278-25-336SA2I

Crystals Overview

The Renesas 278-25-336SA2I is a surface-mount crystal oscillator operating at a fundamental frequency of 25 MHz. It features a load capacitance of 10 pF and an equivalent series resistance (ESR) of 40 Ohms. The unit utilizes the HC-49/US package style with dimensions of 13.9 x 5.0 x 4.4 mm. Frequency stability is rated at ±20 ppm, and it supports a standard supply voltage range of 3.0 V to 3.6 V. The component operates within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Provides stable 25 MHz clock signals for digital circuits
• Designed for surface-mount assembly via soldering
• Ensures reliable operation across industrial temperature ranges

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• General-purpose digital logic circuits

Crystals Procurement Notes

Verify the specific load capacitance requirement of the target circuit matches the 10 pF specification. Confirm that the 40 Ohm ESR aligns with the oscillator circuit design. Ensure the HC-49/US footprint and pin configuration are compatible with the PCB layout. Check that the ±20 ppm stability meets the system timing tolerance requirements.

Crystals Selection Notes

Select this component when a 25 MHz fundamental frequency is required for embedded systems. Consider the HC-49/US form factor for space-constrained designs needing robust mounting. Evaluate the ±20 ppm stability against system jitter sensitivity. Verify compatibility with the host controller's input impedance and drive level specifications.

Crystals Part Context

This part belongs to the Renesas crystal oscillator family, designed for general-purpose timing applications. It serves as a primary clock source for microcontrollers and digital logic. The product line emphasizes reliability and standard packaging for widespread integration in consumer and industrial electronics.

Crystals Replacement Considerations

Direct substitutes must match the 25 MHz frequency, 10 pF load capacitance, and HC-49/US package. Verify equivalent ESR and stability ratings. Cross-reference pinouts and electrical characteristics to ensure functional interchangeability without circuit modification.