12.85539

Crystals Overview

The Geyer Electronic America, Inc. model 12.85539 is a surface-mount quartz crystal resonator designed for frequency control applications. It operates at a nominal frequency of 40.0 MHz with a load capacitance of 8 pF. The component features a 4-SMD, no-lead package configuration and exhibits an equivalent series resistance (ESR) of 60 Ohms. This device provides stable oscillation for electronic circuits requiring precise timing signals within a compact footprint suitable for modern board-level integration.

Crystals Feature Summary

• Surface-mount design for automated assembly
• Quartz crystal construction for frequency stability
• No-lead package format

Crystals Applications

• General purpose frequency control in electronic circuits
• Timing reference sources for microcontroller systems
• Oscillator circuits requiring 40 MHz stability

Crystals Procurement Notes

Verify the specific load capacitance requirement against your circuit design to ensure accurate frequency operation. Confirm that the 4-SMD no-lead package dimensions align with your PCB footprint constraints. Review the manufacturer's datasheet for soldering profile recommendations to maintain component integrity during assembly processes.

Crystals Selection Notes

Select this component when a 40 MHz reference signal is required in a small surface-mount form factor. Ensure the system design accommodates the specified 8 pF load capacitance to achieve the correct operating frequency. Consider the 60 Ohm ESR value for oscillator circuit stability calculations and drive level limitations.

Crystals Part Context

This part belongs to the standard quartz crystal product line manufactured by Geyer Electronic America, Inc. The company specializes in frequency control products including crystals, oscillators, and resonators. The 12.85539 designation identifies a specific frequency and package variant within their broader catalog of surface-mount timing devices.

Crystals Replacement Considerations

Consult official cross-reference lists or distributor databases for compatible alternatives. Verify that any substitute matches the 40.0 MHz frequency, 8 pF load capacitance, and 4-SMD package dimensions. Ensure the replacement maintains similar ESR characteristics and operating temperature ranges.