Round Cable Snap-It™ (0431164281)
31 ROUND CABLE CORE ASSEMBLY
31 Material®
Suppression Components
Cable Component
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Part Number: 0431164281
31 ROUND CABLE CORE ASSEMBLY
Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
Round cable snap-it™ can easily accommodate round cables or bundled wires with diameters from 2.5 mm (0.100) to 25.4 mm (1.000). These assemblies are available in four ferrite material classes to suppress differential or common-mode conducted EMI from 1 MHz into the GHz region. The polypropylene cases are meeting the RoHS restrictions of hazardous substances and have a flammability rating of UL 94 V-0.
Many of the snap-it™ parts have round core equivalents. See Round Cable EMI Suppression Cores.
Round Cable Snap-It™ Kits are available for each of the four suppression materials. 31 Snap-It™ Kit (0199000030), 43 Snap-It™ Kit (0199000031), 46 Core and Snap-It™ Kit (0199000032) and 61 Snap-It™ Kit (0199000033).
The B dimension is the core inside diameter.
Weight: 26 (g)
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 20 | +/- 1.5 | 0.787 | _ |
| B | 6.30 | _ | 0.248 min | _ |
| C | 39.50 | +/- 2.0 | 1.555 | _ |
| D | 9.8 | +/- .500 | 0.386 | _ |
| Cable Information | |||
| Max Diameter | Max Dimension | Solid Equivalent | Flat Cable Cores |
| 6.3 0.25 | _ | 2631540002 | - |
Chart Legend
+ Test frequency
•For solid cable cores, see Round Cable EMI Suppression Cores
| Typical Impedance (Ω) | |
| 1 MHz | 20 |
| 5 MHz | 75 |
| 10 MHz+ | 104 |
| 25 MHz+ | 170 |
| 100 MHz+ | 315 |
| 250 MHz | 380 |
Round cable snap-it™ assemblies are controlled for impedances only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.
Single turn impedance tests for 31, 43 and 46 material cores are performed on the E4991A/HP4291B Impedance Analyzer. The 61 material parts are tested on the E4991A / HP4291B Impedance Analyzer and 75 material parts are tested on the E4990A Impedance Analyzer. Cores are tested with the shortest practical wire length.
| Typical Impendance (Ω) | |
| 1 MHz | 28 |
| 5 MHz | 83 |
| 10 MHz+ | 105 |
| 25 MHz+ | 180 |
| 100 MHz+ | 310 |
| 250 MHz | 240 |
A MZn ferrite designed specifically for EMI suppression applications from as low as 1 MHz up to 500 MHz. This material does not have the dimensional resonance limitations associated with conventional MZn ferrite materials.
Available in 31 Material®:
Round Cable EMI Suppression Cores
Round Cable Snap-Its
Flat Cable EMI Suppression Cores
Flat Cable Snap-Its
31 Material® Characteristics
| Property | Unit | Symbol | Value |
| Initial Permeability@B < 10 gauss | µi | 1500 | |
| Flux Density @ Field Strength | Gauss Oersted |
B H |
3600 5 |
| Residual Flux Density | Gauss | Br | 2600 |
| Coercive Force | Oersted | Hc | 0.34 |
| Loss Factor @ Frequency | 10 -6 MHz |
Tan δ/ µi | 20 0.1 |
| Temperature Coefficient of Initial Permeability (20 -70°C) | %/°C | 1.3 | |
| Curie Temperature | °C | Tc | >130 |
| Resistivity | Ω cm | ρ | 3000 |
**** Characteristic curves are measured on standard Toroids (18/10/6 mm) at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.
Material Safety Data Sheet (MSDS)
Click here to download Complex Permeability vs. Frequency (CSV)
Ferrite Material Constants
Storage and Operating Temperature
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