FSOT…XX Flat
www.vishay.com
Vishay Huntington
Wirewound Resistors, Industrial Power, Flat
FEATURES
• High temperature silicon coating
• Mounting accommodations ideally suited to
high density packaging
• Self-stacking hardware for horizontal or vertical
placement
• Withstands high vibrations without loosening
• Mounting hardware functions as a heat sink
allowing greater heat dissipation and less
derating of stacked units
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
FSOT30…14 / FSOT30…16
FSOT30…15 / FSOT30…17
FSOT40…14 / FSOT40…16
FSOT40…15 / FSOT40…17
FSOT55…14 / FSOT55…16
FSOT55…15 / FSOT55…17
FSOT70…14 / FSOT70…16
FSOT70…15 / FSOT70…17
FSOT95…14 / FSOT95…16
FSOT95…15 / FSOT95…17
HISTORICAL
MODEL
HL-24-09 / HL-24-16
NHL-24-09 / NHL-24-16
HL-40-09 / HL-40-16
NHL-40-09 / NHL-40-16
HL-55-09 / HL-55-16
NHL-55-09 / NHL-55-16
HL-70-09 / HL-70-16
NHL-70-09 / NHL-70-16
HL-95-09 / HL-95-16
NHL-95-09 / NHL-95-16
POWER RATING
P
25 °C
W
30
40
55
70
95
RESISTANCE
RANGE
±5%
1.0 to 11K
1.0 to 1.2K
1.0 to 26K
1.0 to 3K
1.0 to 54K
1.0 to 6.8K
1.0 to 77K
1.0 to 9.4K
1.0 to 99.9K
1.0 to12.4K
RESISTANCE
RANGE
± 10 %
0.10 to 11K
1.0 to 1.2K
0.10 to 26K
1.0 to 3K
0.10 to 54K
1.0 to 6.8K
0.10 to 77K
1.0 to 9.4K
0.10 to 99.9K
1.0 to 12.4K
WEIGHT
(typical)
g
20.14
30.07
51.25
60.48
76.51
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
Temperature Coefficient
ppm/°C
Dielectric Withstanding Voltage
V
AC
Short Time Overload
-
Maximum Working Voltage
V
Insulation Resistance
Operating Temperature Range
°C
FSOT…XX FLAT RESISTOR CHARACTERISTICS
± 90 for 0.1
to 0.99
;
± 50 for 1
to 9.9
;
± 30 for 10
and above
1000, from terminal to mounting hardware
10 x rated power for 5 s
(P x
R)
1/2
1000 M minimum dry, 100 M minimum after moisture test
-55 to +350
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: FSOT3009E10R00JE14
F
S
O
T
3
0
TERMINAL
FINISH
E
= lead
(Pb)-free
0
9
E
1
TOLERANCE
0
R
0
0
J
E
1
SPECIAL
4
GLOBAL
MODEL
FSOT30
(see “Standard
Electrical
Specifications”
table above for
additional P/N’s)
TERMINAL
DESIGNATION
09
16
RESISTANCE
VALUE
R
= decimal
K
= thousand
10R00
= 10.0
1K000
= 1 k
PACKAGING CODE
E
= lead (Pb)-free cell and
bulk pack
J
= ± 5.0 %
K
= ± 10.0 %
(dash number)
(up to 2 digits)
from
1 to 99
as applicable
14
= standard,
09 terminal
15
= non-inductive,
09 terminal
16
= standard,
16 terminal
17
= non-inductive,
16 terminal
Revision: 20-Sep-16
Document Number: 30337
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
FSOT…XX Flat
www.vishay.com
DIMENSIONS
in inches [millimeters]
TYPE FSOT…XX FLAT STYLE
0.625 [15.88]
1.188 [30.16]
max.
Vishay Huntington
TERMINAL DIMENSIONS
A
C
Style
09
B
D
A
C
D
0.594 [15.08]
Style
16
B
A
B
0.438 ± 0.030
[11.11 ± 0.794]
C
0.196 [4.98] Dia. typ.
0.563 ± 0.030
[14.29 ± 0.794]
0.313 [7.94] Dia.
DIMENSION
A
B
C
D
DIMENSIONS
in inches [millimeters]
STYLE 09
0.188
[4.76]
0.500
[12.70]
0.104
[2.64]
0.020
[0.51]
STYLE 16
0.188
[4.76]
0.563
[14.29]
0.050
[1.27]
0.020
[0.51]
MODEL
A
± 0.063
[1.59]
1.250
[31.75]
2.000
[50.80]
3.500
[88.90]
4.750
[120.65]
6.000
[152.40]
FSOT30
FSOT40
FSOT55
FSOT70
FSOT95
DIMENSIONS
in inches [millimeters]
DISTANCE
TERMINAL
B
C
BETWEEN
DESIGNATION
± 0.063 ± 0.031 TERMINALS
[1.59] [0.79]
STANDARD OPTIONAL
(ref.)
2.500 2.000
0.718
09E
16E
[63.50] [50.80]
[18.24]
3.250 2.750
1.468
09E
16E
[82.55] [69.85]
[37.29]
4.750 4.250
2.968
09E
16E
[120.65] [107.95]
[75.39]
6.000 5.500
4.218
09E
16E
[152.40] [139.70] [107.14]
7.250 6.750
5.468
09E
16E
[184.15] [171.45] [138.89]
TERMINAL FINISH
“E” Finish - 100 % Sn coated steel.
NON-INDUCTIVE
Models of equivalent physical and electrical specifications
are available with non-inductive (Aryton-Perry) winding. For
non-inductive models, maximum resistance values are
lower, see STANDARD ELECTRICAL SPECIFICATIONS
table.
DERATING
Vishay FSOT flat resistor wattage ratings are based on
mounting horizontally to 10" x 10" x 0.04" [254.0 mm x
254.0 mm x 1.02 mm] steel plate in 25 °C ambient with no
air flow.
RATED POWER IN %
POWER RATING
120
100
80
60
40
20
0
- 65 - 50
EXCLUSIVE BRACKET DESIGN
Mounting strap fits snugly through resistor core and is
bound against unit by two eccentric spacers. The bracket
eliminates expensive cements and improves heat transfer
and power handling capabilities.
MATERIAL SPECIFICATIONS
Element:
copper-nickel alloy of nickel-chrome alloy,
depending on resistance value
Core:
ceramic, steatite
Coating:
special high temperature silicone
Standard Terminals:
model “E” terminals are tinned steel
Terminal Bands:
steel
Part Marking:
HEI, model, wattage, value, tolerance, date
code
0
25
50
150
250
350
AMBIENT TEMPERATURE IN
°
C
Derating is required for ambient temperatures above 25 °C
per the above graph.
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Dielectric Withstanding Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Revision: 20-Sep-16
CONDITIONS OF TEST
Rated power applied until thermally stable,then a minimum of 15 min at -55 °C
10x rated power for 5 s
1000 V
RMS
, 1 min
-55 °C for 24 h
250 h at + 350 °C
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100
g's
for 6 ms, 10 shocks
Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each
1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
TEST LIMITS
± (2.0 % + 0.05
) R
± (2.0 % + 0.05
) R
± (0.1 % + 0.05
) R
± (2.0 % + 0.05
) R
± (2.0 % + 0.05
) R
± (2.0 % + 0.05
) R
± (0.2 % + 0.05)
R
± (0.2 % + 0.05
) R
± (3.0 % + 0.05
) R
Document Number: 30337
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
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,
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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
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Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
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© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 08-Feb-17
1
Document Number: 91000
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