B82450A7204A000

Rfid Antennas Overview

The B82450A7204A000 is a surface-mount transponder coil designed for RFID applications operating at 125kHz. Manufactured by TDK under the EPCOS brand, this component features a rated inductance of 7.2mH with a tolerance of ±3%. It exhibits a minimum Q factor of 40 and typical sensitivity of 52mV/μT at the operating frequency. The physical dimensions are 11.4mm length, 3.5mm width, and 2.4mm height. It holds AEC-Q200 automotive qualification and complies with RoHS3 standards.

Rfid Antennas Feature Summary

• Optimized for low-frequency RFID transponder systems
• Automotive-grade reliability certified to AEC-Q200 standards
• Compact surface-mount footprint for automated assembly

Rfid Antennas Applications

• Automotive keyless entry systems
• Passive RFID tag antennas
• Low-frequency identification transponders

Rfid Antennas Procurement Notes

Verify the specific ordering code against the manufacturer's current catalog to ensure correct inductance and tolerance specifications. Confirm that the package type matches the required PCB layout constraints. Check for any recent datasheet revisions that may affect electrical parameters or mechanical tolerances prior to finalizing the bill of materials.

Rfid Antennas Selection Notes

Select this component when designing passive RFID readers requiring high sensitivity at 125kHz. The small form factor suits space-constrained automotive interfaces. Ensure the driving circuit can handle the 7.2mH inductive load. Verify thermal management requirements as the component operates within standard industrial temperature ranges defined by its automotive grade classification.

Rfid Antennas Part Context

This part belongs to the B82450 series of transponder coils from TDK Electronics. The series provides various inductance values tailored for different RFID frequencies. The B82450A variant specifically targets 125kHz applications, distinguishing it from higher-frequency NFC counterparts. It represents a transition from the legacy EPCOS branding to the unified TDK product line.

Rfid Antennas Replacement Considerations

Compatible substitutes include other B82450 series variants with matching 125kHz operation and similar inductance values. Cross-reference mechanical dimensions to ensure PCB compatibility. Verify that alternative parts meet the same AEC-Q200 automotive qualification if used in vehicle systems.