LFXTAL003074B

Overview

The LFXTAL003074B is a quartz crystal manufactured by IQD Frequency Products, operating at a nominal frequency of 4 MHz. It features a load capacitance of 30 pF and a frequency tolerance of ±20 ppm at 25°C. The unit exhibits a frequency stability of ±50 ppm across its operational range. Electrical characteristics include an equivalent series resistance (ESR) of 130 Ohms and a drive level of 500 uW. The component utilizes HC-49/4H packaging with radial termination style. Physical dimensions are specified as 11.05 mm in length, 4.7 mm in width, and 4.3 mm in height. The lead spacing measures 4.88 mm. Operational temperature limits extend from -10°C to +60°C.

Feature Summary

• Hermetically sealed construction using resistance welding within an inert atmosphere
• Glass-to-metal seals on leads for environmental protection
• Industry standard HC-49/4H package design

Applications

• General purpose timing circuits requiring stable 4 MHz reference
• Microcontroller clock generation systems
• Communication equipment signal processing

Procurement Notes

Verify the specific suffix 'B' against official IQD documentation to confirm exact mechanical or electrical variations compared to the base LFXTAL003074 model. Ensure compatibility with target circuit load capacitance requirements. Confirm availability status through authorized distributors as supply conditions may vary. Validate RoHS compliance details prior to integration into regulated products.

Selection Notes

Select this component when a 4 MHz fundamental frequency is required with moderate stability specifications. The HC-49/4H package suits through-hole mounting applications. Consider the 130 Ohm ESR value for oscillator circuit design constraints. Verify that the ±20 ppm initial tolerance meets system accuracy needs. Check thermal performance against the -10°C to +60°C operating range.

Part Context

This part belongs to the LFXTAL series of quartz crystals produced by IQD Frequency Products. The series offers various frequencies and packages tailored for electronic timing applications. The HC-49/4H variant represents a specific form factor within the broader crystal portfolio, balancing size and performance for standard PCB layouts.

Replacement Considerations

Direct substitutes must match the 4 MHz frequency, 30 pF load capacitance, and HC-49/4H package dimensions. Verify equivalent ESR and drive level specifications to ensure oscillator startup reliability. Cross-reference manufacturer datasheets for pinout and sealing method compatibility.