FVR Series
www.vishay.com
Vishay Huntington
Rheostat, Wirewound Resistor, Variable
FEATURES
• Up to 100 W rating
• Meets UL94 V0 flammability rating
• Except for the slide contact surface, the
entire component is coated with a
high-temperature, non-flammable resin.
Custom packages available upon request.
• Custom packages available upon request
• Material categorization:
for
definitions
of
compliance
www.vishay.com/doc?99912
please
see
APPLICATIONS
Educational modeling, load simulations, industrial
machinery RPM adjustment, voltage and current
adjustment,
instruments,
and
automated
control
installations.
STANDARD ELECTRICAL SPECIFICATIONS
HISTORICAL
MODEL
POWER RATING
P25 °C
W
RESISTANCE
RANGE

TOLERANCE
±%
FVR025
FVR25
25
5 to 2.5K
10
FVR050
FVR50
50
7 to 3.5K
10
FVR100
FVR100
100
10 to 5K
10
GLOBAL
MODEL
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
FVR RESISTOR CHARACTERISTICS
Insulation Resistance

100 M minimum
Terminal Strength
kg
3 minimum
Dielectric Withstanding Voltage
VDC
1000, 1 min between terminal and axis
Full Gyration Angle
300 ± 5
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: FVR025200R0KE66 (Visit www.vishay.net SAP Parts Manual for all options)
F
V
R
0
2
5
2
0
0
R
0
K
E
6
6
GLOBAL MODEL
(6 digits)
VALUE
(5 digits)
TOLERANCE
(1 digit)
PACKAGING CODE
(3 digits)
SPECIAL
(up to 3 digits)
FVR025
FVR050
FVR100
R = Decimal
K = Thousand
15R00 = 15 
1K500 = 1.5 k
K = ± 10 %
E66 = Lead (Pb)-free bulk pack
(Dash Number)
From 1 to 999
as applicable
Historical Part Number example: FVR25W200K
FVR25
W = STANDARD
200 
10 %
HISTORICAL MODEL
TCR
RESISTANCE VALUE
TOLERANCE
Revision: 03-Feb-16
Document Number: 31827
1
For technical questions, contact: ww2aresistors@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
FVR Series
www.vishay.com
Vishay Huntington
DIMENSIONS in inches [millimeters]
DIMENSIONS in inches [millimeters]
GLOBAL
MODEL
A
B
C
D
E
F
G
H
I
J
K
1.653
[42.00]
1.969
[50.00]
1.969
[50.00]
0.433
[11.00]
0.197
[5.00]
0.394
[10.00]
FVR025
0.098
[2.50]
0.126
[3.20]
0.866
[22.00]
0.375
[9.52]
0.236 x
0.472
[6 x 12]
FVR050
0.165
[4.20]
0.165
[4.20]
1.102
[28.00]
0.375
[9.52]
0.236 x
0.472
[6 x 12]
2.520
[64.00]
2.362
[60.00]
2.756
[70.00]
0.433
[11.00]
0.315
[8.00]
0.551
[14.00]
FVR100
0.165
[4.20]
0.165
[4.20]
1.653
[42.00]
0.375
[9.52]
0.236 x
0.472
[6 x 12]
3.346
[85.00]
2.953
[75.00]
3.543
[90.00]
0.433
[11.00]
0.315
[8.00]
0.551
[14.00]
MATERIAL SPECIFICATIONS
Element: Copper or Chromium-Alloy, depending on resistance value
Core: Ceramic
Part Marking: Wattage, Ohmic value, tolerance
PERFORMANCE
TEST
CONDITIONS OF TEST
TEST LIMITS
Thermal Shock
JIS-C-5261, 6-5 , 3 kg 30 s
± (2 % + 0.1 ) R
Load Life
JIS-C-5261, 7-7
± (5 % + 0.1 ) R
Vibration
JIS-C-5261, 6-6, 1.5mm 10-50-10 Hz/min X-Y-Z 2 h each
± (2 % + 0.1 ) R
OPTIONAL KNOB
DIMENSIONS in inches [millimeters]
Diameter
1.30 [33.0]
Height
0.63 [16.0]
Note
• Knob can be ordered with part # HEI21174701E66.
Revision: 03-Feb-16
Document Number: 31827
2
For technical questions, contact: ww2aresistors@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

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Revision: 13-Jun-16
1
Document Number: 91000