TA0991A

Overview

The TA0991A is a Surface Acoustic Wave (SAW) filter manufactured by TST, designed for wireless RF applications. It operates at a center frequency of 947.5 MHz with a bandwidth of 25 MHz and an insertion loss of 3.3 dB. The component utilizes a 6-SMD, No Lead package (SMD3030-6P). Electrical performance specifications include attenuation values of 54 dB, 47 dB, 25 dB, 52 dB, and 31 dB at specific frequencies. The device supports an operating temperature range from -30°C to +85°C.

Feature Summary

• Utilizes Surface Acoustic Wave technology for signal filtering
• Optimized for wireless RF transmission environments
• Compact SMD3030-6P surface mount packaging

Applications

• Wireless communication modules
• RF front-end signal processing
• Mobile device transceivers

Procurement Notes

Verify the manufacturer designation as TAI-SAW TECHNOLOGY CO., LTD. or TST when sourcing. Confirm the package type matches the 6-SMD, No Lead specification. Ensure the center frequency requirement aligns with 947.5 MHz. Check that the operating temperature range covers the intended environmental conditions. Validate electrical parameters against official datasheets prior to integration.

Selection Notes

Select this component for applications requiring precise filtering at 947.5 MHz. Consider the 3.3 dB insertion loss impact on system gain. Evaluate the 25 MHz bandwidth against signal requirements. Ensure PCB layout accommodates the SMD3030-6P footprint. Verify thermal management capabilities within the -30°C to +85°C range.

Part Context

This SAW filter belongs to the category of passive RF components used in modern telecommunications. It serves as a critical element for frequency selection and interference rejection in radio frequency circuits. The technology relies on acoustic wave propagation across piezoelectric substrates to achieve sharp frequency response characteristics suitable for compact electronic devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching center frequency, bandwidth, insertion loss, and package dimensions. Consult manufacturer engineering support for validated alternatives if direct replacement is necessary.