Mini-Circuits BLGE4-252R+ is a miniature ceramic RF balun transformer with an impedance ratio (secondary/primary) of 1:4. This model covers the 2400 to 2500 MHz frequency band and has been performance optimized for use in Bluetooth, Zigbee and low band Wi-Fi applications. This model provides low insertion loss, low amplitude unbalance, and RF input power handling up to 2W. Fabricated using LTCC technology, it comes housed in a tiny package (0.08 x 0.05 x 0.04”) and is suitable for high-volume production.