FST20020E7K900FE2 - VISHAY - Datasheet.Directory

FST

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Revision: 25-Sep-2020 1Document Number: 31840

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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

RESISTANCE

RANGE



RESISTANCE

RANGE



WEIGHT

(typical)

± 5 % ± 10 %

FST005 FST-5 5 1.0 to 20.5K 0.1 to 20.5K 4.60

FST005...NI FST-5-...-NI 5 1.0 to 750 1.0 to 750 4.60

FST010 FST-10 12 1.0 to 58K 0.1 to 58K 6.7

FST010...NI FST-10-...-NI 12 1.0 to 3.9K 1.0 to 3.9K 6.7

FST20A HL-15 15 1.0 to 60K 0.10 to 60K 8.64

FST020 FST-20 20 1.0 to 95K 0.1 to 95K 12.57

FST020...NI FST-20-...-NI 20 1.0 to 6.8K 1.0 to 6.8K 12.57

FST025 FST-25 25 1.0 to 115K 0.1 to 115K 20.7

FST025...NI FST-25-...-NI 25 1.0 to 8.8K 1.0 to 8.8K 20.7

FST25A FST-25A 30 1.0 to 56K 0.1 to 56K 20.7

FST25A...NI FST-25A-...-NI 30 1.0 to 7.25K 1.0 to 7.25K 20.7

FST25B FST-25B 30 1.0 to 49K 0.1 to 49K 14.5

FST25B...NI FST-25B-...-NI 30 1.0 to 6.8K 1.0 to 6.8K 14.5

FST050 FST-50 50 1.0 to 112K 0.1 to 112K 42.1

FST050...NI FST-50-...-NI 50 1.0 to 21.5K 1.0 to 21.5K 42.1

FST50A FST-50A 60 1.0 to 145K 0.1 to 145K 65.6

FST50A...NI FST-50A-...-NI 60 1.0 to 27.2K 1.0 to 27.2K 65.6

FST50B FST-50B 70 1.0 to 170K 0.1 to 170K 60.0

FST50B...NI FST-50B-...-NI 70 1.0 to 31.4K 1.0 to 31.4K 60.0

FST075 FST-75 75 1.0 to 276K 0.1 to 276K 98.5

FST075...NI FST-75-...-NI 75 1.0 to 35K 1.0 to 35K 98.5

FST75A FST-75A 90 1.0 to 238K 0.1 to 238K 64.8

FST75A...NI FST-75A-...-NI 90 1.0 to 31K 1.0 to 31K 64.8

FST080 HL-80 80 1.0 to 190K 0.10 to 190K 121.58

FST100 FST-100 100 1.0 to 260K 0.1 to 260K 91.4

FST100...NI FST-100-...-NI 100 1.0 to 48.5K 1.0 to 48.5K 91.4

FST130 FST-130 130 1.0 to 380K 0.1 to 380K 192.4

FST130...NI FST-130-...-NI 130 1.0 to 70.2K 1.0 to 70.2K 192.4

FST160 FST-160 175 1.0 to 470K 0.1 to 470K 250.8

FST160...NI FST-160-...-NI 175 1.0 to 105K 1.0 to 105K 250.8

FST175 HL-175 175 1.0 to 500K 0.10 to 500K 250.8

FST200 FST-200 225 1.0 to 645K 0.1 to 645K 310.0

FST200...NI FST-200-...-NI 225 1.0 to 121K 1.0 to 121K 310.0

FST225 FST-225 225 1.0 to 645K 0.1 to 645K 310.0

FST225...NI FST-225-...-NI 225 1.0 to 121K 1.0 to 121K 310.0

FST

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Revision: 25-Sep-2020 2Document Number: 31840

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

GLOBAL PART NUMBER INFORMATION

Global Part Numbering Example: FST02506E25R00JE (visit www.vishay.net SAP parts manual for all options)

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 SPECIAL

ST02506E25R00F J E

FST

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Revision: 25-Sep-2020 3Document Number: 31840

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DIMENSIONS in inches (millimeters)

MODEL A

MAX.

