RM Cores
Series/Type:
RM 12
The following products presented in this data sheet are being withdrawn.
Ordering Code
B65816D20050000
Substitute Product
Date of
Withdrawal
2004-10-18
Deadline Last
Orders
2005-03-31
Last Shipments
2005-09-30
For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.
RM 12
Core
I
In accordance with IEC 60431
I
Optimized core cross section and increased
B65815
,8
29
thickness of base for power applications
I
Without center hole
I
RM cores are supplied in sets
,8
_
1,
2
_
1,2
29
Magnetic characteristics
(per set)
Σ
l/A
l
e
A
e
A
min
V
e
= 0,39 mm
–1
= 57 mm
= 146 mm
2
= 125 mm
2
= 8 340 mm
3
13,4 min.
37,6
_
1,5
ø25+1
Approx. weight
45 g/set
21,6±0,25
16,8+0,6
24,6
_
0,2
S
ø12,8
_
0,4
FRM0300-E
Gapped
Material
A
L
value
nH
N41
160
±
3 %
250
±
3 %
400
±
3 %
1000
±
5 %
s
approx.
mm
1,30
0,70
0,35
0,12
µ
e
Ordering code
-E without center hole
50
78
124
310
B65815-E160-A41
B65815-E250-A41
B65815-E400-J41
B65815-E1000-J41
244
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16,1
_
0,5
5
RM 12
Core
Ungapped
Material
A
L
value
nH
N30
N49
N87
N97
1)
N41
8400 + 30/– 20 %
3700 + 30/– 20 %
5300 + 30/– 20 %
5300 + 30/– 20 %
6000 + 30/– 20 %
2610
1090 1930
1640 2900
1640 2900
1860 2900
< 1,41
(50 mT, 500 kHz, 100
°
C)
B65815
µ
e
A
L1min
P
V
nH
W/set
Ordering code
-E w/o center hole
B65815-E-R30
B65815-E-R49
B65815-E-R87
< 4,50
(200 mT, 100 kHz, 100
°
C)
B65815-E-R97
< 3,60
(200 mT, 100 kHz, 100
°
C)
< 1,50
(200 mT, 25 kHz, 100
°
C)
B65815-E-R41
1) Preliminary data
245
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RM 12
Accessories
Coil former
Material:
GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085:
H max. operating temperature 180
°
C), color code black
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”,
page 153
Squared pins
For matching clamp and insulating washers see page 248
Sections
1
A
N
mm
2
73
l
N
mm
61
A
R
value
µΩ
28,7
Pins
12
Ordering code
B65816-N1012-D1
B65816
Ground Ø 1,3
+0,1
Hole arrangement
View in mounting direction
246
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RM 12
Accessories
Coil former for power applications
Material:
GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155
°
C), color code black
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”,
page 153
For matching clamp and insulating washer 1 see page 248
Sections
1
A
N
mm
2
72
l
N
mm
61
A
R
value
µΩ
28,7
Pins
12
Ordering code
B65816-C1512-T1
B65816
Marking of pin 1
Ground Ø 1,3+0,1
Hole arrangement
View in mounting direction
(Note half pitch!)
247
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