RSSD
www.vishay.com
Vishay Sfernice
Wirewound Resistor, Industrial High Power, Vitreous Tubular,
Adjustable, Low Values 0.12
to 560
FEATURES
• High power rating: 16 W to 600 W at 25 °C
• Heavy overloads 10
P
n
15 s
1 %
• Low ohmic values 0.10
available
• High long term stability drift < 1.5 % after 1000 h
• Excellent withstanding of thermal shock
• Mechanical strength
• Fire proof
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
DESIGN SUPPORT TOOLS
Models
Available
click logo to get started
RSSD medium and high power resistors are noted for their ability to withstand heavy transient and severe shock and vibration
conditions. They complement the ohmic range of Vishay styles RW, RWST and RA in the low value area, and can be tapped by
means of adjustable collars. Standard RSSD resistors have a single adjustable collar.
NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (our parts are made of metallic and refractory materials).
DIMENSIONS
in millimeters
WELDED STAINLESS STEEL 304 L COLLARS “AN” TYPE 1
A
Z
F
F
P
Type 1 Type 2
Solded Screwed
ØC
ØC
SCREWED STAINLESS STEEL 304 L COLLARS “CS” TYPE 1
A
ØC
J
ØB
D
R
E
P
ØB
G
H
26
15
L
M
K
ØQ
SCREWED STAINLESS STEEL 304 L COLLARS “CS” TYPE 2
A
ØC
23
ØB
G
H
58
15
L
J
K
M
RSSD
SERIES
8 x 34
10 x 50
13 x 70
16 x 94
20 x 117
CONNECTION
AN type1
AN type1
AN type1 CS
(1)
AN type1
AN type1
A±2
34
50
70
94
117
ØB
MAX.
10
11.5
14.5
18
22
ØC
MIN.
4.1
5
6.7
9.2
12.6
D
27 ± 2
40 ± 2
56 ± 2
78 ± 2
98 ± 2
E
20 ± 0.5
22 ± 0.5
24 ± 0.5
26.5 ± 0.5
31 ± 0.7
F + 0.5
+0
5
6.35
6.35
6.35
6.35
P
28 ± 1
31 ± 1
34 ± 1
38 ± 1
42 ± 1
ØQ
3.2
4.2
4.2
4.2
4.2
R
16 ± 0.5
18 ± 0.5
20 ± 0.5
21 ± 0.5
24 ± 0.7
Z
APPROX.
1
1.5
3.5
4
5
AVERAGE
UNIT
WEIGHT IN g
10
22
38
55
80
Note
(1)
CS connections on request
Revision: 16-Mar-16
Document Number: 50020
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
RSSD
www.vishay.com
Vishay Sfernice
ØB
MAX.
27
27
32
43
53
L ± 0.5
6.5
6.5
9
9
9
ØC
MIN.
16.4
16.4
21.3
22.3
27.1
M ± 0.5
24
24
25
30
30
F + 0.5
+0
9
9
13
18
18
R
28.5 ± 1
28.5 ± 1
31± 1
45 ± 1.5
51 ± 1.5
G-4
-0
199
229
317
432
432
Z
APPROX.
6
6
5
10
11.5
H-4
J
-0
169
50 ± 1.5
199
50 ± 1.5
287
60 ± 1.5
405
69 max.
405
80 max.
AVERAGE UNIT
WEIGHT IN g
AN
CS
90
135
115
160
240
290
845
925
1270
1350
DIMENSIONS
in millimeters
RSSD
SERIES
25 x 138
25 x 168
30 x 250
40 x 370
50 x 373
RSSD
SERIES
25 x 138
25 x 168
30 x 250
40 x 370
50 x 373
CONNECTIONS
AN type1
AN type1
AN type1
AN type2
AN type2
cs type1
cs type1
cs type1
cs type2
cs type2
A±2
138
168
250
370
373
K
27 ± 1
27 ± 1
30 ± 1
45 ± 1
51 ± 1.5
D
117 ± 2
147 ± 2
227 ± 2.5
332 ± 3
332 ± 3
P
51 ± 1.5
51 ± 1.5
55 ± 1.5
81.5 max.
92.5 max.