CORE DIMENSIONS TERMINAL

SETBACK

± 0.031

(0.79)

DISTANCE

CENTER TO

CENTER

(REF.)

TERMINAL DESIGNATION

LENGTH

O.D.

± 0.031

(0.79)

I.D.

± 0.031

(0.79)

STANDARD

OPTIONAL

(QUICK

CONNECT)

FST005 0.406

(10.31)

1.000

(25.40)

0.313

(7.95)

0.188

(4.78)

0.094

(2.39)

0.625

(15.88) 05 14

FST010 0.406

(10.31)

1.750

(44.45)

0.313

(7.95)

0.188

(4.78)

0.094

(2.39)

1.375

(34.93) 05 14

FST020 0.563

(14.30)

2.000

(50.8)

0.438

(11.13)

0.260

(6.60)

0.094

(2.39)

1.625

(41.28) 02 14

FST20A 0.563

(14.30)

2.000

(50.8)

0.438

(11.11)

0.313

(7.94)

0.094

(2.38)

1.625

(41.28) 02 14

FST025 0.688

(17.48)

2.000

(50.8)

0.563

(14.30)

0.313

(7.95)

0.094

(2.39)

1.562

(39.67) 06 15

FST25A 0.906

(23.01)

2.000

(50.8)

0.750

(19.05)

0.500

(12.70)

0.094

(2.39)

1.562

(39.67) 06 15

FST25B 0.770

(19.56)

2.000

(50.8)

0.625

(15.88)

0.453

(11.51)

0.094

(2.39)

1.562

(39.67) 06 15

FST050 0.688

(17.48)

4.000

(101.6)

0.563

(14.30)

0.313

(7.95)

0.094

(2.39)

3.562

(90.47) 06 15

FST50A 0.906

(23.01)

4.000

(101.6)

0.750

(19.05)

0.500

(12.70)

0.062

(1.57)

3.626

(92.10) 06 15

FST50B 0.906

(23.01)

4.500

(114.3)

0.750

(19.05)

0.547

(13.89)

0.125

(3.18)

4.000

(101.60) 06 15

FST075 0.688

(17.48)

6.000

(152.4)

0.563

(14.30)

0.313

(7.95)

0.094

(2.39)

5.562

(141.27) 06 15

FST75A 0.906

(23.01)

6.000

(152.4)

0.750

(19.05)

0.500

(12.70)

0.094

(2.39)

5.562

(141.27) 06 15

FST080 1.313

(33.34)

4.000

(101.6)

1.125

(28.58)

0.750

(19.05)

0.219

(5.56)

2.812

(71.42) 20 15

FST100 0.906

(23.01)

6.500

(165.1)

0.750

(19.05)

0.500

(12.70)

0.125

(3.18)

6.000

(152.40) 06 15

FST130 1.313

(33.35)

6.500

(165.1)

1.125

(28.58)

0.750

(19.05)

0.282

(7.16)

5.374

(136.50) 20 15

FST160 1.313

(33.35)

8.500

(215.9)

1.125

(28.58)

0.750

(19.05)

0.267

(6.78)

7.404

(188.06) 20 15

FST175 1.313

(33.34)

8.500

(215.9)

1.125

(28.58)

0.750

(19.05)

0.219

(5.56)

7.312

(185.72) 20 15

FST200

FST225

1.313

(33.35)

10.500

(266.7)

1.125

(28.58)

0.750

(19.05)

0.266

(6.76)

9.406

(238.91) 20 15

TERMINAL DIMENSIONS in inches (millimeters)

DIMENSIONS TERMINAL STYLE

20 02 05 06 14 15

WIDTH A 0.375

(9.53)

0.188

(4.76)

0.188

(4.76)

0.250

(6.35)

0.188

(4.76)

0.250

(6.35)

HEIGHT B 0.562

(14.07)

0.393

(9.98)

0.393

(9.98)

0.500

(12.70)

0.563

(14.29)

0.594

(15.08)

DIAMETER C 0.204

(5.18)

0.133

(3.38)

0.133

(3.38)

0.172

(4.36)

0.050

(1.27)

0.065

(1.65)

THICKNESS D 0.020

(0.51)

0.020

(0.51)

0.020

(0.51)

0.020

(0.51)

0.020

(0.51)

0.031

(0.79)

A O.D. I.D.

