49USBS0400BMDAXBENE-B

Crystals Overview

The HKC 49USBS0400BMDAXBENE-B is a fundamental frequency quartz crystal resonator designed for general-purpose timing applications. It operates at a nominal frequency of 4 MHz with a load capacitance of 17 pF and an equivalent series resistance (ESR) of 150 Ohms. The component provides a frequency tolerance of ±10 ppm and a stability of ±30 ppm across the operating temperature range of -40°C to +85°C. It utilizes the HC-49/US package, measuring 11.05 mm in length, 4.70 mm in width, and 3.50 mm in maximum height.

Crystals Feature Summary

• Fundamental mode quartz crystal operation
• Standard HC-49/US through-hole package
• Wide industrial temperature range capability

Crystals Applications

• Microcontroller clock circuits
• General-purpose digital timing systems
• Industrial control equipment oscillators

Crystals Procurement Notes

Verify that the specific ordering suffix matches the required load capacitance and frequency tolerance specifications. Confirm the package type aligns with existing PCB footprint requirements. Ensure the operating temperature range meets the environmental conditions of the target application. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and supply chain integrity.

Crystals Selection Notes

Select this component when a standard 4 MHz reference is required for basic digital logic or microcontroller interfaces. The HC-49/US form factor is suitable for prototyping and through-hole manufacturing processes. Consider the ESR value to ensure compatibility with the oscillator circuit's drive level constraints. Evaluate the ±10 ppm tolerance against the system's overall timing accuracy requirements.

Crystals Part Context

This part belongs to the family of fundamental frequency quartz crystals manufactured by HKC. These components are distinct from ceramic resonators or MEMS oscillators, offering high Q-factor and long-term stability. The HC-49/US style is a legacy but widely adopted package for discrete crystal applications in consumer and industrial electronics.

Crystals Replacement Considerations

Substitute parts must maintain the 4 MHz frequency, 17 pF load capacitance, and HC-49/US package dimensions. Verify that alternative manufacturers offer matching ±10 ppm tolerance and similar ESR characteristics to ensure circuit performance parity.