Data Sheet
Data Sheet
Date:
September 2006
EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS' prior express consent is prohibited.
Ferrites and accessories
RM 8, RM 8 LP
Cores and accessories
Series/Type:
B65811, B65812
2
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
To IEC 62317-4
Cores without center hole
for transformer applications
Delivery mode: sets
Magnetic characteristics (per set)
Approx. weight (per set)
Gapped
with
center hole
without
center hole
l/A
l
e
A
e
A
min
V
e
0.68
35.1
52
--
1825
0.59
38
64
55
2430
mm
1
mm
mm
2
mm
2
mm
3
m
10.7
12
g
Material
A
L
value
nH
s
approx.
mm
e
Ordering code
1)
-D with center hole
-F with threaded sleeve
-J without center hole
N48
250
3%
0.23
134
B65811+0250A048
315
3%
0.17
169
B65811+0315A048
400
3%
0.14
215
B65811+0400A048
630
5%
0.10
338
B65811+0630J048
N41
160
3%
0.49
76
B65811J0160A041
250
5%
0.24
118
B65811J0250J041
630
5%
0.11
298
B65811J0630J041
1600
10%
0.04
756
B65811J1600K041
N87
250
3%
0.30
118
B65811J0250A087
400
3%
0.18
189
B65811J0400A087
1) Replace the + by the code letter "F" or "D" for the required version. Standard version is "D".
B65811
Core
RM 8
3
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
Ungapped
Material
A
L
value
nH
e
P
V
W/set
Ordering code
-D with center hole
-J without center hole
N48
2900 +30/20% 1550
B65811D0000R048
N30
5700 +30/20% 2690
B65811J0000R030
T38
12500 +40/30% 5910
B65811J0000Y038
N49
2200 +30/20% 1040
< 0.37 ( 50 mT, 500 kHz, 100
C) B65811J0000R049
N87
3300 +30/20% 1560
< 1.20 (200 mT, 100 kHz, 100
C) B65811J0000R087
N97
3300 +30/20% 1560
< 1.00 (200 mT, 100 kHz, 100
C) B65811J0000R097
N41
4100 +30/20% 1940
< 0.37 (200 mT, 25 kHz, 100
C) B65811J0000R041
B65811
Core
RM 8
4
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
Coil former, squared pins
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
H max. operating temperature 180
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 Data Book 2007, chapter "Processing notes, 2.1"
For matching clamp and insulating washers see page 8.
Sections
A
N
mm
2
l
N
mm
A
R
value
Pins
Ordering code
1
30
42
47
5
B65812N1005D001
8
B65812N1008D001
12
B65812N1012D001
2
28.4
42
50
5
B65812N1005D002
FRM0301-M-E
8.7+0.2
1.350.05
0.550.05
0.970.05
0.5
5.50.3
0.560.05
1+0.1
2.54
9
4
10
3
12
11
2
1
5
6
8
7
Ground
1.3+0.1
0.2
16.9
_
_
9.95 0.15
_
10.65
0.15
11.55
Hole arrangement
View in mounting direction
12 pins
60
_
10
Version
Pins omitted
5 pins
8 pins
3, 4, 6, 7, 9, 10, 12
3, 4, 9, 10
B65812
Accessories
RM 8
5
09/06
Please read Cautions and warnings and
Important notes at the end of this document.
Coil former, pins squared in the start-of-winding area
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
H max. operating temperature 180
C), color code blue
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 2007, chapter "Processing notes, 2.1"
For matching clamp and insulating washers see page 8.
Sections
A
N
mm
2
l
N
mm
A
R
value
Pins
Ordering code
1
30
42
47
5
B65812K1005D001
8
B65812K1008D001
12
B65812K1012D001
2
28.4
42
50
8
B65812K1008D002
2.54
1+0.1
1.3+0.1
Ground
0.970.05
0.62 max.
9.95
16.9
0.600.05
10.65
11.55
0.15
_
6
7
8
9
8.7+0.2
_
_
5
0.2
0.1
5.50.3
12
3
4
10
11
2
1.350.05
1
FRM0240-2
60
10
_
0.560.05
Hole arrangement
View in mounting direction
12 pins
Version
Pins omitted
5 pins
8 pins
3, 4, 6, 7, 9, 10, 12
3, 4, 9, 10
B65812
Accessories
RM 8
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