Import 300w 400~430mhz Rf Drop In Circulators — Buy in wholesale FOB from Supplier in China

The UIYDC3538A400T430 is a 300W drop-in circulator operating from 400 to 430 MHz, designed for systems requiring compact surface-mount integration with minimal insertion loss. It achieves 0.3 dB insertion loss, 23 dB isolation, and a 1.2:1 VSWR across a 40 percent bandwidth, with equal forward and reverse power handling of 300 W. The unit measures 35 by 38 by 11 mm and uses TAB connectors, suited to PCB-mounted RF chains where space and electrical performance are tightly constrained.

Drop-in circulators in this class typically employ ferrite material within a stripline cavity, with temperature-stabilised magnets to maintain gyromagnetic resonance across the stated -30 to +70 degrees Celsius operating range. The 40 percent fractional bandwidth is wider than many narrowband cavity designs, indicating a compromise between bandwidth and isolation that suits multi-channel or frequency-agile transmitters. Standard industry practice for this power level and frequency range includes silver-plated housings and alumina substrates for thermal management and low passive intermodulation.

Buyers integrating this circulator should confirm PCB footprint compatibility with the 35 by 38 mm outline and TAB pin configuration, as mechanical tolerances vary between drop-in and solder-down variants. Applications include land-mobile radio base stations, military VHF communications, and broadcast transmitters where transmitter-to-antenna isolation protects power amplifiers from reflected energy. For trade terms, volume, packaging, and lead time, direct enquiry to Uiy Inc. is necessary, as these are not stated in the listing.

Uiy Inc. is located at No. 8, Lane 1, Xintun East Zone, Longgang District, Shenzhen, 518172, Guangdong, China, placing it within the Pearl River Delta electronics manufacturing corridor. The company holds a Harbor trust tier on the platform, though its response rate is recorded at 0.00 percent with an average response time of zero hours, suggesting either a new listing or inactive enquiry management. No further profile details, such as year established, headcount, revenue, or certifications, are provided in the source data.

The listing presents a single RF circulator model with explicit electrical and mechanical parameters, which indicates specialisation in passive ferrite components rather than broad catalogue distribution. Buyers should note that the absence of response history means direct communication channels, technical support capability, and sample availability remain unverified. Due diligence through a video factory audit or third-party verification is advisable before committing to volume orders.