Butterworth Band Pass filters offer a monotonic pass band and stop band response. Available packages include PCB, radial RF pins, SMT, SMA and BNC connector zed cases. These are available for low frequency, 10-20kHz RFID applications, RF and Microwave applications including ADC and DAC low distortion testing, data acquisition, receivers and transmitters. Specify any center frequency from 500Hz to 1GHz.