FST
www.vishay.com
Vishay Huntington
Wirewound Resistor, Industrial Power,
Silicone Coated, Fixed Tubular
FEATURES
• High temperature silicone coating
• Complete welded construction
• Available in non-inductive style (special “NI”)
with Ayrton-Perry winding
• Tight tolerance of 5 % for values above 1
• Excellent stability in operation (< 3 % change
resistance)
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING
P25 °C
W
FST005
FST005...NI
FST010
FST010...NI
FST20A
FST020
FST020...NI
FST025
FST025...NI
FST25A
FST25A...NI
FST25B
FST25B...NI
FST050
FST050...NI
FST50A
FST50A...NI
FST50B
FST50B...NI
FST075
FST075...NI
FST75A
FST75A...NI
FST080
FST100
FST100...NI
FST130
FST130...NI
FST160
FST160...NI
FST175
FST200
FST200...NI
FST225
FST225...NI
FST-5
FST-5-...-NI
FST-10
FST-10-...-NI
HL-15
FST-20
FST-20-...-NI
FST-25
FST-25-...-NI
FST-25A
FST-25A-...-NI
FST-25B
FST-25B-...-NI
FST-50
FST-50-...-NI
FST-50A
FST-50A-...-NI
FST-50B
FST-50B-...-NI
FST-75
FST-75-...-NI
FST-75A
FST-75A-...-NI
HL-80
FST-100
FST-100-...-NI
FST-130
FST-130-...-NI
FST-160
FST-160-...-NI
HL-175
FST-200
FST-200-...-NI
FST-225
FST-225-...-NI
5
5
12
12
15
20
20
25
25
30
30
30
30
50
50
60
60
70
70
75
75
90
90
80
100
100
130
130
175
175
175
225
225
225
225
Revision: 25-Sep-2020
RESISTANCE
RANGE
RESISTANCE
RANGE
±5%
± 10 %
1.0 to 20.5K
1.0 to 750
1.0 to 58K
1.0 to 3.9K
1.0 to 60K
1.0 to 95K
1.0 to 6.8K
1.0 to 115K
1.0 to 8.8K
1.0 to 56K
1.0 to 7.25K
1.0 to 49K
1.0 to 6.8K
1.0 to 112K
1.0 to 21.5K
1.0 to 145K
1.0 to 27.2K
1.0 to 170K
1.0 to 31.4K
1.0 to 276K
1.0 to 35K
1.0 to 238K
1.0 to 31K
1.0 to 190K
1.0 to 260K
1.0 to 48.5K
1.0 to 380K
1.0 to 70.2K
1.0 to 470K
1.0 to 105K
1.0 to 500K
1.0 to 645K
1.0 to 121K
1.0 to 645K
1.0 to 121K
0.1 to 20.5K
1.0 to 750
0.1 to 58K
1.0 to 3.9K
0.10 to 60K
0.1 to 95K
1.0 to 6.8K
0.1 to 115K
1.0 to 8.8K
0.1 to 56K
1.0 to 7.25K
0.1 to 49K
1.0 to 6.8K
0.1 to 112K
1.0 to 21.5K
0.1 to 145K
1.0 to 27.2K
0.1 to 170K
1.0 to 31.4K
0.1 to 276K
1.0 to 35K
0.1 to 238K
1.0 to 31K
0.10 to 190K
0.1 to 260K
1.0 to 48.5K
0.1 to 380K
1.0 to 70.2K
0.1 to 470K
1.0 to 105K
0.10 to 500K
0.1 to 645K
1.0 to 121K
0.1 to 645K
1.0 to 121K
WEIGHT
(typical)
g
4.60
4.60
6.7
6.7
8.64
12.57
12.57
20.7
20.7
20.7
20.7
14.5
14.5
42.1
42.1
65.6
65.6
60.0
60.0
98.5
98.5
64.8
64.8
121.58
91.4
91.4
192.4
192.4
250.8
250.8
250.8
310.0
310.0
310.0
310.0
Document Number: 31840
1
For technical questions, contact: ww2dresistors@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
FST
www.vishay.com
Vishay Huntington
GLOBAL PART NUMBER INFORMATION
