The 4100, 4200, 4300, and 4400 series high-frequency, low-pass EMI/RFI filters are available in three mounting choices: solder-in, press-in and bushing. Some of the features and benefits of this series include small size, high performance, elimination of EMI and bulkhead space savings. Common applications of the 4100, 4200, 4300, and 4400 series include: telecommunications, CATV, telemetry, radar, amplifiers, microwaves, and RF switches.