TERMINAL SETBACK

DISTANCE CENTER TO CENTER

LENGTH

Styles 14 and 15 B

Style 02, 05, 06,

and 20

FST

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Revision: 25-Sep-2020 4Document Number: 31840

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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

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DIMENSIONS in inches (millimeters)

91 = 100 Style Horizontal 1 High Bracket

92 = 200 Style Push-In Bracket

93 = 300 Style Thru-Bolt Bracket

MOUNTING HARDWARE

GLOBAL

MODEL

AVAILABLE BRACKET TYPES BY MODEL

91 = 100

STYLE

HORIZONTAL

1 HIGH

BRACKET

92 = 200

STYLE

PUSH-IN

BRACKET

93 = 300

STYLE

THRU-BOLT

BRACKET

FST005 n/a 202 n/a

FST010 101 202 301

FST020 101 203 301

FST20A 101 203 301

FST025 102 204 301

FST25A 102 206 302

FST25B 102 205 301

FST050 102 204 302

FST50A 102 206 302

FST50B 102 208 302

FST075 102 204 301

FST75A 102 206 302

FST100 102 206 302

FST130 103 207 302

FST175 103 207 303

FST200 103 207 303

FST225 103 207 303

BRACKET



TYPE XYZH

MOUNTING

SLOT CB

101 1.063

(26.99)

0.500

(12.70)

0.950

(24.13)

1.000

(25.40)

0.219 x 0.438

(5.56 x 11.11)

0.750

(19.05)

1.375

(34.93)

102 1.063

(26.99)

0.750

(19.05)

0.859

(21.83)

1.250

(31.75)

0.219 x 0.438

(5.56 x 11.11)

0.750

(19.05)

1.750

(44.45)

103 1.063

(26.99)

1.250

(31.75)

1.000

(25.40)

1.500

(38.10)

0.281 x 0.563

(7.14 x 14.29)

0.927

(23.55)

2.125

(53.98)

BRACKET

TYPE XHYZ HOLE

(DIA.)

202 0.478

(12.14)

0.250

(6.35)

0.125

(3.175)

0.375

(9.53)

0.170

(4.32)

203 0.583

(14.80)

0.580

(14.73)

0.188

(4.78)

0.460

(11.68)

0.115

(2.92)

204 0.700

(17.78)

0.578

(14.68)

0.250

(6.35)

0.500

(12.70)

0.156

(3.96)

205 0.846

(21.49)

0.800

(20.32)

0.375

(9.53)

0.600

(15.24)

0.343 x 0.213

(8.71 x 5.46)

206 0.846

(21.49)

0.800

(20.62)

0.375

(9.53)

0.600

(15.24)

0.343 x 0.213

(8.71 x 5.46)

207 0.700

(17.78)

1.125

(28.58)

0.500

(12.70)

0.687

(17.45)

0.250 x 0.188

(6.35 x 4.78)

208 0.846

(21.49)

0.800

(20.62)

0.375

(9.53)

0.600

(15.24)

0.343 x 0.213

(8.71 x 5.46)

BRACKET

TYPE

(APPROXIMATE) THREAD

301 0.373

(9.47) 8 to 32

302 0.271

(6.88) 8 to 32

303 0.463

(11.76) 1/4 to 20

0.046 (1.17)

Core length plus “X”

Core length

plus “X”

FST

www.vishay.com Vishay Huntington

Revision: 25-Sep-2020 5Document Number: 31840

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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

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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.

TECHNICAL SPECIFICATIONS

PARAMETER UNIT RESISTOR CHARACTERISTICS

Power Rating W5 to 225

Resistance Range 0.1 to 645K

Resistance Tolerance % 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

Short-Term Overload -10x rated power for 5 s

Surge Windings Available

Maximum Working Voltage -(P x R)0.5

Insulation Resistance 1M

Dielectric Voltage 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

DERATING

AMBIENT TEMPERATURE IN °C

120

100

RATED POWER IN %

0 30025020015010050 350

Legal Disclaimer Notice

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