Global Part Numbering Example: FST02506E25R00JE (visit www.vishay.net SAP parts manual for all options)
F
S
T
0
2
5
0
6
E
2
5
R
0
0
J
E
GLOBAL MODEL
(6 digits)
TERMINAL
DESIGNATION
(2 digits)
TERMINAL
FINISH
(1 digit)
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING CODE
(1 digit)
SPECIAL
(up to 2 digits)
(see Standard
Electrical
Specifications
Global Model
column for
options)
02, 05,
06, 14,
15, 20
FC = ferrule
cap
E = lead
(Pb)-free
R = decimal
K = thousand
1R500 = 1.5
1K500 = 1.5 k
J=±5%
K = ± 10 %
E = lead (Pb)-free
bulk pack
(dash number)
from 1 to 99 as
applicable
91 = 100 style horizontal
high bracket
92 = 200 style
push-in bracket
93 = 300 style
thru-bolt bracket
CT = center tap
NI = non-inductive
NP = non-inductive +
92 style push-in bracket
NH = non-inductive +
91 style horizontal
bracket
NV = non-inductive +
style vertical bracket
Historical Part Number Example: FST-25-25-5 %
FST-25
25
5%
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE
Revision: 25-Sep-2020
SPECIAL
Document Number: 31840
2
For technical questions, contact: ww2dresistors@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
FST
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Vishay Huntington
DIMENSIONS in inches (millimeters)
TERMINAL SETBACK
DISTANCE CENTER TO CENTER
A
O.D.
I.D.
LENGTH
CORE DIMENSIONS
MODEL
FST005
FST010
FST020
FST20A
FST025
FST25A
FST25B
FST050
FST50A
FST50B
FST075
FST75A
FST080
FST100
FST130
FST160
FST175
FST200
FST225
A
MAX.
LENGTH
0.406
(10.31)
0.406
(10.31)
0.563
(14.30)
0.563
(14.30)
0.688
(17.48)
0.906
(23.01)
0.770
(19.56)
0.688
(17.48)
0.906
(23.01)
0.906
(23.01)
0.688
(17.48)
0.906
(23.01)
1.313
(33.34)
0.906
(23.01)
1.313
(33.35)
1.313
(33.35)
1.313
(33.34)
1.313
(33.35)
1.000
(25.40)
1.750
(44.45)
2.000
(50.8)
2.000
(50.8)
2.000
(50.8)
2.000
(50.8)
2.000
(50.8)
4.000
(101.6)
4.000
(101.6)
4.500
(114.3)
6.000
(152.4)
6.000
(152.4)
4.000
(101.6)
6.500
(165.1)
6.500
(165.1)
8.500
(215.9)
8.500
(215.9)
10.500
(266.7)
O.D.
± 0.031
(0.79)
0.313
(7.95)
0.313
(7.95)
0.438
(11.13)
0.438
(11.11)
0.563
(14.30)
0.750
(19.05)
0.625
(15.88)
0.563
(14.30)
0.750
(19.05)
0.750
(19.05)
0.563
(14.30)
0.750
(19.05)
1.125
(28.58)
0.750
(19.05)
1.125
(28.58)
1.125
(28.58)
1.125
(28.58)
1.125
(28.58)
I.D.
± 0.031
(0.79)
0.188
(4.78)
0.188
(4.78)
0.260
(6.60)
0.313
(7.94)
0.313
(7.95)
0.500
(12.70)
0.453
(11.51)
0.313
(7.95)
0.500
(12.70)
0.547
(13.89)
0.313
(7.95)
0.500
(12.70)
0.750
(19.05)
0.500
(12.70)
0.750
(19.05)
0.750
(19.05)
0.750
(19.05)
0.750
(19.05)
TERMINAL
SETBACK
± 0.031
(0.79)
DISTANCE
CENTER TO
CENTER
(REF.)
