RMB, RMBS
www.vishay.com
Vishay Sfernice
Molded Precision Wirewound Resistors
Axial Leads
FEATURES
• 0.75 W to 3 W at 25 °C
• NF C 83-210
• According to CECC 40201-005
• Low temperature coefficient
± 50 ppm/°C
• Low ohmic values 15 m available
• Excellent behavior against humidity
• Electrical insulation
• Mechanical strength
• Accurate sizes
• Termination = Sn / Ag / Cu or pure matte tin according to
the ohmic value
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
High stability and low temperature coefficient are the main features of the precision wirewound resistors type RMB RMBS
models just as maintenance parts. Their performances can be compared with those of the best film resistors but they have in
addition a greater power rating. RMBS styles meet the more severe requirements of NF C 83-210 and characteristic U of
MIL-R-26 E (approximate size of RW 70 and 79 resistors) specifications. The two models RMB and RMBS have a similar
construction. RMBS are submitted, in addition to a process which further increases the stability. On request, non-inductive
resistors are available under the reference RMB NI.
DIMENSIONS
in millimeters
25 min.
A
25 min.
SERIES
AND
STYLE
RMB0.75
RMBS0.5
RMB1.5
RMBS1
A
max.
7
10.2
16.2
ØB
max.
2.5
4
6.4
E ± 0.1
0.6
0.6
0.8
WEIGHT
g
0.3
0.7
1.5
ØE
ØB
RMB3
RMBS2
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
SIZE
RESISTANCE
RANGE
0.1 to 2K
0.1 to 6.81K
0.051 to 13K
0.1 to 2K
0.1 to 6.81K
0.015 to 13K
RATED POWER
P
25 °C
W
0.75
1.5
3
0.5
1
2
LIMITING ELEMENT
VOLTAGE
V
n/a
120
200
n/a
120
200
TOLERANCE
±%
0.1, 0.5, 1, 2, 5
0.1, 0.5, 1, 2, 5
0.1, 0.5, 1, 2, 5
0.1, 0.5, 1, 2, 5
0.1, 0.5, 1, 2, 5
0.1, 0.5, 1, 2, 5
RMB0.75
RMB1.5
RMB3
RMBS0.5
RMBS1
RMBS2
075
105
300
05
10
20
Revision: 22-Mar-2019
Document Number: 50010
1
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RMB, RMBS
www.vishay.com
Vishay Sfernice
TECHNICAL SPECIFICATIONS
VISHAY SFERNICE SERIES AND STYLE
NF C 83-210
CECC 40201-005
Power Rating
at 25 °C
at 70 °C
± 5 % E24
± 2 % E48
Ohmic Range in
Relation to
Tolerance
± 1 % E96
± 0.5 % E96
± 0.1 %
Qualified Ohmic Range NF C 83-210
Limiting Element Voltage
Critical Resistance
-
Not applicable
-
120 V
RMB0.75
-
-
0.75 W
0.6 W
0.1
to
2 k
0.1
to
2 k
0.1
to
2 k
0.4
to
2 k
RMB1.5
-
-
1.5 W
1.2 W
0.1
to
6.81 k
0.1
to
6.81 k
0.1
to
6.81 k
0.4
to
6.81 k
RMB3
-
-
3W
2.4 W
0.051
to
13 k
0.08
to
12.3 k
0.1
to
12.4 k
0.3
to
12.4 k
-
200 V
RMBS0.5
RP1
A
0.5 W
0.4 W
0.1
to
2 k
0.1
to
2 k
0.1
to
2 k
0.4
to
2 k
1
to 174
Not applicable
RMBS1
RP2
B
1W
0.8 W
0.1
to
6.81 k
0.1
to
6.81 k
0.1
to
6.81 k
0.4
to
6.81 k
1
to 590
120 V
RMBS2
RP3
C
2W
1.6 W
0.015
to
13 k
0.078
to
12.4 k
0.1
to
12.4 k
0.3
to
12.4 k
1
to 1.3 k
200 V
Please consult Vishay Sfernice
Out of nominal ohmic range
PERFORMANCE
TESTS
Dielectric W/s Voltage
Short Time Overload
Climatic Sequence
Humidity
(Steady State)
Thermal Shock
CONDITIONS
500 V
RMS
5
P
n
at 25 °C/5 s
NF C 83-210
-55 °C / +200 °C
5 cycles
NF C 83-210
56 days 95 % RH
Load at 100 % P followed
by cold temp. exposure
at -55 °C
MIL-STD-202
Method 204 - Test D: 20
g
10/2000 Hz
MIL-STD-202
Method 108 Pr 2000 h
MIL-STD-202
Method 106
1000 h at +200 °C
MIL-STD-202
100
g
Method 205 Test C
