Ferrites and accessories
RM 6, RM 6 LP
Core and accessories
Series/Type:
B65807, B65808, B65821, B65659
Date:
March 2023
TDK Electronics AG 2023. Reproduction, publication and dissemination of this publication, enclosures hereto
and the information contained therein without TDK Electronics’ prior express consent is prohibited.
RM 6
Core and accessories
Individual parts
Part no.
Page
Adjusting screw
B65659
10
Core
B65807
3
Clamps
B65808
8
Coil former
B65808
5, 6, 7
Core
B65807
3
Insulating washer
B65808
8
Coil former for SMPS transf.
B65808
6
Coil former for
power applications
B65808
7
SMD coil former
B65821
9
Clamp
B65808
9
B65807P
11
Threaded sleeve (glued-in)
FRM0048-K
Example of an assembly set
Also available:
RM 6 low profile:
Core
Please read Cautions and warnings and
Important notes at the end of this document.
2
3/23
RM 6
Core
B65807
To IEC 63093-4
Core without center hole
for transformer applications
Delivery mode: sets
Magnetic characteristics (per set)
l/A
le
Ae
Amin
Ve
with
center hole
without
center hole
0.86
26.9
31.3
—
840
0.78
28.6
36.6
31
1050
mm–1
mm
mm2
mm2
mm3
5.1
g
Approx. weight (per set)
m
4.9
Gapped (AL values/air gaps examples)
Material
AL value
s
nH
approx.
mm
e
Ordering code 1)
-J without center hole
-N with threaded sleeve
-C with center hole
40 3%
0.80
27.4
B65807+0040A001
M33
633%
100 3%
0.60
0.38
43.2
68.5
B65807+0063A033
B65807+0100A033
N48
160 3%
250 3%
315 3%
400 3%
0.22
0.12
0.08
0.05
109
171
215
274
B65807+0160A048
B65807+0250A048
B65807+0315A048
B65807+0400A048
N41
250 3%
0.17
155
B65807J0250A041
K1
1) Replace the + by the code letter “J”,“N” or “C” for the required version. Standard version is “C”.
Please read Cautions and warnings and
Important notes at the end of this document.
3
3/23
RM 6
Core
B65807
Ungapped
Material
AL value
e
nH
PV
Ordering code
-C with center hole
-J without center hole
W/set
PC200
1100 +30/–20%
680
< 0.30 ( 50 mT, 1000 kHz, 100 °C) B65807J0000R608
< 0.40 ( 30 mT, 2000 kHz, 100 °C)
N48
2200 +30/–20% 1500
B65807C0000R048
N45
3500 +30/–20% 2180
B65807J0000R045
N30
4300 +30/–20% 2670
B65807J0000R030
T35
6200 +30/–20% 3860
B65807J0000R035
T38
8600 +40/–30% 5350
B65807J0000Y038
N49
1700 +30/–20% 1060
< 0.15 ( 50 mT, 500 kHz, 100 C)
B65807J0000R049
N87
2400 +30/–20% 1490
< 0.51 (200 mT, 100 kHz, 100 C)
B65807J0000R087
N97
2400 +30/–20% 1490
< 0.39 (200 mT, 100 kHz, 100 C)
B65807J0000R097
N95
2800 +30/–20% 1740
< 0.45 (200 mT, 100 kHz, 100 C)
< 0.50 (200 mT, 100 kHz, 25 C)
B65807J0000R095
N41
3100 +30/–20% 1930
< 0.16 (200 mT, 25 kHz, 100 C)
B65807J0000R041
Other AL values/air gaps and materials available on request ─ see Processing remarks on page 12.
Please read Cautions and warnings and
Important notes at the end of this document.
4
3/23
RM 6
Accessories
B65808
Coil former, squared pins
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 C), color code black
Sumikon PM 9630 ® E41429 (M), SUMITOMO BAKELITE CO LTD
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 C, 3.5 s
Winding:
see Processing notes, 2.1
For matching clamp and insulating washers see page 8.
Sections
AN
mm2
lN
mm
AR value
Pins
Ordering code
1
15
30
69
4
5
6
B65808N1004D001
B65808N1005D001
B65808N1006D001
2
14
30
73
4
6
B65808N1004D002
B65808N1006D002
4 pins
5
1
0.
6
5+
6.
5 + 6 pins
0.7±
6
1
2
2
Pin 4 is omitted
in 5-pin version
5
3
3
4
ø7.45 _ 0.1
0.48±0.06
ø12.3 _ 0.2
0.87±0.06
0.3 _ 0.1
5±0.3
7.85 _ 0.1
8.65 _ 0.1
0.52±0.05
5
ø1.25
0.45 max.
ø1+0.1
2.54
ø1+0.1
0.05
50
˚
_1
0
˚
Hole arrangement
View in mounting
direction
Ground ø1.3+0.1
Please read Cautions and warnings and
Important notes at the end of this document.