0.094
(2.39)
0.094
(2.39)
0.094
(2.39)
0.094
(2.38)
0.094
(2.39)
0.094
(2.39)
0.094
(2.39)
0.094
(2.39)
0.062
(1.57)
0.125
(3.18)
0.094
(2.39)
0.094
(2.39)
0.219
(5.56)
0.125
(3.18)
0.282
(7.16)
0.267
(6.78)
0.219
(5.56)
0.266
(6.76)
0.625
(15.88)
1.375
(34.93)
1.625
(41.28)
1.625
(41.28)
1.562
(39.67)
1.562
(39.67)
1.562
(39.67)
3.562
(90.47)
3.626
(92.10)
4.000
(101.60)
5.562
(141.27)
5.562
(141.27)
2.812
(71.42)
6.000
(152.40)
5.374
(136.50)
7.404
(188.06)
7.312
(185.72)
9.406
(238.91)
TERMINAL DESIGNATION
STANDARD
OPTIONAL
(QUICK
CONNECT)
05
14
05
14
02
14
02
14
06
15
06
15
06
15
06
15
06
15
06
15
06
15
06
15
20
15
06
15
20
15
20
15
20
15
20
15
TERMINAL DIMENSIONS in inches (millimeters)
DIMENSIONS
A
D
C
Style 02, 05, 06,
and 20
A
D
WIDTH A
C
HEIGHT B
B
Styles 14 and 15
B
DIAMETER C
THICKNESS D
Revision: 25-Sep-2020
20
0.375
(9.53)
0.562
(14.07)
0.204
(5.18)
0.020
(0.51)
02
0.188
(4.76)
0.393
(9.98)
0.133
(3.38)
0.020
(0.51)
TERMINAL STYLE
05
06
14
15
0.188 0.250 0.188 0.250
(4.76) (6.35) (4.76) (6.35)
0.393 0.500 0.563 0.594
(9.98) (12.70) (14.29) (15.08)
0.133 0.172 0.050 0.065
(3.38) (4.36) (1.27) (1.65)
0.020 0.020 0.020 0.031
(0.51) (0.51) (0.51) (0.79)
Document Number: 31840
3
For technical questions, contact: ww2dresistors@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
FST
www.vishay.com
Vishay Huntington
DIMENSIONS in inches (millimeters)
MOUNTING HARDWARE
AVAILABLE BRACKET TYPES BY MODEL
GLOBAL
MODEL
91 = 100
STYLE
HORIZONTAL
1 HIGH
BRACKET
92 = 200
STYLE
PUSH-IN
BRACKET
n/a
202
FST005
91 = 100 Style Horizontal 1 High Bracket
93 = 300
STYLE
THRU-BOLT
BRACKET
B
C
Core length plus “X”
n/a
FST010
101
202
301
FST020
101
203
301
BRACKET
TYPE
101
102
FST20A
101
203
301
FST025
102
204
301
FST25A
102
206
302
FST25B
102
205
301
FST050
102
204
302
FST50A
102
206
302
103
X
Y
Z
H
1.063
(26.99)
1.063
(26.99)
1.063
(26.99)
0.500
(12.70)
0.750
(19.05)
1.250
(31.75)
0.950
(24.13)
0.859
(21.83)
1.000
(25.40)
1.000
(25.40)
1.250
(31.75)
1.500
(38.10)
102
208
302
MOUNTING
SLOT
0.219 x 0.438
(5.56 x 11.11)
0.219 x 0.438
(5.56 x 11.11)
0.281 x 0.563
(7.14 x 14.29)
C
B
0.750
(19.05)
0.750
(19.05)
0.927
(23.55)
1.375
(34.93)
1.750
(44.45)
2.125
(53.98)
92 = 200 Style Push-In Bracket
Z
BRACKET
TYPE
202
FST075
102
204
301
FST75A
102
206
302
204
FST100
102
206
302
205
FST130
103
207
302
206
FST175
103
207
303
FST200
103
207
303
FST225
103
207
303
203
207
208
H
Core length
plus “X”
Y
FST50B
H
0.046 (1.17)
X
H
Y
Z
0.478
(12.14)
0.583
(14.80)
0.700
(17.78)
0.846
(21.49)
0.846
(21.49)
0.700
(17.78)
0.846
(21.49)
0.250
(6.35)
0.580
(14.73)
0.578
(14.68)
0.800
(20.32)
0.800
(20.62)
1.125
(28.58)
0.800
(20.62)
0.125
(3.175)
0.188
(4.78)
0.250
(6.35)
0.375
(9.53)
0.375
(9.53)
0.500
(12.70)
0.375
(9.53)
0.375
(9.53)
0.460
(11.68)
0.500
(12.70)
0.600
(15.24)
0.600
(15.24)
0.687
(17.45)
0.600
(15.24)
HOLE
(DIA.)
