WC38F-32.768KHZ

Crystals Overview

The MMD WC38F-32.768KHZ is a cylindrical, radial leaded crystal unit operating at a fundamental frequency of 32.768 kHz. It features a tolerance of ±20 ppm and a load capacitance of 12.5 pF. The equivalent series resistance (ESR) is specified as 35 kΩ maximum. The component operates within a temperature range of -20°C to +70°C. It utilizes a two-pin through-hole mounting configuration with a cylindrical metal can package measuring 3.1 mm in diameter and 8.2 mm in total length.

Crystals Feature Summary

• Fundamental mode oscillation for stable timekeeping
• Cylindrical metal can construction for environmental protection
• Radial leaded design facilitating through-hole PCB integration

Crystals Applications

• Real-time clock circuits in consumer electronics
• Industrial timing and metering devices
• Access control systems requiring precise time reference

Crystals Procurement Notes

Verify the specific suffix 'F' against the manufacturer's current datasheet to confirm exact dimensional tolerances and terminal plating specifications. Ensure the selected load capacitance matches the oscillator circuit requirements to maintain frequency accuracy within the stated ±20 ppm tolerance across the operating temperature range.

Crystals Selection Notes

Select this component when a standard cylindrical form factor is required for through-hole assembly. The 35 kΩ ESR limit suits moderate drive levels typical in RTC applications. Consider the physical dimensions relative to available board space and ensure the thermal environment remains within the -20°C to +70°C operational window for reliable performance.

Crystals Part Context

This part belongs to the WC series of cylindrical crystals from MMD Components. The WC38 designation indicates a specific physical size category within the product line, distinguishing it from smaller variants like WC155 or WC26. The series is designed for general-purpose frequency control applications where standard packaging and proven reliability are prioritized over miniaturization.

Crystals Replacement Considerations

Cross-reference with other manufacturers offering 32.768 kHz cylindrical crystals with matching 12.5 pF load capacitance and ≤35 kΩ ESR. Verify that substitute parts support the same radial pin spacing and overall height constraints to ensure mechanical compatibility without redesigning the footprint.