Raltron expands SAW filter lineup for GPS, Wi‑Fi and ISM bands

Raltron expanded its RSF Series surface acoustic wave filters for GPS, Wi‑Fi and ISM-band designs on July 23, 2026, targeting compact wireless devices that need better filtering in crowded RF environments. The company says the miniature chips are now in stock at DigiKey and are designed to help engineers reduce interference without sacrificing board space.

Why it matters: - Raltron's expanded RSF Series is aimed at crowded, space-limited wireless products where filtering performance can affect connectivity, coexistence and battery life. - The lineup targets GPS, 2.4 GHz Wi‑Fi and ISM-band applications across consumer, industrial and automotive devices. - The parts are designed for compact RF front ends in products that need smaller footprints and tighter interference control.

What happened: - Raltron announced an expanded portfolio of RSF Series surface acoustic wave filters on July 23, 2026. - The filters are optimized for GPS, Wi‑Fi and ISM band applications. - The company says the RSF family is intended for smartphones, tablets, wireless sensors, automotive systems, IoT devices, wearables, drones and smart appliances. - Product is in stock at DigiKey.

The details: - The RSF family offers low insertion loss, low amplitude ripple and high out-of-band rejection. - The filters come in miniature chip-scale packages. - Raltron says the parts can withstand higher power levels and can be tuned for specific customer requirements. - RSF GPS devices are available in chip-scale packages as small as 1.1 mm x 0.9 mm. - Raltron says that size supports integration into GNSS receivers, asset-tracking devices, automotive navigation modules and multi-constellation timing solutions. - The 2.4 GHz Wi‑Fi filters are designed to deliver high out-of-band rejection. - Raltron says that helps reduce interference from cellular, Bluetooth and other co-located radios. - The Wi‑Fi filters are aimed at access points, routers, gateways, smartphones and consumer electronics. - The ISM-band filters are designed for LoRa, SIGFOX and other low-power wide-area networks. - Raltron says the ISM parts help meet spectral mask requirements and improve coexistence with other sub-GHz radios. - The ISM filters are intended for battery-powered IoT nodes, smart meters, industrial sensors, building automation and remote-control systems. - More product information is available through GPS filters, Wi‑Fi filters and ISM band filters. - Sasha Wolloch, Raltron president, said the engineering team supports SAW filter selection and integration, including impedance matching, PCB layout guidance and coexistence strategies in multi-band RF front ends.

Between the lines: - The launch suggests Raltron is positioning the RSF line as a design-support product, not just a component sale. - The focus on chip-scale packaging and interference rejection points to demand from makers trying to pack more radios into less space. - The company is also signaling interest in both consumer wireless and industrial IoT markets, where RF coexistence is often a design constraint.

What's next: - Engineers can now source the expanded RSF lineup through DigiKey and Raltron's product pages. - Raltron says its support team will help customers accelerate time-to-market for multi-band RF designs. - The company is likely to push the RSF family into more compact wireless and IoT platforms as designers look for smaller filters with tighter performance targets.

The bottom line: - Raltron is broadening its SAW filter lineup to meet the RF filtering needs of smaller, more crowded wireless devices.