090-44350-21

Overview

The Microsemi 090-44350-21 is a 10 MHz atomic oscillator utilizing a rubidium frequency standard. It operates on a single 5V supply with a maximum current consumption of 2.8A. The device features CMOS output signals and offers high frequency stability of ±1ppb. Designed for through-hole installation, it measures 2.000 inches by 2.000 inches with a maximum height of 0.740 inches. The unit functions within an operating temperature range of -10°C to 75°C and belongs to the SA.35m series.

Feature Summary

• High-precision atomic clock performance based on rubidium technology
• Small form factor compatible with standard OCXO pinout configurations
• CMOS output signal generation for digital interface compatibility

Applications

• Telecommunications network synchronization equipment
• Precision timing systems requiring long-term frequency stability
• Test and measurement instrumentation applications

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of availability should focus on surplus distributors or secondary market channels rather than direct factory orders. Confirm end-of-life status and potential lead times with suppliers before finalizing procurement plans.

Selection Notes

Select this model when specific 10 MHz atomic stability is required in a standard OCXO footprint. Ensure system power supplies can deliver up to 2.8A at 5V. Verify that CMOS output levels match downstream logic requirements and that the thermal environment stays within the specified -10°C to 75°C operational range.

Part Context

Part of the SA.35m series from Microsemi, now part of Microchip Technology. This series provides compact atomic clock solutions designed to replace larger traditional oven-controlled crystal oscillators while maintaining superior frequency accuracy and holdover capabilities in space-constrained electronic assemblies.

Replacement Considerations

As this part is obsolete, verify cross-reference options such as the 090-44350-31 for similar atomic clock functionality. Check mechanical dimensions and pinout compatibility carefully when evaluating substitute components from other manufacturers.