E
33.5 ± 1
33.5 ± 1
36 ± 1
57 ± 1.5
63 ± 1.5
ØQ
5.7
5.7
5.7
9.2
9.2
CONNECTIONS
AN type1
AN type1
AN type1
AN type2
AN type2
cs type1
cs type1
cs type1
cs type2
cs type2
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
RSSD 8 x 34
RSSD 10 x 50
RSSD 13 x 70
RSSD 16 x 94
RSSD 20 x 117
RSSD 25 x 138
RSSD 25 x 168
RSSD 30 x 250
RSSD 40 x 370
RSSD 50 x 373
SIZE
0834
1050
1370
1694
20117
25138
25168
30250
40370
50373
RESISTANCE
RANGE
0.12 to 10
0.12 to 22
0.12 to 43
0.33 to 75
0.22 to 100
0.10 to 150
0.12 to 220
0.22 to 360
0.47 to 470
0.68 to 560
RATED POWER
P
25 °C
W
16
25
42
70
100
140
200
280
450
600
TOLERANCE
±%
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
5, 10 , 20
MECHANICAL SPECIFICATIONS
Mechanical Protection
Resistive Element
Connections
Average Unit Weight
Vishay Sfernice special cement
Nickel alloy wire
AN collars
CS supporting collars
10 g to 1350 g
TECHNICAL SPECIFICATIONS
Resistance Range
Standard Tolerance
Power Rating
0.12
to 560
(E12 series)
R
10
± 5 %
(1)
1
R < 10
± 10 %
0.1
R < 1
± 20 %
14 W to 600 W at 25 °C
ENVIRONMENTAL SPECIFICATIONS
Temperature Range
Climatic Category
-55 °C, +450 °C
-55 °C / +200 °C / 56 days
Note
(1)
10 % for RSSD 8 x 34 only
PERFORMANCE
TESTS
Short Time Overload
Climatic Sequence
Thermal Shock
Load Life
CONDITIONS
10
P
r
during 5 s
-55 °C, +200 °C
5 cycles
Load at 100 %
P
r
followed by cold -55 °C / 15
90 / 30 cycle
1000 h at
P
r
at +25 °C
REQUIREMENTS
2%
3%
2%
or 0.05
5%
TYPICAL VALUES AND DRIFTS
1%
1%
1%
1.5 %
Revision: 16-Mar-16
Document Number: 50020
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
RSSD
www.vishay.com
Vishay Sfernice
10 x 50
25 W
22 W
0.12
22
1
21
13 x 70
42 W
38 W
0.12
43
1
14
16 x 94
70 W
62 W
0.33
75
1
11
20 x 117 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373
100 W
90 W
0.22
100
1
10
140 W
125 W
0.10
150
1
8
200 W
170 W
0.12
220
2
6.5
280 W
240 W
0.22
360
2
6
450 W
360 W
0.47
470
4
5.7
600 W
450 W
0.68
560
4
5.7
SPECIAL FEATURES
RSSD TYPE
Power Rating
at 25 °C
Continuous
Reduced
8 x 34
16 W
14 W
0.12
10
0
23
Resistance Ohmic Range
(E12, E24 Series)
with 1 Tapping
Maximum Number
of Additional Tapping
Reduction % of Ohmic
Value by Tapping
ADDITIONAL TAPPINGS
Are supplied with their adjustable collars fastened but not set to any specific value. Please note that, on request, all tappings
can be adjusted by Vishay Sfernice. For adjustment purposes we would need to be advised of the ohmic values, and tolerances
of the sections in successive order in addition to their sum
R
n
.
The permissible maximum value for an adjustment should take into account the possible negative tolerance of
R
n
.
Please consult Vishay Sfernice regarding the acceptable
tolerance.
RECOMMENDATIONS FOR USE
Maximum Current Strength:
The ohmic value and the power decrease as the connections are brought together. To avoid overload, the maximum current
strength that is permissible for
R
n
should never be exceeded:
I
max.
=
P
r
R
n
POWER RATING
120
TEMPERATURE RISE
x3
4
SD
10
x5
RS
0
SD
13
x7
RS
0
SD
16
RS
x9
SD
4
20
RS
x1
S
17
RS D 2
SD 5 x
13
8
RS 25 x
SD
16
8
30
x2
RS
50
SD
40
RS
x3
SD
70
50
x3
73
RS
HOT SPOT TEMPERATURE IN °C
400
RS
S
100
RATED POWER IN %
300
80
60
200
40
100
0
0
100
200
300
400
450
0
10
D
8
100
1000
AMBIENT TEMPERATURE IN °C
RATED POWER IN W
MARKING
Vishay Sfernice trademark, model, style, nominal resistance (in
),
tolerance (in %), manufacturing date.
ORDERING INFORMATION
RSSD
MODEL
10 × 50
STYLE
SPECIAL
DESIGN
Method N
o
Optional
AN
CONNECTIONS
10U
OHMIC VALUE
Custom items are
subject to extra-charge and
min. order.
Please see price list.
5%
TOLERANCE
BA25
PACKAGING
e
LEAD
(Pb)-FREE
Revision: 16-Mar-16
Document Number: 50020
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
RSSD
www.vishay.com
Vishay Sfernice
GLOBAL PART NUMBER INFORMATION
R
S
S
D
2
5
1
3
8
A
1
5
R
0
J
B
1
5
GLOBAL
MODEL
RSSD
SIZE
08 x 34
10 x 50
13 x 70
16 x 94
20 x 117
25 x 138
25 x 168
30 x 250
40 x 370
50 x 373
LEADS
A
= AN
B
=B
C
= CS
F
= faston
OHMIC VALUE
The three first digits are
significant figures and the last
digit specifies the number of
zeros to follow.
R designates decimal point.
4700
= 470
48R5
= 48.5
R010
= 0.01
...
TOLERANCE
J
=5%
K
= 10 %
M
= 20 %
PACKAGING
Standard
packaging:
BXX
= box,
XXPCS
(fixed qty
depending on
size)
No standard
packaging:
B00
= box,
qty open
SPECIAL
As applicable.
Example:
CB4
RELATED DOCUMENTS
APPLICATION NOTES
Packaging Information
Accessories
www.vishay.com/doc?50033
www.vishay.com/doc?50021
Revision: 16-Mar-16
Document Number: 50020
4
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
