12.8652

Crystals Overview

The Geyer Electronic America, Inc. model 12.8652 is a surface-mount quartz crystal resonator designed for frequency control applications. It operates at a fundamental frequency of 27 MHz with a standard load capacitance of 10 pF. The component features a four-terminal SMD package configuration and exhibits an equivalent series resistance (ESR) of 80 ohms. Frequency tolerance is specified at ±50 ppm. This device is engineered for integration into compact electronic circuits requiring stable high-frequency oscillation.

Crystals Feature Summary

• Surface-mount construction optimized for automated pick-and-place assembly processes
• Fundamental mode operation providing stable oscillation at 27 MHz
• Standardized 10 pF load capacitance compatibility for common oscillator circuit designs

Crystals Applications

• RF transmitter modules
• Wireless communication interfaces
• Microcontroller clock sources

Crystals Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and packaging specifications. Ensure that the requested part number matches the required frequency stability and package dimensions for your PCB layout. Cross-reference datasheet revisions to guarantee compliance with current manufacturing standards before finalizing procurement orders.

Crystals Selection Notes

Select this component when a 27 MHz fundamental frequency is required in a low-profile surface-mount form factor. Consider the 80-ohm ESR value for oscillator circuit gain margin calculations. Verify that the ±50 ppm frequency tolerance aligns with system timing requirements. Ensure the 10 pF load capacitance matches the external capacitors used in the host oscillator design.

Crystals Part Context

This part belongs to Geyer Electronic America's line of quartz crystal resonators. The company specializes in frequency control products including crystals, oscillators, and ceramic resonators. These components are widely utilized in consumer electronics, industrial controls, and telecommunications equipment where precise timing signals are essential for reliable system operation.

Crystals Replacement Considerations

Direct substitutes must match the 27 MHz frequency, 10 pF load capacitance, 80 ohm ESR, and 4-SMD flat lead package geometry. Verify that alternative manufacturers offer identical frequency tolerance and operating temperature ranges. Confirm pinout compatibility and thermal characteristics to ensure seamless integration without redesigning the host circuit board.