251-03230

Crystals Overview

The Parallax Inc. model 251-03230 is a through-hole crystal oscillator component designed for embedded systems. It operates at a nominal frequency of 32.768 kHz with a load capacitance of 12.5 pF. The device utilizes an HC-49US package style, ensuring compatibility with standard PCB layouts. This specific part number identifies the standalone resonator element used in timing circuits.

Crystals Feature Summary

• Provides precise 32.768 kHz timing reference
• Through-hole mounting configuration
• Standard 12.5 pF load capacitance specification

Crystals Applications

• Real-time clock circuits
• Microcontroller system oscillators
• Low-frequency timing references

Crystals Procurement Notes

Verify the exact package dimensions and lead finish specifications against your PCB footprint requirements before ordering. Confirm that the 12.5 pF load capacitance matches your circuit design needs. Ensure the through-hole technology aligns with your assembly capabilities. Cross-reference the manufacturer datasheet for storage and handling guidelines to maintain component integrity during production.

Crystals Selection Notes

Select this component when a stable 32.768 kHz reference is required for low-power applications. Consider the through-hole form factor if surface-mount options are unavailable or if mechanical robustness is prioritized. Evaluate the operating temperature range against your environmental constraints. Compare alternative crystals only if specific frequency stability or tolerance requirements differ from standard general-purpose specifications.

Crystals Part Context

This component belongs to the broader category of passive electronic components manufactured by Parallax Inc. It serves as a fundamental timing element within larger embedded development kits and microcontroller systems. The part is distinct from active oscillators or integrated circuits, functioning solely as a resonant frequency generator.