SMR-8.000-B

Overview

The SMR-8.000-B is a surface-mount ceramic resonator manufactured by Raltron Electronics, operating at a nominal frequency of 8 MHz. It features a three-pin SMD package configuration designed for compact circuit board integration. The component exhibits a frequency tolerance of ±0.5% and a frequency stability of ±0.3%. It operates with a load capacitance of 33 pF and possesses an equivalent series resistance (ESR) of 30 Ohms. The device supports a functional temperature range from -20°C to +80°C, suitable for commercial applications.

Feature Summary

• Three-pin surface mount architecture for simplified PCB layout
• High frequency stability of ±0.3% for precise timing requirements
• Integrated capacitive structure eliminating external matching components

Applications

• Microcontroller system clock generation
• Consumer electronic timing circuits
• General-purpose digital logic synchronization

Procurement Notes

Verify the specific package dimensions against the official datasheet to ensure compatibility with automated pick-and-place equipment. Confirm that the 33 pF internal load capacitance aligns with the target microcontroller's oscillator input specifications. Ensure the operating temperature range meets the environmental requirements of the final assembly.

Selection Notes

Select this component when cost-effective timing solutions are required for non-critical clock sources. The integrated capacitor design reduces bill-of-materials complexity compared to discrete crystal setups. Consider the ±0.5% tolerance limit; it may not be suitable for high-precision serial communication interfaces requiring tighter frequency accuracy.

Part Context

This ceramic resonator belongs to Raltron's standard surface-mount resonator lineup. It serves as an alternative to traditional quartz crystals in applications where moderate frequency accuracy is acceptable. The three-pin format distinguishes it from two-pin crystal variants, offering a self-contained oscillating element.

Replacement Considerations

Direct substitutes must match the 8 MHz frequency, 33 pF load capacitance, and 30 Ohm ESR. Verify pinout compatibility for the three-terminal SMD package. Cross-reference with other manufacturers' ceramic resonators offering similar stability ratings.