ADFC21-5390.00-A-T is an SMD 5.39 GHz dielectric band pass filter designed for high-frequency wireless signal filtering. The filter features a passband width from 4.9 GHz to 5.875 GHz with a maximum insertion loss of 2.0 dB across the passband and excellent out-of-band attenuation of 30 dB at 3.5 GHz. It is housed in a compact 2.0 × 1.25 × 0.95 mm SMD package with 50 O source and load impedance, operating reliably across -40°C to +85°C. The device is ideal for WLAN, DSTV, and cordless phone applications where selective frequency filtering and minimal signal loss are critical requirements.