RSSD
www.vishay.com Vishay Sfernice
Revision: 28-Sep-2018 1Document Number: 50020
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
Wirewound Resistor, Industrial High Power, Vitreous Tubular,
Adjustable, Low Values 0.12 to 560
DESIGN SUPPORT TOOLS
FEATURES
• High power rating: 16 W to 600 W at 25 °C
• Heavy overloads 10 Pn 5 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
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).
Note
(1) CS connections on request
click logo to get started
Available
Models
DIMENSIONS in millimeters
RSSD
SERIES CONNECTION A ± 2 Ø B
MAX.
Ø C
MIN. DE
F + 0.5
+ 0 PØ QR Z
APPROX.
AVERAGE
UNIT
WEIGHT IN g
8 x 34 AN type1 34 10 4.1 27 ± 2 20 ± 0.5 5 28 ± 1 3.2 16 ± 0.5 1 10
10 x 50 AN type1 50 11.5 5 40 ± 2 22 ± 0.5 6.35 31 ± 1 4.2 18 ± 0.5 1.5 22
13 x 70 AN type1 CS (1) 70 14.5 6.7 56 ± 2 24 ± 0.5 6.35 34 ± 1 4.2 20 ± 0.5 3.5 38
16 x 94 AN type1 94 18 9.2 78 ± 2 26.5 ± 0.5 6.35 38 ± 1 4.2 21 ± 0.5 4 55
20 x 117 AN type1 117 22 12.6 98 ± 2 31 ± 0.7 6.35 42 ± 1 4.2 24 ± 0.7 5 80
WELDED STAINLESS STEEL 304 L COLLARS “AN” TYPE 1
Type 2
Screwed
Type 1
Solded
SCREWED STAINLESS STEEL 304 L COLLARS “CS” TYPE 1
SCREWED STAINLESS STEEL 304 L COLLARS “CS” TYPE 2
A
Z
Ø B
DØ Q
R
Ø C Ø C
P
E
P
A
Ø B
26
Ø C
J
K
M
G
H
L
A
Ø B
23
58
J
K
Ø C
M
G
H
15
15
L
F
F
RSSD
www.vishay.com Vishay Sfernice
Revision: 28-Sep-2018 2Document Number: 50020
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
Note
(1) 10 % for RSSD 8 x 34 only
DIMENSIONS in millimeters
RSSD
SERIES CONNECTIONS A ± 2 Ø B
MAX.
Ø C
MIN. D E F + 0.5
+ 0
G - 4
- 0
H - 4
- 0 J
25 x 138 AN type1 cs type1 138 27 16.4 117 ± 2 33.5 ± 1 9 199 169 50 ± 1.5
25 x 168 AN type1 cs type1 168 27 16.4 147 ± 2 33.5 ± 1 9 229 199 50 ± 1.5
30 x 250 AN type1 cs type1 250 32 21.3 227 ± 2.5 36 ± 1 13 317 287 60 ± 1.5
40 x 370 AN type2 cs type2 370 43 22.3 332 ± 3 57 ± 1.5 18 432 405 69 max.
50 x 373 AN type2 cs type2 373 53 27.1 332 ± 3 63 ± 1.5 18 432 405 80 max.
RSSD
SERIES CONNECTIONS K L ± 0.5 M ± 0.5 P Ø Q R Z
APPROX.
AVERAGE UNIT
WEIGHT IN g
AN CS
25 x 138 AN type1 cs type1 27 ± 1 6.5 24 51 ± 1.5 5.7 28.5 ± 1 6 90 135
25 x 168 AN type1 cs type1 27 ± 1 6.5 24 51 ± 1.5 5.7 28.5 ± 1 6 115 160
30 x 250 AN type1 cs type1 30 ± 1 9 25 55 ± 1.5 5.7 31± 1 5 240 290
40 x 370 AN type2 cs type2 45 ± 1 9 30 81.5 max. 9.2 45 ± 1.5 10 845 925
50 x 373 AN type2 cs type2 51 ± 1.5 9 30 92.5 max. 9.2 51 ± 1.5 11.5 1270 1350
STANDARD ELECTRICAL SPECIFICATIONS
MODEL SIZE
RESISTANCE
RANGE
RATED POWER
P25 °C
W
TOLERANCE
± %
RSSD 8 x 34 0834 0.12 to 10 16 5, 10 , 20
RSSD 10 x 50 1050 0.12 to 22 25 5, 10 , 20
RSSD 13 x 70 1370 0.12 to 43 42 5, 10 , 20
RSSD 16 x 94 1694 0.33 to 75 70 5, 10 , 20
RSSD 20 x 117 20117 0.22 to 100 100 5, 10 , 20
RSSD 25 x 138 25138 0.10 to 150 140 5, 10 , 20
RSSD 25 x 168 25168 0.12 to 220 200 5, 10 , 20
RSSD 30 x 250 30250 0.22 to 360 280 5, 10 , 20
RSSD 40 x 370 40370 0.47 to 470 450 5, 10 , 20
RSSD 50 x 373 50373 0.68 to 560 600 5, 10 , 20
MECHANICAL SPECIFICATIONS
Mechanical Protection Vishay Sfernice special cement
Resistive Element Nickel alloy wire
Connections AN collars
CS supporting collars
Average Unit Weight 10 g to 1350 g
ENVIRONMENTAL SPECIFICATIONS
Temperature Range -55 °C, +450 °C
