DATA SHEET
Supersedes data of September 2004 2008 Sep 01
FERROXCUBE
TX36/23/15
Soft Ferrites
2008 Sep 01 1725
Ferroxcube
Soft Ferrites TX36/23/15
RING CORES (TOROIDS)
Effective core parameters
Coating
The cores are coated with epoxy, flame retardant in
accordance with “UL 94V-0”; UL file number E 228348.
The colour is white.
Maximum operating temperature is 200 °C.
Isolation voltage
DC isolation voltage: 2000 V.
Contacts are applied on the edge of the ring core, which is
also the critical point for the winding operation.
SYMBOL PARAMETER VALUE UNIT
Σ(I/A) core factor (C1) 0.919 mm−1
Veeffective volume 8740 mm3
Ieeffective length 89.7 mm
Aeeffective area 97.5 mm2
m mass of core ≈ 40 g
CBW395
coating EPOXY
( 0.12)
36.25 ± 0.9
22.75 ± 0.7
15.4
± 0.6
Fig.1 TX36/23/15 ring core.
Dimensions in mm.
Ring core data
GRADE AL
(nH) µiTYPE NUMBER
4C65 170 ± 25% ≈ 125 TX36/23/15-4C65
4A11 940 ± 25% ≈ 700(1)
1. Old permeability specification maintained.
TX36/23/15-4A11
3R1(2)
2. Due to the rectangular BH-loop of 3R1, inductance values strongly depend on the magnetic state of the ring core
and measuring conditions. Therefore no AL value is specified. For the application in magnetic amplifiers AL is not
a critical parameter.
−≈ 800 TX36/23/15-3R1
3S4 2285 ± 25% ≈ 1700 TX36/23/15-3S4
3F3 2420 ± 25% ≈ 1800 TX36/23/15-3F3
3C90 3090 ± 20% ≈ 2300 TX36/23/15-3C90
3C81 3670 ± 20% ≈ 2700 TX36/23/15-3C81
3C11 5800 ± 25% ≈ 4300 TX36/23/15-3C11
3E25 7390 ± 25% ≈ 5500 TX36/23/15-3E25
3E27 6800 ± 20% ≈ 5000 TX36/23/15-3E27
3E5 11400 ± 30% ≈ 8500 TX36/23/15-3E5
3E6 13600 ± 30% ≈ 10400 TX36/23/15-3E6
2008 Sep 01 1726
Ferroxcube
Soft Ferrites TX36/23/15
WARNING
Do not use 3R1 cores close to their mechanical resonant frequency. For more information refer to “3R1” material
specification in this data handbook.
Properties of cores under power conditions
GRADE
B (mT) at CORE LOSS (W) at
H=250A/m;
f = 25 kHz;
T = 100 °C
f = 25 kHz;
=200mT;
T = 100 °C
f=100kHz;
= 100 mT;
T = 100 °C
f = 400 kHz;
=50mT;
T=100°C
3C81 ≥320 ≤ 1.7 −−
3C90 ≥320 ≤ 0.96 ≤ 0.96 −
3F3 ≥320 −≤0.95 ≤1.7
B
ˆB
ˆB
ˆ
2008 Sep 01 1727
Ferroxcube
Soft Ferrites TX36/23/15
DATA SHEET STATUS DEFINITIONS
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
DATA SHEET
STATUS
PRODUCT
STATUS DEFINITIONS
Preliminary
specification
Development This data sheet contains preliminary data. Ferroxcube reserves the right to
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.
STATUS INDICATION DEFINITION
Prototype
These are products that have been made as development samples for the purposes of
technical evaluation only. The data for these types is provisional and is subject to
change.
Design-in These products are recommended for new designs.
Preferred These products are recommended for use in current designs and are available via our
sales channels.
Support These products are not recommended for new designs and may not be available
through all of our sales channels. Customers are advised to check for availability.
