49US9S0400BMDALDDNE-B

Crystals Overview

The HKC 49US9S0400BMDALDDNE-B is a 4 MHz MHz crystal oscillator housed in an HC-49/US package. It features a frequency stability and tolerance of ±20ppm, with a load capacitance of 15pF and an equivalent series resistance (ESR) of 150 Ohms. The component operates within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• HC-49/US surface mount or through-hole compatible package
• Stable 4 MHz oscillation frequency
• Wide industrial operating temperature range

Crystals Applications

• General purpose clock generation circuits
• Microcontroller system timing references
• Communication interface synchronization

Crystals Procurement Notes

Verify the exact pin configuration and mounting style against the official datasheet before integration. Confirm that the ±20ppm stability meets the specific timing requirements of the target application circuit. Ensure the operating temperature range covers the environmental conditions of the final product deployment.

Crystals Selection Notes

Select this component when a standard 4 MHz reference is required for cost-sensitive designs. The HC-49/US form factor offers robust mechanical stability. Consider the 150 Ohm ESR value when designing the oscillator circuit loading capacitors to ensure proper startup and frequency accuracy.

Crystals Part Context

This part belongs to the HKC 49US series of crystals. It serves as a fundamental passive component for providing precise timekeeping signals in electronic systems. The HC-49/US package is widely used in consumer electronics and industrial equipment due to its reliability and standardized dimensions.

Crystals Replacement Considerations

Direct substitutes must match the 4 MHz frequency, HC-49/US package, 15pF load capacitance, and ±20ppm stability. Verify ESR compatibility with existing oscillator circuits.