Pot Cores (5678261721)
78 POT CORE SET
78 Material
Inductive Components
Closed Magnetic Circuit
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Part Number: 5678261721
78 POT CORE SET
Pot cores have found application in all types of inductive devices. The core configuration provides a high degree of self-shielding. It also facilitates gapping to enhance utility for a variety of magnetic designs.
Pot cores can be supplied with the center post gapped to a mechanical dimension or an AL value.
Weight indicated is per pair or set.
Weight: 20.000 (g)
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 25.5 | ±0.50 | 1.004 | _ |
| B | 8.05 | ±0.15 | 0.317 | _ |
| C | 17.2 | ±0.50 | 0.677 | _ |
| D | 5.65 | ±0.20 | 0.222 | _ |
| E | 21.6 | ±0.40 | 0.85 | _ |
| F | 11.1 | ±0.30 | 0.437 | _ |
| G | 4.15 | ±0.50 | 0.163 | _ |
| H | 5.4 | ±0.25 | 0.213 | _ |
Chart Legend
Σl/A : Core Constant, le : Effective Path Length, Ae : Effective Cross-Sectional Area, Ve : Effective Core Volume
AL : Inductance Factor 
Explanation of Part Numbers: Digits 1 & 2 = product class and 3 & 4 = material grade.
| Electrical Properties | |
| AL(nH) | 4800 ±25% |
| Ae(cm2) | 0.867 |
| Σl/A(cm-1) | 4.4 |
| le(cm) | 3.8 |
| Ve(cm3) | 3.31 |
| Amin(cm2) | 0.74 |
AL value is measured at 1 kHz, B < 10 gauss.
A MnZn ferrite specifically designed for power applications for frequencies up to 200 kHz and low loss inductive applications to 500 kHz.
Available in 78 material:
RFID Rods
Toroids
Mated Parts
78 Material Characteristics
| Property | Unit | Symbol | Value |
| Initial Permeability @ B < 10 gauss | µi | 2300 | |
| Flux Density @ Field Strength | Gauss Oersted |
B H |
4800 5 |
| Residual Flux Density | Gauss | Br | 1500 |
| Coercive Force | Oersted | Hc | 0.20 |
| Loss Factor @ Frequency | 10 -6 MHz |
Tan δ/ µi | 3 0.1 |
| Temperature Coefficient of Initial Permeability (20 -70°C) | %/°C | 1.0 | |
| Curie Temperature | °C | Tc | >200 |
| Resistivity | ohm-cm | ρ | 200 |
**** 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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