S21805T-40.000-R

Oscillators Overview

The S21805T-40.000-R is a 40 MHz HCMOS crystal oscillator manufactured by Aker Technology Corp. It operates on a 1.8V supply and features an enable/disable control function. The device utilizes a 4-SMD, no-lead surface-mount package. Key electrical specifications include a frequency stability of ±50ppm and a standard output type. This component is designed for applications requiring precise clock signals with low power consumption and compact form factors.

Oscillators Feature Summary

• HCMOS output signal compatibility
• Integrated enable/disable control functionality
• Low voltage 1.8V operation
• Compact surface-mount packaging

Oscillators Applications

• Portable electronic devices requiring low power clocks
• Embedded systems with limited voltage rails
• Communication modules needing stable timing references
• Industrial control boards with space constraints

Oscillators Procurement Notes

Verify the specific suffix codes against official Aker Technology documentation to ensure correct voltage and output configuration. Confirm RoHS compliance status through current manufacturer declarations. Cross-reference the part number with authorized distributors to validate authenticity and avoid counterfeit components. Ensure the selected variant matches the required enable/disable pinout for your circuit design.

Oscillators Selection Notes

Select this oscillator when a 40 MHz HCMOS clock is required with 1.8V logic compatibility. Consider the ±50ppm stability for general timing applications rather than high-precision RF needs. Evaluate the enable/disable feature if power management during idle states is critical. Compare physical dimensions against PCB layout constraints before finalizing the component choice.

Oscillators Part Context

This model belongs to Aker Technology's series of surface-mount crystal oscillators. It provides a standardized clock solution for digital circuits. The 4-pin SMD format facilitates automated assembly processes. It serves as a direct replacement for legacy through-hole or larger surface-mount oscillators in modern miniaturized electronics designs.

Oscillators Replacement Considerations

Check for compatible substitutes within the same Aker Technology family that offer different stability grades or voltage options. Verify pin-to-pin compatibility with existing board layouts. Ensure equivalent frequency tolerance and load capacitance requirements are met by alternative parts.