FCR4.0M5

Resonators Overview

The FCR4.0M5 is a ceramic resonator manufactured by TDK Corporation, designed for through-hole mounting applications. It operates at a nominal frequency of 4.0000 MHz with a frequency stability of ±0.3%. The component features a radial package configuration with two leads and a pitch of 2.54 mm. Its physical dimensions are specified as 9.50 mm in length and 5.00 mm in width. The device exhibits an equivalent series resistance (ESR) of 20 Ohms and functions within a temperature range of -40°C to +85°C. This part is classified under the product type of crystals, oscillators, and resonators.

Resonators Feature Summary

• Utilizes ceramic resonance technology for stable frequency generation
• Designed for reliable through-hole PCB integration
• Compliant with RoHS environmental standards

Resonators Applications

• Microcontroller clock circuits
• Communication interface timing
• General-purpose digital logic synchronization

Resonators Procurement Notes

Verify the specific manufacturer designation, as TDK Corporation and TDK Electronics may have distinct product lines. Confirm that the required frequency stability and ESR values meet the target circuit design specifications. Check for availability status, as this model is listed as obsolete in some distributor catalogs. Ensure the through-hole package dimensions align with the printed board layout constraints.

Resonators Selection Notes

Select this component when a cost-effective, stable 4 MHz reference is needed for through-hole designs. Compare the 20 Ohm ESR against the oscillator input requirements to ensure proper startup. Consider the ±0.3% tolerance for precision timing needs. Evaluate alternative packages if surface-mount space is limited, though this model is strictly radial.

Resonators Part Context

This ceramic resonator belongs to TDK's standard passive component portfolio, serving as a frequency-determining element in electronic assemblies. It provides a lower-cost alternative to quartz crystals while offering better performance than LC tanks. The radial leaded format facilitates manual assembly and rework compared to surface-mount variants.

Resonators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status noted in some sources, verify current availability with authorized distributors before finalizing the design.