Ferrites and accessories
RM 4, RM 4 LP
Cores and accessories
Series/Type:
Date:
B65803, B65804, B65806, B65539
June 2013
Data Sheet
EPCOS AG 2013. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS’ prior express consent is prohibited.
RM 4
Core
To IEC 62317-4
Core without center hole
for transformer applications
Delivery mode: sets
B65803
Magnetic characteristics
(per set)
with
center hole
l/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
Material
A
L
value
nH
K1
M33
N48
16
3%
25
3%
403%
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
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.
2
06/13
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)
e
P
V
W/set
Ordering code
-J without center hole
B65803J0000R045
B65803J0000R030
B65803J0000Y035
B65803J0000Y038
B65803J0000R049
B65803J0000R087
B65803J0000R097
B65803
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
06/13
RM 4
Accessories
Coil former
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
H max. operating temperature 180
C),
color code white
Bakelite UP 3420
®
E61040 (M)
, HEXION SPECIALTY CHEMICALS GMBH
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 Data Book 2013, chapter “Processing notes, 2.1”
Pins squared in the start-of-winding area.
For matching clamp and insulating washers see page 5.
Sections
1
A
N
mm
2
7.7
l
N
mm
20
A
R
value
89
Pins
5
6
Ordering code
B65804P1005D001
B65804D1006D001
Material:
B65804
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
06/13
RM 4
Accessories
Clamp
With ground terminal, made of stainless spring steel (tinned), 0.3 mm thick
Solderability to IEC 60068-2-20, test Ta, method 1 (aging 3): 235
C,
2 s
Also available as strip clamp on reels on request
Insulating washer
for double-clad PCBs
Made of polycarbonate (UL 94 V-0, insulation class to IEC 60085: E 120
C),
0.3 mm thick
Makrofol FR7-2,
E118859 (M)
, natural color, BAYER MATERIALSCIENCE AG
Ordering code
Clamp (ordering code per piece, 2 are required)
Insulating washer (bulk)
B65806B2203X000
B65804C2005X000
B65804, B65806
Clamp
Insulating washer
Clamping forces for RM 4
F
min
: Extension of clamp from a to a
2
= X
min
F
max
: Extension of clamp from a to a
1
= X
max
Clamp opening a (mm)
Core nose Z
max
(mm)
Height of core pair X (mm) X
min
X
max
Clamping force F (N)
F
min
F
max
8.3 +0.15
0.15
8.75
9.25
5
40
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
06/13
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