5
FRM0308-A-E
3/23
RM 6
Accessories
B65808
Coil former for SMPS transformers with line isolation
The creepage distances and clearances are designed such that the coil former is suitable for use
in SMPS transformers with line isolation.
Closed center flange with external wire guide
Optimized for use with automatic winding machines
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 C), color code black
Sumikon PM 9630 ® E41429 (M), SUMITOMO BAKELITE CO LTD
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 C, 3.5 s
Winding:
see Processing notes, 2.1
For matching clamp and insulating washers see page 8.
Sections
AN
mm2
lN
mm
AR value
Pins
Ordering code
2
14
30
73
8
B65808N1108D002
Please read Cautions and warnings and
Important notes at the end of this document.
6
3/23
RM 6
Accessories
B65808
Coil former for power applications with angled pins
Optimized for automatic winding
Material:
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 C), color code black
Valox 420-SE0 [E45329 (M)] SABIC INNOVATIVE PLASTICS B V
Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 C, 2 s
Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 C, 3.5 s
Winding:
see Processing notes, 2.1
For matching clamp and insulating washer 1 see page 8.
Sections
AN
mm2
lN
mm
AR value
Pins
Ordering code
1
15
30
69
8
B65808E1508T001
Please read Cautions and warnings and
Important notes at the end of this document.
7
3/23
RM 6
Accessories
B65808
Clamp
With ground terminal, made of stainless spring steel (tinned), 0.4 mm thick
Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s
Insulating washer for double-clad PCBs
Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E
120 C), 0.25 mm thick
Makrofol FR7-2 [E168120 (M)], COVESTRO AG
Ordering code
Clamp (ordering code per piece, 2 are required)
B65808B2203X000
Insulating washer (bulk)
B65808C2005X000
Clamp
Insulating washer
Clamping forces for RM 6
a
X
Z max
Fmin: Extension of clamp from a to a2 = Xmin
Fmax: Extension of clamp from a to a1 = Xmax
FRM0157-Q
Please read Cautions and warnings and
Important notes at the end of this document.
8
Clamp opening a (mm)
9.5 +0.2
Core nose Zmax (mm)
0.22
Height of core pair X (mm) Xmin
Xmax
10.1
10.6
Clamping force F (N)
7
50
3/23
Fmin
Fmax
RM 6
Accessories
B65821, B65808
SMD coil former with gullwing terminals
Material:
GFR liquid crystal polymer (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 C), color code black
Laperos E 130i E106764 (M), POLYPLASTICS CO LTD
Vectra E 130i E83005 (M), CELANESE INTERNATIONAL CORP.
Solderability: to IEC 60068-2-58, test Td, method 6 (Group 3): 245 C, 3 s
Resistance to soldering heat: to IEC 60068-2-58, test Td, method 6 (Group 3): 255 C, 10 s
permissible soldering temperature for wire-wrap connection on coil former: 400 C, 1 s
Winding:
see Processing notes, 2.1
Clamp
Without ground terminal, made of stainless spring steel, 0.435 mm thick
Sections
AN
mm2
lN
mm
AR value
Terminals
Ordering code
1
16.2
31
66
8
B65821C1008T001
Clamp(ordering code per piece, 2 are required)
B65808J2204X000
Coil former
Clamp
ø7.45 _ 0.1
ø6.5+0.15
8
7
3
4
6
5
22 _ 0.3
3.81
12.7
5.08
1.2
3.81
1
2
0.6±0.1
11.1+0.2
15.5 _ 0.2
0.85 _ 0.05
16.7 _ 0.2
12.7
5.08
_
2.3 _ 0.05 7.95 0.1
0.4±0.1
ø12.3 _ 0.2
Recommended
PCB layout
2.5
22.8
Please read Cautions and warnings and
Important notes at the end of this document.
FRM0311-U-E
9
3/23
RM 6
Accessories
B65659
Adjusting screw
Tube core with thread and core brake made of GFR polyterephthalate
Pocan B3235 ® E245249 (M), LANXESS AG
Figure
Tube core
length (mm) Material
Color code
a
2.62 3.6
N22
red
B65659F0001X023
b
2.75 4.4
N22
black
B65659F0003X023
c
2.82 4.4
N22
yellow
B65659F0004X023
a
b
Please read Cautions and warnings and
Important notes at the end of this document.
