Mini-Circuits 1:4 CORE & WIRE Transformer, 500 - 2500 MHz, 50Ω TC4-25X+

The TC4-25X+ is a surface mount RF transformer with a 1:4 impedance ratio, designed for 50Ω systems across 500 to 2500 MHz. It features a balanced transmission line with a secondary center tap and is packaged in an AT1521 case measuring 3.81 x 3.81 x 0.33 mm, weighing 0.15 grams. Insertion loss ranges from 1.0 dB at 750-1200 MHz to 1.14 dB at 2500 MHz, with input return loss exceeding 8.96 dB across the band. The operating temperature range is -40°C to +85°C, with a maximum RF power of 0.25 W and DC current limit of 30 mA. The device is aqueous washable and includes an orientation dot marking pin 1.