SF2419E

Overview

The RFMi SF2419E is a surface-mount SAW bandpass filter designed for signal conditioning applications. It operates within a frequency range of 490 MHz to 500 MHz, with a center frequency of 495 MHz and a bandwidth of 10 MHz. The component features a 50 Ohms impedance and a maximum voltage rating of 3 V. Key electrical specifications include an insertion loss of 3.5 dB. It is housed in an SM-3030-6 package (3.00mm x 3.00mm) and supports SMD/SMT board mounting. The device functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• SAW technology provides precise bandpass filtering characteristics
• Compact SM-3030-6 surface mount package design
• AEC-Q200 automotive grade reliability certification

Applications

• Automotive telematics systems
• GNSS receiver front-end filtering
• Wireless communication modules

Procurement Notes

Verify the specific datasheet version for the SF2419E to confirm exact insertion loss values, as some sources cite 1.9 dB while others indicate 3.5 dB. Ensure compatibility with the SM-3030-6 footprint during PCB layout. Confirm RoHS compliance status and AEC-Q200 qualification requirements against your specific project standards before finalizing procurement.

Selection Notes

Select the SF2419E when a narrow 10 MHz bandwidth is required around 495 MHz. Its 50 Ohm impedance matches standard RF transmission lines. The AEC-Q200 rating makes it suitable for automotive environments requiring high thermal stability between -40°C and +85°C. Consider the small 3x3 mm package size for space-constrained designs.

Part Context

The SF2419E belongs to the RFMi SF series of signal conditioning components. This series focuses on compact SAW filters for RF applications. The SF2419E specifically targets the 490-500 MHz range, distinguishing it from other models like the SF2199E which operates at higher frequencies around 787 MHz.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameters carefully if considering alternative SAW filters from different manufacturers.