Click here for product information pb rohs_mat rohs_comp  msds

EFD Cores (8995202021)

Part Number: 8995202021
95 EFD CORE CORE
95 Material
Inductive Components
Closed Magnetic Circuit
Printer Friendly Data Sheet
Check Stock

Part Number: 8995202021

95 EFD CORE CORE

EFD (Economical Flat Design) cores have been designed to maximize volume in a low profile geometry. EFD cores allow maximum throughput power density with reasonably low mass for board level installation.

EFD cores can be supplied with the center post gapped to a mechanical dimension or an ALvalue.

Catalog Drawing
3D Model

Weight indicated is per pair or set.

Weight: 7 (g)

Dimmmmm tolnominal inchinch misc.
A20± 0.550.787_
B10± 0.250.394_
C6.65± 0.200.262_
D7.7± 0.250.303_
E15.4± 0.500.606_
F8.9± 0.300.35_
K3.6± 0.150.142_

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)1400 ±25%
Ae(cm2)0.31
Σl/A(cm-1)15.6
le(cm)4.74
Ve(cm3)1.44
Amin(cm2)0.29

AL value is measured at 1 kHz, B < 10 gauss.

A low loss MnZn ferrite material for power applications up to 200 kHz with low temperature variation. New type of 95 material is a low loss power material which features less power loss variation over temperature (25-100°C) at moderate flux densities for operation below 200 kHz.

Available in 95 material:

Pot Cores

RM

PQ

EFD

EP

95 Material Characteristics
Property Unit Symbol Value
Initial Permeability @ B < 10 gauss µi 3000
Flux Density @ Field Strength Gauss
Oersted
B
H
5000
5
Residual Flux Density Gauss Br 1200
Coercive Force Oersted Hc 0.18
Loss Factor @ Frequency 10 -6
MHz
Tan δ/ µi 2.5
0.1
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 0.6
Curie Temperature °C Tc >220
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

Specific Heat
0.25 cal/g/°C
Thermal Conductivity
3.5 - 4.5 mW/cm-°C
Coefficient of Linear Expansion
8 - 10x10-6/°C
Tensile Strength
4.9 kgf/mm2
Compressive Strength
42 kgf/mm2
Young's Modulus
15x103 kgf/mm2
Hardness (Knoop)
650
Specific Gravity
≈4.7 g/cm3
The above quoted properties are typical for Fair-Rite MnZn and NiZn ferrites.


Storage and Operating Temperature
Printer Friendly Data Sheet - Download as pdf file

Go to Top