AM491S153

Overview

The AM491S153 is a surface acoustic wave (SAW) bandpass filter manufactured by Anatech Electronics Inc. Designed for cellular CDMA RF applications, it operates at a center frequency of 491.2 MHz with a bandwidth of 4.5 MHz. The device features an insertion loss of 2.5 dB and is housed in a compact SMD3030-6P package without leads. It supports an operating temperature range from -30°C to +80°C.

Feature Summary

• Surface acoustic wave technology optimized for RF signal filtering
• Designed specifically for cellular CDMA communication systems
• Compact leadless surface mount packaging for space-constrained designs

Applications

• Cellular CDMA RF transmitter stages
• RF front-end modules for mobile devices
• Base station receiver input filtering

Procurement Notes

Verify the specific datasheet version when sourcing, as manufacturer documentation may vary. Confirm that the SMD3030-6P package matches your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Check RoHS compliance status if required by your manufacturing standards. Validate the center frequency tolerance against your system design needs before finalizing procurement.

Selection Notes

Select this component when designing for CDMA bands around 491 MHz. The low insertion loss of 2.5 dB helps maintain signal integrity in sensitive RF paths. The small form factor suits portable electronics where board space is limited. Consider the thermal range if the device will operate in extreme environments. Ensure impedance matching circuits are compatible with the filter's characteristics.

Part Context

This SAW filter belongs to Anatech Electronics' portfolio of RF components targeting wireless communication markets. It addresses the need for precise frequency selection in CDMA networks. The technology leverages surface acoustic waves to achieve sharp roll-off characteristics. Such filters are critical for isolating desired signals from adjacent channel interference in modern telecommunication hardware.

Replacement Considerations

No public confirmed substitute part numbers are available for this component.