Ordering code
c
10
3/23
RM 6 »Low Profile«
Core
B65807P
To IEC 63093-4
For compact transformers
Without center hole
Delivery mode: sets
Magnetic characteristics (per set)
l/A
le
Ae
Amin
Ve
= 0.58 mm–1
= 21.8 mm
= 37.5 mm2
= 31.2 mm2
= 820 mm3
Approx. weight 4.0 g/set
Ungapped
Material
AL value
e
nH
PV
Ordering code
W/set
T38
10500 +40/–30%
4860
B65807P0000Y038
N49
2200 +30/–20%
1020
< 0.14 ( 50 mT, 500 kHz, 100 C)
B65807P0000R049
N92
2300 +30/–20%
1060
< 0.44 (200 mT, 100 kHz, 100 C)
B65807P0000R092
N87
3000 +30/–20%
1390
< 0.40 (200 mT, 100 kHz, 100 C)
B65807P0000R087
Other AL values/air gaps and materials available on request ─ see Processing remarks on page 12.
Please read Cautions and warnings and
Important notes at the end of this document.
11
3/23
Ferrites and accessories
Cautions and warnings
Cautions and warnings
Mechanical stress and mounting
Ferrite cores have to meet mechanical requirements during assembling and for a growing number
of applications. Since ferrites are ceramic materials one has to be aware of the special behavior
under mechanical load.
As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast temperature changing or tensile load. Especially high cooling rates under ultrasonic cleaning and high static
or cyclic loads can cause cracks or failure of the ferrite cores.
For detailed information see data book, chapter “General - Definitions, 8.1”.
Effects of core combination on AL value
Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent
that the initial permeability is dependent on the stress state of the core. The higher the stresses are
in the core, the lower is the value for the initial permeability. Thus the embedding medium should
have the greatest possible elasticity.
For detailed information see data book, chapter “General - Definitions, 8.1”.
Heating up
Ferrites can run hot during operation at higher flux densities and higher frequencies.
NiZn-materials
The magnetic properties of NiZn-materials can change irreversible in high magnetic fields.
Ferrite Accessories
Our ferrite accessories have been designed and evaluated only in combination with our ferrite
cores. We explicitly point out that our ferrite accessories or our ferrite cores may not be compatible
with those of other manufacturers. Any such combination requires prior testing by the customer and
will be at the customer‘s own risk.
We assume no warranty or reliability for the combination of our ferrite accessories with cores and
other accessories from any other manufacturer.
Processing remarks
The start of the winding process should be soft. Else the flanges may be destroyed.
– Too strong winding forces may blast the flanges or squeeze the tube that the cores can not be
mounted any more.
– Too long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrangement.
– Not following the processing notes for soldering of the J-leg terminals may cause solderability
problems at the transformer because of pollution with Sn oxyde of the tin bath or burned insulation of the wire. For detailed information see chapter “Processing notes”, section 2.2.
– The dimensions of the hole arrangement have fixed values and should be understood as
a recommendation for drilling the printed circuit board. For dimensioning the pins, the group
of holes can only be seen under certain conditions, as they fit into the given hole arrangement.
To avoid problems when mounting the transformer, the manufacturing tolerances for positioning
the customers’ drilling process must be considered by increasing the hole diameter.
Please read Cautions and warnings and
Important notes at the end of this document.
12
3/23
Ferrites and accessories
Cautions and warnings
Display of ordering codes for TDK Electronics products
The ordering code for one and the same product can be represented differently in data sheets, data
books, other publications, on the company website or in order-related documents such as shipping
notes, order confirmations and product labels. The varying representations of the ordering
codes are due to different processes employed and do not affect the specifications of the
respective products. Detailed information can be found on the Internet under
www.tdk-electronics.tdk.com/orderingcodes.
Please read Cautions and warnings and
Important notes at the end of this document.
13
3/23
Ferrites and accessories
Symbols and terms
Symbols and terms
Symbol
Meaning
Unit
A
Ae
AL
AL1
Amin
AN
AR
B
B
ˆ
B
Bˆ
BDC
BR
BS
C0
CDF
DF
d
Ea
f
fcutoff
fmax
fmin
fr
fCu
g
H
ˆ
H
HDC
Hc
h
h/i 2
I
IDC
ˆI
J
k
k3
k3c
L
Cross section of coil
Effective magnetic cross section
Inductance factor; AL = L/N2
Minimum inductance at defined high saturation ( a)
Minimum core cross section
Winding cross section
Resistance factor; AR = RCu /N2
RMS value of magnetic flux density
Flux density deviation
Peak value of magnetic flux density
Peak value of flux density deviation
DC magnetic flux density
Remanent flux density
Saturation magnetization
Winding capacitance
Core distortion factor
Relative disaccommodation coefficient DF = d/i
Disaccommodation coefficient
Activation energy
Frequency
Cut-off frequency
Upper frequency limit
Lower frequency limit
Resonance frequency
Copper filling factor
Air gap
RMS value of magnetic field strength
Peak value of magnetic field strength
DC field strength
Coercive field strength
Hysteresis coefficient of material
Relative hysteresis coefficient
RMS value of current
Direct current
Peak value of current
Polarization
Boltzmann constant
Third harmonic distortion
Circuit third harmonic distortion
Inductance
mm2
mm2
nH
nH
mm2
mm2
= 10–6
Vs/m2, mT
Vs/m2, mT
Vs/m2, mT
Vs/m2, mT
Vs/m2, mT
Vs/m2, mT
Vs/m2, mT
F = As/ V
mm–4.5
Please read Cautions and warnings and
Important notes at the end of this document.
