FSOT Datasheet

Not available for new designs, use FSOT
FSOT
www.vishay.com
Vishay Huntington
Wirewound Resistor, Industrial Power,
Silicone Coated, Miniature Oval
FEATURES
• High temperature silicone coating
• Mounting accommodations ideally suited to
high density packaging
• Available in non-inductive style (special “NI”)
with Ayrton-Perry winding
• Self-stacking hardware for horizontal or vertical
placement
• 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
FSOT10
FSOT10-NI
FSOT15
FSOT15-NI
FSOT20
FSOT20-NI
RESISTANCE
RANGE

±5%
1.0 to 15K
1.0 to 1.8K
1.0 to 26K
1.0 to 3.6K
1.0 to 71K
1.0 to 9.8K
POWER RATING
P25 °C
W
HISTORICAL
MODEL
FSOT-10
FSOT-10-NI
FSOT-15
FSOT-15-NI
FSOT-20
FSOT-20-NI
10
15
20
RESISTANCE
RANGE

± 10 %
0.10 to 15K
1.0 to 1.8K
0.10 to 26K
1.0 to 3.6K
0.10 to 71K
1.0 to 9.8K
WEIGHT
(typical)
g
0.41
0.47
0.74
TECHNICAL SPECIFICATIONS
PARAMETER
Temperature Coefficient
Short Time Overload
Dielectric Withstanding Voltage
UNIT
FSOT RESISTOR CHARACTERISTICS
ppm/°C
± 260 for 20  and above, ± 400 for 1  to 20 ,
special TC’s available
-
10 x rated power for 5 s
VAC
1000, from terminal to mounting hardware
Maximum Working Voltage
V
(P x R)1/2
Operating Temperature Range
°C
-55 to +350
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: FSOT2011E25R00JE (visit www.vishay.net SAP parts manual for all options)
F
S
O
GLOBAL MODEL
(6 digits)
T
2
0
1
TERMINAL
DESIGNATION
(2 digits)
TERMINAL
FINISH
(1 digit)
11
E = lead
(Pb)-free
(See Standard
Electrical
Specifications
Global Model
column for
options)
1
E
2
5
R
0
0
J
E
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING CODE
(1 digit)
SPECIAL
(up to 2 digits)
R = decimal
K = thousand
1R500 = 1.5 
1K500 = 1.5 k
J=±5%
K = ± 10 %
E = Lead (Pb)-free
cell and bulk pack
(Dash number)
From 1 to 99 as
applicable
NI = non-inductive
Historical Part Number example: FSOT-20-25-5 %
FSOT-20
25 
5%
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE
Revision: 26-Feb-16
SPECIAL
Document Number: 31846
1
For technical questions, contact: [email protected]
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
Not available for new designs, use FSOT
FSOT
www.vishay.com
Vishay Huntington
DIMENSIONS in inches [millimeters]
Distance
center to center
DIMENSIONS in inches [millimeters]
A
± 0.063
[1.59]
B
± 0.063
[1.59]
C
± 0.031
[0.79]
DISTANCE
CENTER TO
CENTER
(REF.)
STANDARD
TERMINAL
DESIGNATION
FSOT10
0.750
[19.05]
1.312
[33.32]
1.000
[25.40]
0.531
[13.49]
11
FSOT15
1.000
[25.40]
1.562
[39.67]
1.250
[31.75]
0.781
[19.84]
11
FSOT20
2.062
[52.37]
2.625
[66.68]
2.312
[58.72]
1.843
[46.81]
11
MODEL
TERMINAL DIMENSIONS
MATERIAL SPECIFICATIONS
D
Element: copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
G
E
Core: ceramic, steatite
Style 11
F
Coating: special high temperature silicone
Standard Terminals: tinned alloy 42
DIMENSIONS in inches [millimeters]
DIMENSIONS
STYLE 11
D
0.125 [3.18]
E
(HOLE DIAMETER)
0.081 [2.10]
F
0.235 [5.97]
G
0.020 [0.51]
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.
DERATING
RATED POWER IN %
Terminal Bands: alloy 42
120
100
80
60
40
20
0
- 55 - 50
0
50
150
250
350
25
AMBIENT TEMPERATURE IN °C
Revision: 26-Feb-16
Document Number: 31846
2
For technical questions, contact: [email protected]
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
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www.vishay.com
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Revision: 02-Oct-12
1
Document Number: 91000