Learn More about Ferrite Pot Cores
                     Learn More about Ferrite 
Pot Cores
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Overview
Pot cores have found use in a wide range of inductive devices. The core configuration 
provides excellent self-shielding. It also allows for gapping, which improves the utility of 
a variety of magnetic designs. 
The centre post of pot cores can be gapped to a mechanical dimension or an AL value.
Industry standard PQ core sizes include: PQ20/16, PQ26/20, PQ26/25, PQ20/20, 
PQ32/20, PQ32/30, PQ35/35, PQ40/40, PQ50/50
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Chart Legend
Electrical PropertiesAL(nH)2100 ±25%Ae(cm2)0.251Σl/A(cm-1)7.9le(cm)1.98Ve(cm3)0.495Amin(cm2)0.198
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) 2100 ±25%
Ae(cm2) 0.251
Σl/A(cm-1) 7.9
le(cm) 1.98
Ve(cm3) 0.495
Amin(cm2) 0.198
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Material Characteristics
Property Unit Symbol Value
Initial Permeability @ B < 10 gauss µi 3000
Gauss B 5000
Flux Density @ Field Strength
Oersted H 5
Residual Flux Density Gauss Br 1200
Coercive Force Oersted Hc 0.18
10 -6 2.5
Loss Factor @ Frequency Tan δ/ µi
MHz 0.1
Temperature Coefficient of Initial 
%/°C 0.6
Permeability (20 -70°C)
Curie Temperature °C Tc >220
200
Resistivity Ohm-cm ρ
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FEATURES
● Low Losses ● Excellent Winding Capability
● Low Loss Over Wide Temperature ● Low Cost Bobbin and Winding
Range ● Simple Assembly
● Good Stability Across Load ● Good Heat Dissipation
Conditions
● Self Shielded geometry isolates 
winding from stray magnetic fields
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APPLICATIONS
● Converter Transformers
● Inverter Transformers
● Differential Mode Inductors
● Power Inductors
● Power Transformers
● Telecom Inductors
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Contact
Us
Phone Number
11493988
Email Address
[email protected]
Website
www.cosmoferrites.com
www.cosmoferrites.com