the 6-SMD package dimensions align with the target PCB footprint. Ensure the operating temperature range meets the environmental specifications of the final product to guarantee long-term reliability.

Selection Notes

Select this component when a cost-effective, low-profile frequency reference is required for sub-GHz transmitter applications. Consider the ±75 kHz tolerance for systems requiring moderate frequency accuracy. Evaluate the 10 PPM stability against phase noise requirements if used in sensitive RF paths.

Part Context

RFMi, an Akoustis brand, specializes in SAW, crystal, and ceramic components for digital and wireless markets. The RO3118D belongs to their resonator portfolio, which serves as a key frequency control element in modern transmitters, offering an alternative to bulkier crystal oscillators.

Replacement Considerations

Check for direct substitutes from Murata or TST, as they have acquired certain legacy SAW product lines previously associated with RFM Integrated Device. Verify pin compatibility and electrical parameters before swapping.