REQUIREMENTS
MIL-R-26 E
± (0.1 % + 0.05
)
± (0.2 % + 0.05
)
-
-
± (0.2 % + 0.05
)
NF C 83-210
-
± 0.25 % + 0.05
TYPICAL VALUES AND DRIFTS
RMB
RMBS
± (0.05 % + 0.01
)
± (0.05 % + 0.01
)
± (0.1 % + 0.01
)
± (0.05 % + 0.01
)
± 0.25 % + 0.05
± (0.1 % + 0.01
)
± (0.05 % + 0.01
)
Insulation R > 100 M
> 10
4
M
> 10
4
M
± 0.25 % + 0.05
± (0.1 % + 0.01
)
± (0.05 % + 0.01
)
Insulation R > 100 M
> 10
4
M
> 10
4
M
-
± (0.2 % + 0.01
)
(0.1 % + 0.01
)
Vibration
± (0.2 % + 0.05
)
± (0.5 % + 0.05
)
± (0.2 % + 0.05
)
Insulation resistance
> 100 M
± (0.5 % + 0.05
)
± (0.1 % + 0.05
)
± 0.25 % + 0.05
± 0.25 % + 0.05
1000 h at 25 °C
-
± 0.5 % + 0.05
Insulation R > 1 G
± 0.25 % + 0.05
± (0.01 % + 0.01
)
± (0.01 % + 0.01
)
± (1 % + 0.01
)
± (0.15 % + 0.01
)
Load Life
Moisture Resistance
High Temperature
Shock
± (0.1 % + 0.01
)
± (0.05 % + 0.01
)
> 10
3
M
> 10
3
M
± (1 % + 0.05
)
± 0.05 %
± (0.3 % + 0.05
)
± 0.05 %
TEMPERATURE COEFFICIENT IN THE RANGE -55 °C TO +200 °C
OHMIC RANGE
REQUIREMENTS
NF C 83-210 MIL-R-26E
MIL
R
n
< 1
1
R
n
< 10
R
n
10
± 100 ppm/°C
± 50 ppm/°C
± 25 ppm/°C
± 50 ppm/°C
+0 °C to -20 ppm/°C
TYPICAL VALUES
SFERNICE
Revision: 22-Mar-2019
Document Number: 50010
2
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
RMB, RMBS
www.vishay.com
STABILITY AND POWER RATING
Stability changes slightly according to power rating and ambient temperature. This fact is specially important for users needing
a life drift lower than the initial resistance tolerance. Typical drifts, after 2000 h life test made under the 90’/30’ conditions and
at a 25 °C ambient temperature are:
MODEL
STYLE
P
n
1/2
P
n
RMBS
0.5
0.5 W
0.25 W
RMBS
1
1W
0.5 W
RMBS
2
2W
1W
R
%/R %
0.15 %
0.075 %
MODEL
STYLE
P
max.
P
n
1/3
P
n
RMB
0.75
1W
0.75 W
0.4 W
RMB
1.5
2W
1.5 W
0.75 W
RMB
3
3.5 W
3W
1.5 W
R
%/R %
1%
0.5 %
0.3 %
Vishay Sfernice
POWER RATING
125
TEMPERATURE RISE
250
HOT SPOT TEMPERATURE IN°C
RATED POWER IN %
100
200
B0
.7
5
RM
BS
RM
B1
.5
BS
0.
5
1
BS
M
R
2
RM
RM
B3
50
37
25
100
50
0
0
50
100
150
200
250 275 300 350
0
0
RM
75
150
1
2
3
AMBIENT TEMPERATURE IN °C
RATED POWER IN W
MARKING
Vishay Sfernice trademark, model, style, CECC style (if applicable) nominal resistance (in
),
tolerance (in %), manufacturing date.
ORDERING INFORMATION
RMB
RMBS
MODEL
105
05
STYLE
R5000
22R00
OHMIC VALUE
J
J
TOLERANCE
S00
S14
PACKAGING
GLOBAL PART NUMBER INFORMATION
R
M
B
1
0
5
3
0
0
R
0
J
S
0
0
GLOBAL
MODEL
RMB
RMBS
SIZE
RMB:
075
105
300
RMBS:
05
10
20
OPTION
N
= non
inductive
winding
OHMIC VALUE
The first four digits are
significant figures and
the last digit specifies
the number of zeros
to follow.
R designates decimal
point.
300R0
= 300
680R0
= 680
20301
= 20.3 k
88R88
= 88.88
...
TOLERANCE
B
= 0.1 %
D
= 0.5 %
F
=1%
G
=2%
J
=5%
PACKAGING
Standard Packaging:
RMB:
size 075 and 105: S14 = Bag, 100 pieces
size 300: S09 = Bag, 50 pieces
RMBS:
size 05 and 10: S14 = Bag, 100 pieces
size 20: S09 = Bag, 50 pieces
Other packagings available
SPECIAL
As applicable
Ex
= MEX
Revision: 22-Mar-2019
Document Number: 50010
3
For technical questions, contact:
sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 08-Feb-17
1
Document Number: 91000
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