EPCOS B68451-A0080-X350 Fpc c302 Datasheet

Ferrite Polymer Composites
General Information
Ferrite polymer composites
Ferrite cores are familiar as brittle, rigid and bulky components for high-inductance coils and transformers. The performance of such ferrites depends very much on external influences such as temperature, pressure, electromagnetic fields and frequency.
FPC is a homogeneous mixture of ferrite powder and plastic with outstanding mechanical and magnetic properties. This rugged material can be processed into injection-molded parts or thin, flexible
film to open up innovative applications.
The new C351 film is suitable for high-temperature applications up to 200 °C and is UL 94-V0-listed.
It is also available with copper coatings of 35 to 75 µm and in various thicknesses from 0,2 to
0,4 mm. FPC film of materials C350 and C351 can also be supplied in self-adhesive versions.
FPC film is ideal for EMC applications, e.g. to shield coils against metals or absorb interference at
frequencies of 500 MHz and higher. It opens up many other applications, such as implementation
of low-profile coils for identification systems and electronic article surveillance in retailing and logistics, for sensors or contactless smart cards. FPC can also be used for compensation of deflection
yoke coils in TV picture tubes and computer monitors. This innovative material is also suitable as
spacing between ferrite cores – instead of air gaps or non-magnetic films – to suppress leakage
fields, for instance, or to adjust the biasing curve.
559 08/01
FPC
C302
C 302, C 351
Basic features
■
■
■
■
■
Composite material of polymer and ferrite for injection molded parts
Minor influence of temperature
High dc magnetic bias capability
Suitable for a wide frequency range
High electrical resistance
Technical benefits
■ High mechanical stability
■ Excellent dimensional stability
■ Manufacturing technique: injection molding
→ production of any core shape possible
■ Distributed air gap → low winding losses
Applications
■
■
■
■
Inductive proximity switches
Identification systems, e.g. immobilizer in automobiles
Non-contact power transmission
Resonance inductors for DC/DC converters
Core shapes on request
Physical properties
Material
Symbol
Unit
C302
Initial permeability; f = 1 MHz
µi
Flux density (near saturation)
H = 25 kA/m; f = 10 kHz
BS (25 °C)
mT
330
Remanent flux density
H = 25 kA/m; f = 10 kHz
Br (25 °C)
mT
15
Coercive field strength
H = 25 kA/m; f = 10 kHz
HC (25 °C)
A/m
770
Relative loss factor
tanδ/µi
17 ± 20 %
f=
1 MHz
f = 100 MHz
< 0,0004
< 0,03
Hysteresis material constant
ηB
10 –3/mT
< 0,25
Temperature coefficient
α = ∆µ/µ∆T
1/K
< 0,0002
kg/m3
3500
Density
ρ
Resistivity
Ωm
f = 10 kHz
f = 10 MHz
21
13
εr
Dielectric constant
280
100
f = 10 kHz
f = 10 MHz
Max. operating temperature
°C
Tmax
560 08/01
180
FPC Film
C 350, C 351
B68450 … B68452
Basic features
■ FPC is a composite material of polymer and ferrite
■ FPC film is a thin, mechanically flexible film
Technical benefits
■
■
■
■
■
■
■
■
■
■
Stable magnetic characteristics
Low weight: FPC film is 40% lower in density than ferrite
High mechanical strength
Shaping as required: customer-specific solutions possible
Economy: easy transport and storage,
simple, rationalized processing, low mounting volume
C351 film suitable for high-temperature applications (up to 200 °C)
Material C351 approved to UL 94-V0 (E 140 693)
Various film thickness (from 0,2 to 0,4 mm)
Self-adhesive versions
C351 film with optional copper coatings 35 to 75 µm thick
Applications
■ Implementation of low-profile coils, e.g. for
■
■
■
■
– identification systems
– security tags for electronic article surveillance
– sensors
– inductive reading of smart cards
Electromagnetic shielding of coils from metals to prevent interference
EMC: absorption of radiated emissions at frequencies ≥ 500 MHz
Compensation of deflection yokes to correct distortion at the corners of TV screens and monitors
Spacing between ferrite cores (as a substitute for air gaps or non-magnetic films) for
– suppression of the leakage field
– adjustment of the biasing curve
561 08/01
FPC Film
C 350, C 351
B68450 … B68452
Ordering details
The ordering codes are structured as follows:
1st group
2nd group
Design
Film thickness/width
3rd group
B68450: Film on reel
A: 0,2 mm
0080: 80 mm
Copper coating1) /material
X: Default letter
B: 0,3 mm
B68451: Film on reel,
self-adhesive
350
351
C: 0,4 mm
A: 35 µm
B68452: Film on reel,
copper-coated
B: 50 µm
(only in combination(with C351!)
C: 75 µm
Material
Thickness
(mm)
Extra features
Ordering code
C350
0,2
C351
0,2
C350
C350
0,2
0,2
self-adhesive
B68451-A0080-X350
B68451-A0080-X350
C351
C351
0,3
0,3
self-adhesive
B68451-B0080-X351
B68451-B0080-X351
C351
C351
0,2
0,2
copper-coated
B68452-A0080-X351
B68452-A0080-X351
B68450-A0080-X350
B68450-A0080-X351
FPC film is supplied in units of 50 m length.
1) Copper coating only in combination with C351.
562 08/01
351
FPC Film
C 350, C 351
B68450 … B68452
Physical properties (material values defined on 0,2 mm thick film)
Material
Initial
Symbol
permeability 1)
Unit
µi
C350
C351 3)
9 ± 20 %
9 ± 20 %
f = 1 MHz
Flux density (near saturation) 1)
H = 25 kA/m
f = 10 kHz
BS
mT
255
255
Remanent flux density 1)
H = 25 kA/m
f = 10 kHz
Br
mT
9
9
Coercive field strength 1)
H = 25 kA/m
f = 10 kHz
HC
A/m
600
600
Relative loss factor 1)
f = 10 MHz
f = 1 GHz
tanδ/µi
< 0,005
< 0,400
< 0,005
< 0,400
Hysteresis material constant
ηB
<2
<2
Temperature
coefficient1)
10 -3/mT
α = ∆µ/µ∆T
Density
Resistivity 1)
f = 1 kHz
f = 10 MHz
ρ
Dielectric constant 1)
f = 1 kHz
f = 10 MHz
εr
Dielectric strength
10 –5
< 5 · 10 –5
1/K
<5·
kg/m3
2930
2930
500
100
500
100
700
21
700
21
Ωm
kV/mm
1
0,8
Max. operating temperature
Tmax
°C
120
200
Tensile strength 2)
σZ
N/mm 2
1,5
2,5
%
25
25
N/mm 2
70
70
Tearing resistance 2)
Compressibility 2)
κ
1) T = 25 °C in accordance with IEC 51 (CO) 282
2) T = 23 °C and 50 % r.h.
3) UL 94, flame class V0 (listed E 140 693)
563 08/01
Herausgegeben von EPCOS AG
Marketing Kommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
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Published by EPCOS AG
Marketing Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
 EPCOS AG 2000. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited.
The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General Conditions for
the Supply of Products and Services of the Electrical and Electronics Industry recommended by the
ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
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