RF3181E

Overview

The Murata Electronics RF3181E is a Surface Acoustic Wave (SAW) filter designed for front-end selectivity in narrowband receiver applications. It operates at a center frequency of 916.5 MHz with a bandwidth of 750 kHz. The component features an insertion loss of 2.7 dB and is housed in a compact 6-SMD, no-lead package measuring 3.00 mm x 3.00 mm x 1.38 mm. It supports a voltage rating of 12 V and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides front-end selectivity for narrowband receivers using surface acoustic wave technology
• Compact design suitable for space-constrained electronic assemblies
• Optimized for low-loss signal transmission in meter reading applications

Applications

• Meter reading systems
• Narrowband receiver front ends
• Signal conditioning circuits

Procurement Notes

Verify the current lifecycle status before procurement, as the RF3181E has been reported as obsolete or not recommended for new designs. Confirm RoHS3 compliance and specific packaging requirements such as tape and reel quantities. Ensure that any substitute components meet the exact electrical specifications, particularly the 916.5 MHz center frequency and 750 kHz bandwidth, to maintain system performance.

Selection Notes

Select this component when designing receivers requiring precise filtering at 916.5 MHz. Consider the 6-SMD package size for PCB layout constraints. Evaluate the 2.7 dB insertion loss against system sensitivity requirements. Verify compatibility with the operating temperature range of -40°C to +125°C for environmental robustness.

Part Context

The RF3181E belongs to the RF31 series of SAW filters manufactured by Murata Electronics. These filters are engineered for high performance in radio frequency applications. The part is specifically tailored for use in meter reading infrastructure, providing reliable signal integrity in industrial and utility measurement environments.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Due to the component's obsolete status, engineers must identify alternative SAW filters with matching 916.5 MHz center frequency, 750 kHz bandwidth, and compatible SMD footprint through independent technical cross-referencing.