ASR418S2-T

Overview

The Abracon ASR418S2-T is a single-port Surface Acoustic Wave (SAW) resonator designed for RF applications. It operates at a nominal center frequency of 418 MHz with a frequency tolerance of ±75 kHz. The component features a ceramic seam-sealed package in a 4-SMD, no lead configuration, measuring 5.0 mm by 3.5 mm with a maximum height of 1.4 mm. It exhibits an impedance of 23 Ohms and supports an operating temperature range from -40°C to +85°C. This surface-mount device is RoHS compliant and suitable for industrial-grade environments requiring high reliability.

Feature Summary

• Utilizes a ceramic seam-sealed package construction to ensure high reliability and environmental protection against dust and moisture.
• Engineered as a single-port SAW resonator optimized for specific RF frequency bands without requiring external tuning components.
• Designed for direct surface-mount integration into PCB layouts using standard SMT processes.

Applications

• Industrial remote control systems
• Low-power wireless communication devices
• RF transmitter modules

Procurement Notes

Verify the complete part number including the suffix when ordering, as it may indicate specific tape and reel packaging configurations. Confirm that the procurement channel provides official documentation matching the manufacturer's specifications. Ensure the received components match the physical dimensions and marking codes specified in the datasheet to avoid counterfeit or incorrect substitutions during assembly.

Selection Notes

Select this component for designs requiring a stable 418 MHz reference with tight frequency tolerance. The 23 Ohm impedance requires appropriate matching network design within the RF circuit. Consider the -40°C to +85°C operating range for industrial applications. The single-port topology simplifies circuit design compared to dual-port filters but may require careful layout to minimize insertion loss effects.

Part Context

This part belongs to Abracon's line of surface-mount SAW resonators. It serves as a passive frequency-determining element in RF circuits. Unlike oscillators, it does not generate signals internally but provides resonance for active circuits. The series offers various frequencies tailored for regional ISM bands and proprietary wireless protocols.

Replacement Considerations

Direct substitutes must match the 418 MHz frequency, ±75 kHz tolerance, and 23 Ohm impedance. Verify that alternative parts support the same 4-SMD package dimensions and seam-sealed construction. Check if competitor components offer compatible temperature ranges and RoHS compliance for seamless integration into existing manufacturing processes.