ASR390E-T

Overview

The ASR390E-T is a Surface Acoustic Wave (SAW) resonator manufactured by Abracon LLC, designed for single-port surface mount applications. It operates at a nominal frequency of 390 MHz and features an 8-SMD, no-lead package with dimensions of 5.00mm x 5.00mm x 1.50mm. The component supports a wide operating temperature range from -45°C to +85°C and exhibits a series resistance of 22Ω. This device is RoHS compliant and suitable for industrial-grade RF circuits requiring stable performance in compact form factors.

Feature Summary

• Utilizes Surface Acoustic Wave technology for efficient signal filtering
• Designed for high-density surface mount assembly processes
• Compliant with RoHS environmental standards

Applications

• Industrial wireless sensor networks
• Sub-GHz low-power wireless data transmission systems
• ISM band radio equipment front ends

Procurement Notes

Verify current availability status as the ASR390E-T is listed as obsolete or end-of-life by the manufacturer. Confirm if alternative stock exists through authorized distributors or if design-in alternatives are required. Check specific packaging configurations and lead times for remaining inventory before finalizing procurement plans.

Selection Notes

Select this component only if the specific 390 MHz frequency point aligns with regulatory ISM bands for the target region. Ensure the PCB layout accommodates the 8-SMD footprint and thermal requirements for the -45°C to +85°C range. Consider that obsolescence may impact long-term supply chain stability for production runs.

Part Context

This SAW resonator belongs to Abracon's ASR series, which focuses on cost-effective solutions for RF filtering applications. The series typically offers standard footprints to facilitate easy integration into existing designs. The ASR390E-T specifically targets the 390 MHz niche within the Sub-GHz spectrum, distinct from more common 433 MHz or 315 MHz variants.

Replacement Considerations

As the ASR390E-T is marked as obsolete, direct substitutes must be sourced carefully. Potential replacements include other 390 MHz SAW resonators from different manufacturers or adjacent frequencies like 390.00 MHz variants from Abracon such as the ASR390E, provided pin compatibility and electrical parameters match the original design requirements.