TA1638A

Overview

The TST TA1638A is a Surface Acoustic Wave (SAW) filter designed for RF applications. It operates at a center frequency of 421.9 MHz with a 3dB bandwidth of 2 MHz. The component features a 50Ω impedance and an insertion loss of 3dB. It is housed in a compact 6-SMD, No Lead package measuring 3.00mm x 3.00mm with a maximum height of 1.40mm.

Feature Summary

• Surface acoustic wave technology for RF signal filtering
• Compact surface mount design suitable for space-constrained PCBs
• Optimized for wireless communication frequency bands

Applications

• Wireless communication systems
• RF front-end modules
• Base station equipment

Procurement Notes

Verify the specific datasheet version and customer part number approval status before procurement. Confirm that the 6-SMD package dimensions and lead-free specifications match the target assembly requirements. Ensure the operating temperature range aligns with the final product environment to guarantee performance stability.

Selection Notes

Select this component when a narrow 2 MHz bandwidth is required at 421.9 MHz. The low profile 1.40mm height facilitates use in devices with strict thickness constraints. Consider the 3dB insertion loss as a key factor for system power budget calculations and signal integrity planning.

Part Context

Tai-Saw Technology (TST) specializes in SAW components for mobile and wireless markets. The TA1638A belongs to their RF SAW filter series, engineered for high stability and reliability in consumer electronics and telecommunications infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative suppliers by matching the 421.9 MHz center frequency, 2 MHz bandwidth, and 6-SMD package footprint.