B39871B4365P810

Overview

The B39871B4365P810 is a Surface Acoustic Wave (SAW) filter manufactured by Qualcomm RF360. It operates at a center frequency of 869 MHz with a 2 MHz bandwidth and 50 Ohms impedance. The device features 2.5 dB insertion loss and is housed in a compact 1.4 mm x 1.1 mm x 0.45 mm 5-SMD, No Lead package. Designed for ISM applications, it supports surface mount installation and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Utilizes Surface Acoustic Wave technology for high-performance signal conditioning
• Engineered specifically for Industrial, Scientific, and Medical frequency bands
• Provides efficient RF filtering in an ultra-compact footprint

Applications

• ISM band wireless communication modules
• Industrial IoT sensor networks
• Smart home connectivity devices

Procurement Notes

Verify the specific manufacturer designation, as documentation references both Qualcomm and RF360. Confirm the moisture sensitivity level (MSL 2A) and reflow soldering profile requirements before assembly. Ensure the 5-SMD package dimensions align with the target PCB layout. Cross-reference the datasheet version to confirm current RoHS compliance status.

Selection Notes

Select this component when designing for the 869 MHz ISM band requiring narrow 2 MHz bandwidth filtering. The small 1.4x1.1mm package is suitable for space-constrained portable or embedded designs. Consider the 2.5dB insertion loss impact on system power budget. Verify compatibility with standard SMT reflow processes given the MSL rating.

Part Context

This part belongs to the B39871 series of RF front-end filters from Qualcomm. These components are designed to address modern wireless connectivity challenges using advanced acoustic technologies. The series supports various global standards and frequency bands, enabling manufacturers to develop energy-efficient multiband devices with slim form factors.

Replacement Considerations

TA1946A is listed as a parameter-equivalent substitute.