0.170
(4.32)
0.115
(2.92)
0.156
(3.96)
0.343 x 0.213
(8.71 x 5.46)
0.343 x 0.213
(8.71 x 5.46)
0.250 x 0.188
(6.35 x 4.78)
0.343 x 0.213
(8.71 x 5.46)
93 = 300 Style Thru-Bolt Bracket
BRACKET
TYPE
301
302
303
Revision: 25-Sep-2020
X
(APPROXIMATE)
0.373
(9.47)
0.271
(6.88)
0.463
(11.76)
THREAD
8 to 32
8 to 32
1/4 to 20
Document Number: 31840
4
For technical questions, contact: ww2dresistors@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
FST
www.vishay.com
Vishay Huntington
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
Power Rating
W
5 to 225
Resistance Range
0.1 to 645K
Resistance Tolerance
RESISTOR CHARACTERISTICS
%
5
Temperature Coefficient
ppm/°C
± 260 for 20 and above, ± 400 for 1 to 19.99
Operating Temperature
°C
-55 °C to 350°C
Temperature Rise
°C
325 °C above an ambient of 25 °C
Maximum Altitude
f.a.s.l.
10 000
-
10x rated power for 5 s
Short-Term Overload
Surge Windings
Available
Maximum Working Voltage
(P x R)0.5
-
Insulation Resistance
Dielectric Voltage
1M
VRMS
1000 VAC
Creepage
Varies by wattage, see “Terminal Setback” in Dimensions table
Terminal Sleeves
n/a
Inductance
μH
Varies by wattage and resistance
Non-Inductive Winding
Available
Terminal Strength
lb
10 lbs
Electrical or Mechanical Customization
Contact factory: ww2dresistors@vishay.com
MATERIAL SPECIFICATIONS
Element
Copper-nickel alloy or nickel-chrome alloy, depending on resistance value
Core
Cordierite, steatite
Coating
Special high temperature silicone
Standard Terminals
Tinned alloy 42
Optional Terminals
Alloy 42
Terminal Bands
Alloy 42
Part Marking
HEI, model, wattage, value, tolerance, date code
NON-INDUCTIVE
Models of equivalent physical and electrical specifications are available with non-inductive (Ayrton-Perry) winding. They are
identified by adding the letters “NI” to the end of the part number in the special section. For non-inductive models the maximum
resistance values are lower, see Standard Electrical Specifications table.
RATED POWER IN %
DERATING
120
100
80
60
40
20
0
0
50
100
150
200
250
300
350
25
AMBIENT TEMPERATURE IN °C
Revision: 25-Sep-2020
Document Number: 31840
5
For technical questions, contact: ww2dresistors@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.
© 2021 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 01-Jan-2021
1
Document Number: 91000