SIR433M920S042

Overview

The SIR433M920S042 is a Surface Acoustic Wave (SAW) resonator manufactured by NextGen Components, designed for operation at a center frequency of 433.92 MHz. This component features a frequency tolerance of ±75 kHz and an impedance of 50 Ohms. It is housed in a compact 4-SMD, No Lead package with physical dimensions of 5.00 mm length, 3.50 mm width, and 1.50 mm height. The device supports surface mount technology and operates within a temperature range of -40°C to +85°C, making it suitable for integration into various electronic circuits requiring precise RF filtering.

Feature Summary

• Utilizes Surface Acoustic Wave technology for stable resonance
• Designed for surface mount assembly on printed circuit boards
• Provides specific impedance matching for RF signal paths

Applications

• ISM band wireless communication devices
• Remote keyless entry systems
• Short-range radio transmission modules

Procurement Notes

Verify the complete part number including the suffix to ensure correct frequency and packaging specifications. Confirm that the required operating temperature range aligns with the specified -40°C to +85°C limits. Ensure compatibility with surface mount reflow processes given the no-lead SMD package type. Check for any specific handling requirements associated with SAW components during assembly.

Selection Notes

Select this component when a fixed frequency of 433.92 MHz is required for ISM band applications. Consider the ±75 kHz tolerance if tight frequency stability is necessary for the system. Evaluate the 4-SMD footprint against available PCB space constraints. Compare performance characteristics against other SAW resonators in the same series if alternative frequencies are needed.

Part Context

This part belongs to the SIR series of SAW resonators from NextGen Components. It shares similar packaging and operational principles with other models in the lineup, such as the SIR433M420S042, which operates at 433.42 MHz. The series is characterized by its use in low-cost, high-volume consumer electronics requiring reliable RF filtering solutions.

Replacement Considerations

Direct substitutes include other 433.92 MHz SAW resonators with compatible 4-SMD packages and similar electrical tolerances. Verify that any replacement maintains the 50 Ohm impedance and -40°C to +85°C operating range. Cross-reference mechanical dimensions to ensure fit within the existing design.