RH100-27.120-18-F-1515-TR

Crystals Overview

The RH100-27.120-18-F-1515-TR is a surface-mount crystal oscillator from Raltron Electronics, designed for microprocessor clock applications. It operates at a nominal frequency of 27.120 MHz in fundamental mode. The device features a maximum frequency tolerance of ±15 ppm at 25°C and a total frequency deviation of ±32 ppm over the operating temperature range of -20°C to +70°C, accounting for initial tolerance, temperature stability, and first-year aging of ±2 ppm. Key electrical parameters include a load capacitance of 18 pF, a maximum equivalent series resistance (ESR) of 60 Ω, and a maximum drive level of 300 μW. The component utilizes a 1515 metric package size.

Crystals Feature Summary

• Fundamental mode oscillation eliminates the need for overtone suppression circuits.
• Optimized for standard lead-free reflow soldering processes with defined thermal limits.
• Integrated identification markings on the package body for traceability.

Crystals Applications

• 2.4 GHz wireless peripheral devices
• Consumer electronics requiring stable system clocks
• Short-range wireless communication modules

Crystals Procurement Notes

Verify that the application circuit matches the specified 18 pF load capacitance to prevent frequency deviation beyond specifications. Ensure PCB layout accounts for stray capacitance when selecting external matching capacitors. Confirm that the driving power does not exceed the 300 μW maximum limit to avoid damaging the resonator or accelerating aging. Check the package marking codes to verify production date and batch authenticity upon receipt.

Crystals Selection Notes

Select this component for cost-sensitive consumer applications where moderate frequency stability is sufficient. It is suitable for indoor environments within the -20°C to +70°C range. Do not use for industrial or automotive applications requiring wider temperature ranges or higher precision. Designers must calculate external capacitors based on the 18 pF specification rather than default values.

Crystals Part Context

This part belongs to the RH100 series of surface-mount crystals manufactured by Raltron Electronics. The series targets microprocessor clock sources in compact electronic designs. The 1515 package provides a small footprint suitable for space-constrained printed circuit boards. The 27.120 MHz frequency is commonly used in RF and audio codec applications.

Crystals Replacement Considerations

Substitutes must match the 27.120 MHz frequency, 18 pF load capacitance, and 1515 package dimensions. Verify that alternative components meet the same ±15 ppm tolerance and -20°C to +70°C operating temperature requirements. Ensure the replacement supports the same maximum drive level and ESR specifications.