4DFA-902E-10=P

Overview

The 4DFA-902E-10=P is a dielectric RF bandpass filter manufactured by Toko America Inc. It operates at a center frequency of 902.5 MHz and utilizes a 5-terminal surface-mount device (SMD) package. The component belongs to the 4DFA series, which covers a frequency range of 700 to 2500 MHz. It is designed for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Dielectric construction for stable RF filtering performance
• Surface-mount design for automated assembly integration
• Bandpass characteristic centered at 902.5 MHz

Applications

• Wireless communication systems operating in the 902.5 MHz ISM band
• RF front-end modules requiring signal isolation
• Industrial, scientific, and medical equipment filters

Procurement Notes

Verify the exact center frequency specification of 902.5 MHz against system requirements. Confirm the 5-terminal SMD package dimensions fit the PCB layout. Ensure the -40°C to +85°C operating temperature range meets environmental conditions. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a fixed 902.5 MHz bandpass response is required. Compare insertion loss and rejection characteristics against alternative 4DFA series variants like the 4DFA-904A-10=P if frequency adjustments are needed. Consider the 5-terminal SMD form factor for space-constrained designs.

Part Context

This part is part of the 4DFA series from Toko America Inc., which includes various dielectric filters for RF applications. The series supports frequencies from 700 to 2500 MHz. Related parts include the 4DFB series for different pole configurations and other 4DFA variants with different center frequencies.

Replacement Considerations

The 4DFA-904A-10=P is a similar dielectric filter in the same series but operates at 904.0 MHz. Verify that the slight frequency shift is acceptable for the application before substitution.