5.0 MHz 5-Pole Bessel Low Pass Filter 50 Ohm BNC In/Out Enclosure Housing

5.0 MHz 5-Pole Bessel Low Pass Filter 50 Ohm BNC In/Out Enclosure Housing

This is a 5.0 MHz 5-pole Bessel low pass filter in a rugged metal enclosure, with 50-ohm BNC connectors on both the input and output ports. The filter is clearly labeled on the bottom panel and designed for use in RF and signal processing applications where a flat group delay and linear phase response across the passband are required.

Specifications & What's Included

• Filter type: Bessel (maximally flat group delay)
• Filter topology: Low Pass
• Number of poles: 5
• Cutoff frequency: 5.0 MHz
• Input impedance: 50 Ohm
• Output impedance: 50 Ohm
• Input connector: BNC (panel-mount, labeled IN)
• Output connector: BNC (panel-mount, labeled OUT)
• Enclosure: Teal painted metal box with flange/foot mounting tabs
• Mounting: Flange-mount feet on both ends for bench or panel mounting
• Manufacturer: Not identified (no brand markings on unit or label)

Applications

Bessel low pass filters are used in RF, analog, and digital signal processing systems where preserving the shape of the signal waveform through the passband is more important than a sharp roll-off at the cutoff frequency. Unlike Chebyshev or Butterworth designs, a Bessel filter's maximally flat group delay minimizes pulse distortion and ringing, making it well suited for pulse transmission, oscilloscope calibration setups, data acquisition systems, and time-domain measurement applications. A 5 MHz cutoff at 50 ohms is a common requirement in baseband RF test benches and legacy instrumentation chains. The BNC connectors and enclosed metal housing make this unit straightforward to integrate into bench setups or to use inline between signal sources and measurement instruments.