Flat Cable EMI Suppression Cores (2631163851)
31 FULL FLAT CABLE CORE
31 Material®
Suppression Components
Cable Component
Printer Friendly Data Sheet
Catalog Drawing
3D Model
Check Stock
Part Number: 2631163851
31 FULL FLAT CABLE CORE
Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
Flat cable suppression core can accommodate multi-conductors flat cables, in widths from 12.7 mm (0.500) up to 77 mm (3.0). These flat cable cores are available in two ferrite material grades to reduce conducted EMI from 1 MHz to hundreds of MHz.
Our Expanded Cable & Suppressor Kit (part number 0199000005) contains a selection of these flat cable cores and clips.
Flat Cable Cores are available in selected sizes in the Flex Circuit & Ribbon Cable Core Kit (part number 0199000038).
Assembly clips are available for most of the split flat cable cores. See section Flat Cable Cores Assembly clips.
Weight: 51 (g)
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 38.1 | ±1.00 | 1.5 | _ |
| B | 26.65 | ±0.75 | 1.05 | _ |
| C | 25.4 | ±0.75 | 1 | _ |
| D | 12.05 | ±0.40 | 0.475 | _ |
| E | 1.9 | ±0.40 | 0.075 | _ |
| Cable Information | |||
| Max Diameter | Max Dimension | Solid Equivalent | Flat Cable Cores |
| 0 0 | 25.90 x 1.50 | _ | - |
Chart Legend
+ Test frequency
•For assembly clips see Flat Cable Cores Assembly Clips
| Typical Impedance (Ω) | |
| 1 MHz | 32 |
| 5 MHz | 61 |
| 10 MHz+ | 74 |
| 25 MHz+ | 112 |
| 100 MHz+ | 205 |
| 250 MHz | 343 |
Flat cable suppression cores, split or single cores, are controlled for impedances only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.
Centered, single turn impedance tests for the 31 and 43 material parts are performed on the E4990A Impedance Analyzer. All tests are made with the shortest practical wire length.
| Typical Impendance (Ω) | |
| 1 MHz | 20 |
| 5 MHz | 52 |
| 10 MHz+ | 68 |
| 25 MHz+ | 112 |
| 100 MHz+ | 240 |
| 250 MHz | 440 |
A MnZn 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 MnZn 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
Printer Friendly Data Sheet - Download as pdf file