S P E C I F I C A T I O N S
Material
Terminals: Solder-plated copper
terminals or copper clad steel
depending on ohmic value.
Encapsulation: Silicone molding
compound.
Derating
Linearly from 100% @ +25°C to
0% @ +275°C.
Electrical
Tolerance: ±1% standard.
Others available.
Power rating: Based on 25°C
free air rating.
Overload: 5 times rated wattage
for 5 seconds.
Dielectric withstanding voltage:
1000 VRMS for 3 and 5 watt;
500 VRMS for 2 watt.
Insulation resistance:
Not less than 1000MΩ.
Thermal EMF:
F E A T U R E S
• Ideal for current sensing applica-
tions
10 Series
Axial Wire Element
Current Sense
• 1% Tolerance standard, others
available
• Fixed resistance measuring
point “M”
• Low inductance (non-inductive
below 0.25Ω)
• RoHS compliant product avail-
able; add “E” suffix to part num-
ber to specify
L max.
M
1.562 ±0.062 /
39.7 ±1.6
D ±.010 /
±0.3
d ±.002 /
±0.05
700
Two Terminal Axial
Temperature
Coefficient of
Resistance
600
500
400
300
200
100
0
Dimensions (in. / mm)
Length Diam. “M” Lead ga.
0.005-0.10 0.416 / 10.6 0.094 / 2.4 1.156 / 29.4 20
0.005-0.20 0.570 / 14.5 0.205 / 5.2 1.310 / 33.3 20
0.005-0.25 0.935 / 23.8 0.330 / 8.4 1.675 / 42.5 18
Series Wattage Ohms
12
13
15
2
3
5
2 watt
3 watt
5 watt
Less than ±2µV/°C.
Temperature range:
-55°C to 275°C.
D +.015 /
+0.4
B ±.010 /
±0.03
L +.015 /
+0.4
A (min.)
0
10
20
30
40
50
Milliohms
0.032 ±.002
Electrical
Resistance Range: 0.005Ω to
0.100Ω standard
Standard Tolerance: ±1%; oth-
ers available
Operating Temperature Range:
-55˚C to +200˚C
Temperature Coefficient of
Resistance, 0˚C to 85˚C:
≥0.015Ω: ±50 PPM/˚C
<0.015Ω: ±100 PPM/˚C
Environmental Performance:
Exceeds the requirements of
MIL-PRF-49465
Power rating: Based on 25˚C free
air rating.
Overload: 5 times rated wattage
for 5 seconds
F E A T U R E S
• Ideal for current sensing applica-
tions
• 1% Tolerance standard, others
available
• Low Inductance (non-inductive
below 0.25Ω)
• Tinned Copper Leads
• RoHS Compliant
0.81±.05
(20 AWG)
Four Terminal Axial
Dimensions (in. / mm)
Diam.
0.005-0.1 0.625/15.9 0.200/5.08 1.25/31.8 0.125/3.18
4.5 0.005-0.1 1.060/26.9 0.335/8.51 1.50/38.1 0.200/5.08
0.005-0.1 1.500/38.1 0.375/9.53 1.50/38.1 0.200/5.08
Series Wattage Ohms
Length
A
B
13
14
17
3
7
S P E C I F I C A T I O N S
Material
Terminals: Tinned Copper Leads
Encapsulation: Silicone Molding
Compound
Ohmite’s Four-terminal Current-sense Resistors are specifically
designed for low-resistance applications requiring the highest
accuracy and temperature stability. This four-terminal version
of Ohmite’s 10 Series resistor is specially designed for use in a
Kelvin configuration, in which a current is applied through two
opposite terminals and sensing voltage is measured across the
other two terminals .
The Kelvin configuration enables the resistance and tempera-
ture coefficient of the terminals to be effectively eliminated. The
four terminal design also results in a lower temperature coef-
ficient of resistance and lower self-heating drift which may be
experienced on two-terminal resistors. The requirement to con-
nect to the terminals at precise test points is eliminated, allowing
for tighter tolerancing on the end application.
Derating
Linearly from 100% at +25˚C to
0% at +200˚C
Dialectric withstanding voltage:
1500 VAC for 4.5 and 7 watt
1000 VAC for 3 watt
Insulation resistance: Not less
than 1000 MΩ
Thermal EMF: Less than ±2µV/˚C
S TA N D A R D P A R T N U M B E R S F O R 1 0 S E R I E S
O R D E R I N G I N F O R M AT I O N
Ohmic
value
2 Terminal
4 Terminal
Terminals
2 watt
3 watt
5 watt
3 watt
4.5 watt
7 watt
Blank = 2 terminals
Wattage
RoHS Compliant
0.005 12FR005 13FR005 15FR005
0.010 12FR010 13FR010 15FR010
0.015 12FR015 13FR015 15FR015
0.020 12FR020 13FR020 15FR020
0.025 12FR025 13FR025 15FR025
0.030 12FR030 13FR030 15FR030
0.040 12FR040 13FR040 15FR040
0.050 12FR050 13FR050 15FR050
0.060 12FR060 13FR060 15FR060
0.070 12FR070 13FR070 15FR070
13FPR005E 14FPR005E 17FPR005E
13FPR010E 14FPR010E 17FPR010E
13FPR015E 14FPR015E 17FPR015E
13FPR020E 14FPR020E 17FPR020E
13FPR025E 14FPR025E 17FPR025E
13FPR030E 14FPR030E 17FPR030E
13FPR040E 14FPR040E 17FPR040E
13FPR050E 14FPR050E 17FPR050E
13FPR060E 14FPR060E 17FPR060E
13FPR070E 14FPR070E 17FPR070E
P
= 4 terminals
� ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢄ ꢆ
10 Series Tolerance Ohm Value
F = 1%
Example:
R050= 0.05�
D= 0.5%
Check product availability at www.ohmite.com
0.075
13FPR075E 14FPR075E 17FPR075E
13FPR080E 14FPR080E 17FPR080E
13FPR090E 14FPR090E 17FPR090E
13FPR100E 14FPR100E 17FPR100E
0.080 12FR080 13FR080 15FR080
0.090 12FR090 13FR090 15FR090
0.100 12FR100 13FR100 15FR100
0.150
13FR150 15FR150
0.200
0.250
13FR200 15FR200
15FR250
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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