Climatic Category -55 °C / +200 °C / 56 days
TECHNICAL SPECIFICATIONS
Resistance Range 0.12 to 560
(E12 series)
Standard Tolerance
R 10 ± 5 % (1)
1 R < 10 ± 10 %
0.1 R < 1 ± 20 %
Power Rating 14 W to 600 W at 25 °C
PERFORMANCE
TESTS CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS
Short Time Overload 10 Pr during 5 s 2 % 1 %
Climatic Sequence -55 °C, +200 °C
5 cycles 3 % 1 %
Thermal Shock Load at 100 % Pr
followed by cold -55 °C / 15
2 %
or 0.05 1 %
Load Life 90 / 30 cycle
1000 h at Pr at +25 °C 5 % 1.5 %
RSSD
www.vishay.com Vishay Sfernice
Revision: 28-Sep-2018 3Document Number: 50020
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
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 Rn.
The permissible maximum value for an adjustment should take into account the possible negative tolerance of Rn.
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 Rn should never be exceeded:
Imax. =
POWER RATING TEMPERATURE RISE
MARKING
Vishay Sfernice trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date.
SPECIAL FEATURES
RSSD TYPE 8 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
Power Rating
at 25 °C
Continuous 16 W 25 W 42 W 70 W 100 W 140 W 200 W 280 W 450 W 600 W
Reduced 14 W 22 W 38 W 62 W 90 W 125 W 170 W 240 W 360 W 450 W
Resistance Ohmic Range
(E12, E24 Series)
with 1 Tapping
0.12
10
0.12
22
0.12
43
0.33
75
0.22
100
0.10
150
0.12
220
0.22
360
0.47
470
0.68
560
Maximum Number
of Additional Tapping 0 1 1 1 1 1 2 2 4 4
Reduction % of Ohmic
Value by Tapping 23 21 14 11 10 8 6.5 6 5.7 5.7
PrRn
AMBIENT TEMPERATURE IN °C
RATED POWER IN %
100
80
60
40
0 0 100 200 300 400 450
120
RATED POWER IN W
400
300
200
100
0 10 100 1000
RSSD8x34
RSSD10x50
x
31
DSSR07
RSSD16x94
RSSD 20x117
RSSD25x138
RSSD25x168
RSSD30x250
RSSD40x370
RSSD50x 373
HOT SPOT TEMPERATURE IN °C
ORDERING INFORMATION
RSSD 10 × 50 AN 10U 5 % BA25 e
MODEL STYLE SPECIAL
DESIGN
Method No
Optional
CONNECTIONS OHMIC VALUE
Custom items are
subject to extra-charge and
min. order.
Please see price list.
TOLERANCE PACKAGING LEAD
(Pb)-FREE
RSSD
www.vishay.com Vishay Sfernice
Revision: 28-Sep-2018 4Document Number: 50020
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
GLOBAL PART NUMBER INFORMATION
GLOBAL
MODEL SIZE LEADS OHMIC VALUE TOLERANCE PACKAGING SPECIAL
RSSD 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
A = AN
B = B
C = CS
F = faston
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
...
J = 5 %
K = 10 %
M = 20 %
Standard
packaging:
BXX = box,
XXPCS
(fixed qty
depending on
size)
No standard
packaging:
B00 = box,
qty open
As applicable.
Example: CB4
RELATED DOCUMENTS
APPLICATION NOTES
Packaging Information www.vishay.com/doc?50033
Accessories www.vishay.com/doc?50021
D2181RJR S S 53A50B1 5
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
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.
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RSSD20117A6R80KB00 RSSD30250A68R0JB06 RSSD10X50A10R0JS06 RSSD20117A4R70KB15
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RSSD30250A1000JB06 RSSD30250A10R0JB06 RSSD30250A22R0JB06 RSSD30250A3300JB06
RSSD13X70A10R0JB00 RSSD16X94A2R20KB00 RSSD16X94A33R0JB00 RSSD20117A1000JB00
RSSD16X94A4R70KB00 RSSD25168C2R20KB00 RSSD25168C47R0JB00 RSSD25138A15R0JB00
RSSD20117A10R0JB00
