2.8 GHz Surface Mount Bandpass Filter www.knowlescapacitors.com B028RF2S SPECIFICATIONS* DESCRIPTION Frequency One of DLIs surface mountable catalog Parameter Min Typ. Max Range (GHz) bandpass filters. This filter utilizes DLIs low loss temperature stable materials which offer small Insertion Loss (dB) 2.0 3.5 size and minimal performance variation over 2.0 - 4.0 temperature. The catalog BPFs are offered in a Return Loss (dB) 10 18 variety of frequency bands, which offers a drop Low Side Rejection (dB) DC - 1.25 40 45 in solution with highly repeatable performance. High Side Rejection (dB) 4.75 - 6.0 35 40 FEATURES Small Size CW Input Power (W)** 2.0 - 4.0 15 Fully Shielded Component - Solder Surface Mount Package 5 Moisture Sensitivity Level: MSL1 0.460 x 0.460x 0.113 in Frequency Stable over Temperature Size (L x W x H) 11.68 x 11.68 x 2.87 mm Operating & Storage Temp: -55C to +125C Characteristic Impedance: 50 *Electrical specifications based on typical probed performance at room temperature. Insertion loss shall vary 0.5dB over temperature. **Power rating assumes the component will be mounted to a PCB with good thermally conducting ground vias as outlined in the recommended PCB layout that are connected to an adequate heat sink. Max power is based on 125C base temperature. Typical Measured Performance 2777 Route 20 East, Cazenovia, NY 13035 Ph.: (315)655-8710 KCCSales knowles.com Aug 2021 2.8 GHz Surface Mount Bandpass Filter www.knowlescapacitors.com B028RF2S Physical Dimensions Units = inches Recommended PCB Layout 50 trace dimensions are application spe- cific. Ensure adequate grounding beneath the part. If the customer requests tape and reel packaging, the PN requested should be B028RF2S-T 2777 Route 20 East, Cazenovia, NY 13035 Ph.: (315)655-8710 KCCSales knowles.com Aug 2021