Ferrites and accessories
RM 7, RM 7 LP
Core and accessories
Series/Type:
Date:
B65819, B65820, B65659
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 7
Core and accessories
Individual parts
Adjusting screw
Part no.
B65659
Page
7
Core
Clamps
B65819
B65820
3
6
Insulating washer 1
Coil former
B65820
B65820
6
5
Core
Threaded sleeve (glued-in)
Insulating washer 2
B65819
3
B65820
6
Example of an assembly set
Also available:
RM 7 low profile:
Core
B65819P
7
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
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RM 7
Core
■
To IEC 62317-4
■
Core without center hole
B65819
for transformer applications
■
Delivery mode: sets
Magnetic characteristics
(per set)
with
center hole
Σl/A
l
e
A
e
A
min
V
e
0.75
29.8
40
⎯
1190
without
center hole
0.7
30.4
43
39
1310
mm
–1
mm
mm
2
mm
2
mm
3
Approx. weight
(per set)
m
6.5
7.2
g
Gapped
(A
L
values/air gaps examples)
Material
A
L
value
nH
N41
N48
160
±5%
250
±5%
250
±3%
315
±3%
s
approx.
mm
0.30
0.18
0.16
0.12
90
141
148
187
μ
e
Ordering code
1)
-A with center hole
-N with threaded sleeve
-J without center hole
B65819J0160J041
B65819J0250J041
B65819+0250A048
B65819+0315A048
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 7
Core
Ungapped
Material
A
L
value
nH
N30
T38
N49
N87
N97
N95
5000 +30/–20% 2810
10000 +40/–30% 5630
1900 +30/–20% 1070
2700 +30/–20% 1520
2700 +30/–20% 1520
3300 +30/–20% 1860
< 0.22 ( 50 mT, 500 kHz, 100
°C)
< 0.77 (200 mT, 100 kHz, 100
°C)
< 0.58 (200 mT, 100 kHz, 100
°C)
< 0.65 (200 mT, 100 kHz, 100
°C)
μ
e
P
V
W/set
Ordering code
-J without center hole
B65819J0000R030
B65819J0000Y038
B65819J0000R049
B65819J0000R087
B65819J0000R097
B65819J0000R095
B65819
Other A
L
values/air gaps and materials available on request ─ see Processing remarks on page 9.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
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RM 7
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)
]
, 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
Pins:
Squared pins
For matching clamp and insulating washers see page 6.
Sections
1
2
A
N
mm
2
22.4
21.9
l
N
mm
36.0
36.0
A
R
value
μΩ
55.4
56.5
Pins
8
8
Ordering code
B65820W1008D001
B65820W1008D002
Material:
B65820
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
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