FERROXCUBE

DATA SHEET

3C94
Material specification
Supersedes data of September 2004 2008 Sep 01
Ferroxcube

Material specification 3C94

3C94 SPECIFICATIONS

A low frequency power material for use in power and

general purpose transformers at frequencies up to 104
CBW236

0.3 MHz. handbook, halfpage 3C94

µ's ,µ''s
SYMBOL CONDITIONS VALUE UNIT
µ's
µi 25 °C; ≤10 kHz; 2300 ±20% 103
0.25 mT
µa 100 °C; 25 kHz; 5500 ±25% µ''s
200 mT
B 25 °C; 10 kHz; ≈ 470 mT
102
1200 A/m
100 °C; 10 kHz; ≈ 380
1200 A/m
PV 100 °C; 100 kHz; ≈ 50 kW/m 3
100 mT 10
10−1 1 10 102
100 °C; 100 kHz; ≈ 350 f (MHz)

200 mT
ρ DC, 25 °C ≈5 Ωm
TC ≥ 220 °C
density ≈ 4800 kg/m3 Fig.1 Complex permeability as
a function of frequency.

CBW237 CBW238
10000 500
handbook, halfpage 3C94 handbook, halfpage 25 °C
3C94
B 100 °C
µi
(mT)
8000 400

6000 300

4000 200

2000 100

0 0
−50 50 150 250 −25 0 25 50 150 250
T (°C) H (A/m)

Fig.2 Initial permeability as a

function of temperature. Fig.3 Typical B-H loops.

2008 Sep 01 121

Ferroxcube

Material specification 3C94

CBW239 CBW240
8000 104
handbook, halfpage 25 °C handbook, halfpage 3C94
100 °C 3C94
µa
µ rev
6000
103

4000

102
2000

0 10
0 100 200 300 400 1 10 102 103
^
B (mT) H (A/m)

Fig.4 Amplitude permeability as a Fig.5 Reversible permeability as a

function of peak flux density. function of magnetic field strength.

CBW241 CBW242
104 800
handbook, halfpage 3C94 handbook, halfpage 3C94
T = 100 °C
Pv
Pv ^
(kW/m3) f B
(kW/m3)
kH z
kHz

(kHz) (mT)
600
200
100

103

100 200
kHz

400
25

102
200 100
200

100 100
25 200
10 0
1 10 102 ^ 103 0 40 80 120
B (mT) T (°C)

Fig.7 Specific power loss for several

Fig.6 Specific power loss as a function of peak frequency/flux density combinations
flux density with frequency as a parameter. as a function of temperature.

2008 Sep 01 122

Ferroxcube

Material specification 3C94

DATA SHEET STATUS DEFINITIONS

DATA SHEET PRODUCT

DEFINITIONS
STATUS STATUS
Preliminary Development This data sheet contains preliminary data. Ferroxcube reserves the right to
specification make changes at any time without notice in order to improve design and
supply the best possible product.
Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right
to make changes at any time without notice in order to improve design and
supply the best possible product.

DISCLAIMER
Life support applications  These products are not designed for use in life support appliances, devices, or systems
where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube
for any damages resulting from such application.

PRODUCT STATUS DEFINITIONS

STATUS INDICATION DEFINITION

These are products that have been made as development samples for the purposes of
Prototype technical evaluation only. The data for these types is provisional and is subject to
change.
Design-in These products are recommended for new designs.
These products are recommended for use in current designs and are available via our
Preferred
sales channels.
These products are not recommended for new designs and may not be available
Support
through all of our sales channels. Customers are advised to check for availability.

2008 Sep 01 123