12.87818

Crystals Overview

The Geyer Electronic America, Inc. model 12.87818 is a quartz crystal resonator designed for precision frequency control applications. It operates at a fundamental frequency of 4.9152 MHz with a frequency tolerance of ±50 ppm. The component utilizes an HC-49/US package configuration and features a load capacitance specification of 16 pF. Physical dimensions are defined as 0.449 inches in length by 0.177 inches in width, equivalent to 11.40 mm by 4.50 mm. The unit employs a metal can surface mount construction with two pads.

Crystals Feature Summary

• Metal can surface mount construction for durability
• Fundamental mode quartz crystal operation
• Standard HC-49/US form factor compatibility

Crystals Applications

• Precision timing circuits
• Microcontroller clock sources
• Communication equipment oscillators

Crystals Procurement Notes

Verify the specific manufacturer part number against official Geyer Electronic America, Inc. documentation to ensure authenticity. Confirm that the required frequency tolerance and load capacitance align with the circuit design specifications before procurement. Check current availability status through authorized distributors due to potential lead time variations associated with high order volumes.

Crystals Selection Notes

Select this component when a 4.9152 MHz reference signal is required with moderate stability. Ensure the application circuit supports the specified 16 pF load capacitance to maintain accurate frequency output. Consider the physical footprint constraints of the HC-49/US package during PCB layout planning. Validate thermal operating ranges against the datasheet limits for the intended environment.

Crystals Part Context

This component belongs to the Geyer Electronic America, Inc. line of frequency control products, which includes quartz crystals, oscillators, and resonators. The manufacturer specializes in serving various electronic markets with dedicated design support services. This specific part represents their standard metal can surface mount crystal offerings.

Crystals Replacement Considerations

Consult official cross-reference data from Geyer Electronic America, Inc. or authorized distributors for verified substitute part numbers. Ensure any replacement maintains identical electrical parameters including frequency, tolerance, and load capacitance.