FVT

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Vishay Huntington

Revision: 03-Jun-16

5

Document Number: 31838

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

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

W

5 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

-

Insultation Resistance



1M

Dielectric Voltage

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

MATERIAL SPECIFICATIONS

Element

Copper-nickel alloy or nickel-chrome alloy, depending on resistance value

Core

Cordierite, steatite

Coating

Special high temperature vitreous enamel

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

80

60

40

20

0

25

0

300

250

200

150

100

50

350