TC0269A

Overview

The TC0269A is a Surface Acoustic Wave (SAW) resonator manufactured by TST. It operates at a center frequency of 433.92 MHz with a tolerance of ±75 kHz. The device features a 50 Ohm impedance and is housed in an SM5035-4PAD surface-mount package measuring 5.0 x 3.5 mm. It supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Utilizes Surface Acoustic Wave technology for stable resonance
• Designed for surface-mount assembly via four-pad configuration
• Optimized for 433.92 MHz ISM band applications

Applications

• Wireless remote control systems
• Automotive key fobs
• TPMS sensors
• Short-range wireless communication devices

Procurement Notes

Verify the specific suffix or tape-and-reel designation against the official TST datasheet to ensure compatibility with automated pick-and-place equipment. Confirm that the SM5035-4PAD footprint matches the target PCB layout dimensions precisely. Cross-reference the ±75 kHz frequency tolerance requirement with the system design specifications to ensure signal integrity within the intended application environment.

Selection Notes

Select this component when a 433.92 MHz reference is required for low-cost, compact wireless implementations. The 50 Ohm impedance aligns with standard RF transmission lines. Consider the -40°C to +85°C range for automotive or industrial outdoor deployments. Ensure the surface-mount profile fits within the allowable height constraints of the final enclosure design.

Part Context

This part belongs to TST's TC series of SAW resonators, which are engineered for cost-effective mass production in consumer electronics. The series targets the ISM bands commonly used for short-range data transmission and control signals. These components serve as fundamental timing references in simple oscillator circuits where high stability is not the primary constraint.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameters carefully if considering alternative manufacturers. Direct cross-referencing requires independent validation of the 433.92 MHz frequency and ±75 kHz tolerance against the new candidate component.