Ferrites and accessories
RM 4, RM 4 LP
Core and accessories
Series/Type:
Date:
B65803, B65804, B65806, B65539
May 2017
EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS’ prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
RM 4
Core and accessories
RM4 through RM 14
Individual parts
Adjusting screw
Core
Part no.
B65539
B65806
B65803
Page
7
3
Clamp
B65806
6
Coil former
B65804
5
Core
Threaded sleeve (glued-in)
Insulating washer
B65803
3
B65804
6
Example of an assembly set
Also available:
RM 4 low profile:
Core
Coil former
SMD coil former
with J terminals
Clamp
Insulatimg washer
B65803
B65804
B65804
B65804
B65804
8
9
10
11
11
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
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RM 4
Core
■
To IEC 62317-4
■
Core without center hole
B65803
for transformer applications
■
Delivery mode: sets
Magnetic characteristics
(per set)
with
center hole
Σl/A
l
e
A
e
A
min
V
e
1.9
21
11
⎯
231
without
center hole
1.7
22
13
11.3
286
mm
–1
mm
mm
2
mm
2
mm
3
Approx. weight
(per set)
m
1.45
1.65
g
Gapped
(A
L
values/air gaps examples)
Material
A
L
value
nH
K1
M33
N48
16
±3%
25
±3%
40
±3%
63
±3%
63
±3%
100
±3%
160
±3%
s
approx.
mm
1.0
0.40
0.36
0.18
0.16
0.10
0.06
μ
e
Ordering code
1)
-A with center hole
-N with threaded sleeve
B65803+0016A001
B65803+0025A001
B65803+0040A033
B65803+0063A033
B65803+0063A048
B65803+0100A048
B65803+0160A048
24.2
37.8
60.4
96
96
152
243
1) Replace the + by the code letter “A” or “N” for the required version.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
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RM 4
Core
Ungapped
Material
A
L
value
nH
N45
N30
T35
T38
N49
N87
N97
1700 +30/–20%
1900 +30/–20%
2800 +40/–30%
3700 +40/–30%
750 +30/–20%
1100 +30/–20%
1100 +30/–20%
2290
2560
3770
4980
1010
1480
1480
< 0.04 ( 50 mT, 500 kHz, 100
°C)
< 0.20 (200 mT, 100 kHz, 100
°C)
< 0.15 (200 mT, 100 kHz, 100
°C)
μ
e
P
V
W/set
Ordering code
-J without center hole
B65803J0000R045
B65803J0000R030
B65803J0000Y035
B65803J0000Y038
B65803J0000R049
B65803J0000R087
B65803J0000R097
B65803
Other A
L
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
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RM 4
Accessories
Coil former
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)
]
, SUMIMOTO 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 6.
Sections
1
A
N
mm
2
7.7
l
N
mm
20
A
R
value
μΩ
89
Pins
5
6
Ordering code
B65804N1105D001
B65804N1106D001
Material:
B65804
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
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