FSOT datasheet(1/4 Pages) VISHAY

Part #	FSOT

Description	Wirewound Resistor, Industrial Power, Silicone Coated, Standard Oval

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Manufacturer	VISHAY [Vishay Siliconix]

Direct Link	http://www.vishay.com

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FSOT

www.vishay.com

Vishay Huntington

Revision: 22-Jul-16

1

Document Number: 31847

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

Wirewound Resistor, Industrial Power,

Silicone Coated, Standard 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

Note

(1) The preferred Models are the FSOT70 and FSOT95. FSOT65 and FSOT75 are being shown as they have historically been used for these

two wattages.

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL



MODEL

HISTORICAL

MODEL

POWER RATING

P25 °C

W

RESISTANCE

RANGE



RESISTANCE

RANGE



WEIGHT

(typical)

g

± 5 %

± 10 %

FSOT10



FSOT10-NI

FSOT-10

FSOT-10-NI

10

1.0 to 15K

1.0 to 1.8K

0.10 to 15K

1.0 to 1.8K

0.41

FSOT15



FSOT15-NI

FSOT-15

FSOT-15-NI

15

1.0 to 26K

1.0 to 3.6K

0.10 to 26K

1.0 to 3.6K

0.47

FSOT20



FSOT20-NI

FSOT-20

FSOT-20-NI

20

1.0 to 71K

1.0 to 9.8K

0.10 to 71K

1.0 to 9.8K

0.74

FSOT30



FSOT30-NI

FSOT-30

FSOT-30-NI

30

1.0 to 11K

1.0 to 1.2K

0.10 to 11K

1.0 to 1.2K

20.14

FSOT40



FSOT40-NI

FSOT-40

FSOT-40-NI

40

1.0 to 26K

1.0 to 3K

0.10 to 26K

1.0 to 3K

30.07

FSOT55



FSOT55-NI

FSOT-55

FSOT-55-NI

55

1.0 to 54K

1.0 to 6.8K

0.10 to 54K

1.0 to 6.8K

51.25

FSOT65 / FSOT70 (1)



FSOT65-NI / FSOT70-NI (1)

FSOT-65

FSOT-65-NI

70

1.0 to 77K

1.0 to 9.4K

0.10 to 77K

1.0 to 9.4K

60.48

FSOT75 / FSOT95 (1)



FSOT75-NI / FSOT95-NI (1)

FSOT-75

FSOT-75-NI

95

1.0 to 99.9K

1.0 to 12.4K

0.10 to 99.9K

1.0 to 12.4K

76.51

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

FSOT RESISTOR CHARACTERISTICS

Temperature Coefficient

ppm/°C

± 260 for 20

 and above, ± 400 for 1  to 20 ,

special TC’s available

Short Time Overload

-

10 x rated power for 5 s

Dielectric Withstanding Voltage

VAC

1000, from terminal to mounting hardware

Maximum Working Voltage

V

(P x R)1/2

Operating Temperature Range

°C

-55 to +350

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