SF2182D

Overview

The SF2182D is a Surface Acoustic Wave (SAW) filter manufactured by RFMi, an Akoustis brand. It operates with a nominal center frequency of 140 MHz and provides a bandwidth of 43 MHz. The device supports impedance matching for both 50 Ohms and 200 Ohms systems. It features a maximum insertion loss of 15.0 dB and is rated for a voltage of 3 V. The component utilizes an SM3838-8 surface-mount package, measuring 3.8 x 3.8 mm.

Feature Summary

• Utilizes Surface Acoustic Wave technology for signal filtering
• Designed for reliable performance in embedded systems
• Supports multiple impedance configurations including 50 and 200 Ohms

Applications

• Embedded systems
• Industrial automation
• Electronics applications

Procurement Notes

Verify the manufacturer designation carefully, as the SF2182D part number appears across multiple vendors including Murata Manufacturing Co, TriQuint Semiconductor, and RF Monolithics, Inc, in addition to RFMi/Akoustis. Confirm that the specific datasheet matches the required electrical parameters, particularly the 140 MHz center frequency and 15.0 dB insertion loss limit. Ensure the package type corresponds to the SM3838-8 specification before finalizing procurement orders.

Selection Notes

Select this component when a 140 MHz SAW filter is required for signal conditioning in industrial or embedded environments. The dual impedance capability allows flexibility in circuit design for both 50 and 200 Ohm systems. Consider the compact SM3838-8 surface-mount package for space-constrained layouts. Verify compatibility with the 3 V voltage rating and ensure the application does not exceed the specified insertion loss constraints.

Part Context

RFMi, now part of Akoustis, specializes in RF components based on SAW, Xtal, and Ceramic technologies. The SF2182D belongs to their SAW filter portfolio, designed for digital and wireless applications. This component is functionally similar to other 140 MHz SAW filters offered by manufacturers such as Murata and TriQuint, indicating a standardized role in RF signal processing within the broader industry ecosystem.

Replacement Considerations

Publicly confirmed substitute part numbers include Murata SF2182D, TriQuint 856020, 856067, 856074, and 856692, and RF Monolithics SF2182D. Cross-reference datasheets to ensure identical center frequency and impedance specifications before substitution.