Snap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast Band

Name: Snap On Sleeve Choke - 1/2"/12.7mm cable -5/10/15 bead options, 1-300 MHz
Brand: Palomar Engineers
SKU: SNO75-1/2-5
Price: 64.75 USD
Availability: InStock

SNO75-1/2-5

$64.75

In stock

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Product Details

Brand: Palomar Engineers

MPN: SNO75-1/2-5, -10, -15

Country/Region of Manufacture: United States

Effective Frequency Range (MHz): 100 KHz - 30 Mhz

PEP Power Rating (watts): same as coax cable rating

Common Mode Attenuation (db): see graph

Estimated Insertion Loss (db): .025

Use for 1/2″ Cable – RG8, RG213, LMR-400, AC/DC and signal cable for suppression of common mode current (RFI) from 100 KHz to 30 MHz

Typical common mode suppression up to 22 dB depending upon the number of beads and frequency. Quite often 20 dB is considered the minimum effective reduction.

A minimum impedance of 500 ohms is needed for 50 ohm cable or 10 times the cable impedance for other cables to make a measurable difference in common mode current suppression.

The beads clamp to the cable and may be operated as is for indoor use. However, it is strongly suggested that they be covered to protect the plastic covers from weathering – use electrical tape for best results or heat shrink to ensure longer life. All kits come with instruction manual which covers assembly and application tips.

As you can see from the impedance vs frequency graph, you can very effectively increase the choking impedance by increasing the number of beads on the cable.

Snap On and Slip on Feed line chokes available in sizes to fix cables with outside diameters of 1/4", 3/8", 1/2", 3/4", 1" - check website for other size options.

Tech note: For RFI frequencies over 3.75 MHz, choose SNO31-1/2-5, 10 or 15 for improved common mode rejection (see graph for comparison)

Note: Ferrite beads may be hexagonal or square shape depending on inventory on hand at time of order.

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These RFI kits are specifically selected to cure most household computer device RFI problems. It contains ferrite toroids for AC or DC power supply protection and Snap On ferrite spli beads selected to eliminate RFI from 1 to 1000 Mhz. The beads are easy to use, don’t require modification of the protected equipment and work in almost all cases, even when plug-in filters fail.

Typical Installations


Ethernet Cable on F-240 Toroid – 7 turns	Ethernet Cable on FSB-1/2 – 3 turns for 9X Impedance	Ethernet Cable on FSB-1/4
AC Cable on F-240 Toroid – 6 turns	DSL Modem DC Power Supply on F114-43 Toroid – 5 Turns