CIRCUIT PROTECTORS
CIRCUIT PROTECTORS
FUSIng RESISTORS
RECTangULaR
BMF
STRUCTURE
1
2
3
4
5
6
7
8
Lead wire
Trimmed metal oxide film
Steel cap
(Cu, Sn plated)
Ceramic core
Welding joint
Special potting material
Steatite ceramic case
Marking
TYPE DESIgnaTIOn (HOW TO ORDER)
BMF
Contact our sales representatives before you use our products for applications including
automotives, medical equipment and aerospace equipment. Malfunction or failure of the
products in such applications may cause loss of human life or serious damage .
*
L
FORMING
L: L-Style
N: N-Style
‘Blank’: S-Style
*Please see “PACKAGING”
2
POWER RATING
Unit: Watt
C
TERMINATION
SURFACE MATERIAL
C: SnCu
100
NOMINAL
RESISTANCE
3 digits
J
RESISTANCE
TOLERANCE
J: (±5%)
PRODUCT CODE
all these products have Pb-free terminations
and meet EU-RoHS requirements
Contact us when you have control request for environmental hazardous material other than the substance specified by EU-RoHS
FEaTURES
■
Fusible metal oxide film resistor
■
Flame retardant type (UL94-0, File No. 55519B) with ceramic case
■
Dielectric withstanding voltage is more than 1000 V
■
Different forming styles are available
■
Rated ambient temperature: +70°C
■
Operating temperature range: -40°C ... +155°C
IDEnTIFICaTIOn
PRODUCT CODE
BMF
COaTIng COLOR
White
Ceramic Case
MaRKIng
Alpha Numeric
(Type, Power,
R-value,
Tolerance, Manufacturer)
TYPICaL FUSIng CHaRaCTERISTICS
DIMEnSIOnS (mm)
TYPE
BMF 1
BMF 2
BMF 3
BMF 5
BMF 2
BMF 1
BMF 2
BMF 3
BMF 5
STYLE
S
S
S
S
N
L
L
L
L
L
13 ± 1.0
18 ± 1 .5
22 ± 1.5
–
13 ± 1
18 ± 1
22 ± 1
W±1
5.5
6 .3
8.0
9 .5
11
5.5
6.4
8.0
9.5
H
5.5 ± 1
6 .3 ± 1
8.0 ± 1
9 .5 ± 1
20.5 ± 1.5
5.5 ± 1
6.4 ± 1
8.0 ± 1
9.5 ± 1
D±1
–
–
7
–
–
–
–
l±3
25
30
–
20
25
27.5
H
1
±1.5
–
–
–
6.0
5.8
10.0
H
2
±1
–
–
–
4.0
Specifications given herein may be changed at any time without prior notice.
Please confirm technical specifications before you order/or use.
RaTIng
TYPE
T.C.R.
(ppm/K)
POWER
RaTIng*
1W
2 W
3W
5W
MaX.
WORKIng
VOLTagE
E =√PxR
MaX.
OVERLOaD
VOLTagE
RESISTanCE RangE
E12
J(±5%)
0.22Ω ...1kΩ
x 25
25 W
0.22Ω...1kΩ
50 W
0.22Ω...33Ω
75 W
0.22Ω...39Ω
125 W
0.22Ω...39Ω
FUSIng CHaRaCTERISTICS
FUSIng POWER
x 30
-----
60 W
36Ω...1kΩ
90 W
43Ω...1kΩ
150 W
43Ω...1kΩ
FUSIng
TIME
BMF 1
BMF 2
± 350
E x 2.5
60 sec. Max.
BMF 3
BMF 5
* For resistors operated in higher ambient temperature than rated, power rating shall be derated.
Rated voltage = Power rating x resistance value Please contact KOA for special precautions before you order and use this series .
z
EUROPE GmbH • Kaddenbusch 6 • D-25578 Dägeling / ITZEHOE • PHONE: +49 (0) 48 21 / 89 89-0 • FAX: +49 (0) 48 21/ 89 89 89 • Internet: www.koaeurope.de
147
Revision: 14. Dec. 2009
CIRCUIT PROTECTORS
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