14
3/23
J
s–1, Hz
s–1, Hz
s–1, Hz
s–1, Hz
s–1, Hz
mm
A/m
A/m
A/m
A/m
10–6 cm/A
10–6 cm/A
A
A
A
Vs/m2
J/K
H = Vs/A
Ferrites and accessories
Symbols and terms
Symbol
Meaning
Unit
L/L
L0
LH
Lp
Lrev
Ls
le
lN
N
PCu
Ptrans
PV
PF
Q
R
RCu
Rh
Rh
Ri
Rp
Rs
Rth
RV
s
T
T
TC
t
tv
tan
tanL
tanr
tane
tanh
tan/i
U
Û
Ve
Z
Zn
Relative inductance change
Inductance of coil without core
Main inductance
Parallel inductance
Reversible inductance
Series inductance
Effective magnetic path length
Average length of turn
Number of turns
Copper (winding) losses
Transferrable power
Relative core losses
Performance factor
Quality factor (Q = L/Rs = 1/tanL)
Resistance
Copper (winding) resistance (f = 0)
Hysteresis loss resistance of a core
Rh change
Internal resistance
Parallel loss resistance of a core
Series loss resistance of a core
Thermal resistance
Effective loss resistance of a core
Total air gap
Temperature
Temperature difference
Curie temperature
Time
Pulse duty factor
Loss factor
Loss factor of coil
(Residual) loss factor at H 0
Relative loss factor
Hysteresis loss factor
Relative loss factor of material at H 0
RMS value of voltage
Peak value of voltage
Effective magnetic volume
Complex impedance
Normalized impedance |Z|n = |Z| /N 2 (le /Ae)
H
H
H
H
H
H
mm
mm
Please read Cautions and warnings and
Important notes at the end of this document.
15
3/23
W
W
mW/g
K/W
mm
°C
K
°C
s
V
V
mm3
/mm
Ferrites and accessories
Symbols and terms
Symbol
Meaning
Unit
F
e
r
B
i
s
0
a
app
e
i
p'
p"
r
rev
s'
s"
tot
Temperature coefficient (TK)
Relative temperature coefficient of material
Temperature coefficient of effective permeability
Relative permittivity
Magnetic flux
Efficiency of a transformer
Hysteresis material constant
Hysteresis core constant
Magnetostriction at saturation magnetization
Relative complex permeability
Magnetic field constant
Relative amplitude permeability
Relative apparent permeability
Relative effective permeability
Relative initial permeability
Relative real (inductive) component of (for parallel components)
Relative imaginary (loss) component of (for parallel components)
Relative permeability
Relative reversible permeability
Relative real (inductive) component of (for series components)
Relative imaginary (loss) component of (for series components)
Relative total permeability
derived from the static magnetization curve
Resistivity
Magnetic form factor
DC time constant Cu = L/RCu = AL/AR
Angular frequency; = 2 f
1/K
1/K
1/K
l/A
Cu
All dimensions are given in mm.
Surface-mount device
Please read Cautions and warnings and
Important notes at the end of this document.
16
3/23
Vs
mT-1
A–1H–1/2
Vs/Am
m–1
mm–1
s
s–1
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements
about the suitability of our products for a particular customer application. As a rule, we
are either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to
check and decide whether a product with the properties described in the product specification is
suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current
state of the art, even if they are operated as specified. In customer applications requiring a
very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event
of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material
Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the foregoing
for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms
and Conditions of Supply.
Please read Cautions and warnings and
Important notes at the end of this document.
17
3/23
Important notes
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard.
The IATF certifications confirm our compliance with requirements regarding the quality management system in the automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only requirements mutually agreed upon can
and will be implemented in our Quality Management System. For clarification purposes we
like to point out that obligations from IATF 16949 shall only become legally binding if individually
agreed upon.
8. The trade names EPCOS, CarXield, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas,
CSMP,
CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, InsuGate, LeaXield,
MiniBlue, MiniCell, MKD, MKK, ModCap, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod,
PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic,
SIMID, SineFormer, SIOV, ThermoFuse, WindCap, XieldCap are trademarks registered or
pending in Europe and in other countries. Further information will be found on the Internet at
www.tdk-electronics.tdk.com/trademarks.
Release 2022-07
Please read Cautions and warnings and
Important notes at the end of this document.
18
3/23
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