B39321B3741H110

Overview

The B39321B3741H110 is a Surface Acoustic Wave (SAW) filter manufactured by Qualcomm RF front-end filters. Designed for signal conditioning, it operates at a center frequency of 315 MHz with a bandwidth of 360 kHz. The component features an insertion loss of 2.1 dB and supports a maximum voltage rating of 6 V across a 50 Ohm impedance. It utilizes a 6-SMD, no-lead package measuring 3 mm x 3 mm with a maximum height of 1.00 mm. The device is rated for operation between -45°C and +125°C and meets AEC-Q200 automotive standards.

Feature Summary

• Surface Acoustic Wave technology optimized for low-loss performance in compact form factors
• Automotive-grade reliability compliant with AEC-Q200 qualification standards
• High thermal stability supporting extended industrial temperature ranges

Applications

• Remote control systems operating in the ISM band
• Industrial IoT sensor nodes requiring robust RF filtering
• Smart home devices utilizing 315 MHz communication protocols

Procurement Notes

Verify the specific datasheet revision and Product Change Notification history before integration, as manufacturing updates may affect mechanical or electrical characteristics. Confirm that the 6-SMD package dimensions align with the target PCB footprint. Ensure the design accounts for the specified 6 V maximum voltage rating and 50 Ohm system impedance to maintain signal integrity and prevent component damage during operation.

Selection Notes

Select this component when a narrow 360 kHz bandwidth is required for precise 315 MHz signal isolation. The choice is driven by the need for automotive-grade durability combined with a small 3x3 mm footprint. Consider the 2.1 dB insertion loss impact on link budget calculations. This part is suitable for designs prioritizing high thermal endurance over ultra-low power consumption profiles.

Part Context

This SAW filter belongs to the B39321 series of discrete RF components from Qualcomm. It complements broader RFFE portfolios including ultraBAW and TC-SAW technologies. The series targets applications demanding reliable filtering for wireless connectivity in constrained spaces. It serves as a specialized solution for fixed-frequency remote control and IoT links rather than broadband cellular applications.

Replacement Considerations

The B39321B3731H110 offers similar packaging but differs in bandwidth and insertion loss specifications. Verify compatibility if substituting, as the alternative may have different selectivity characteristics. No direct pin-for-pin equivalents are confirmed in public documentation without detailed parameter comparison.