RES-60-4TERM Datasheet, PDF (1/1 Pages) Ohmite Mfg. Co. – Ideal for current sensing applications

60 Series
Four Terminal Bare Element
Ohmite’s Four Terminal Bare Element Resistors provide
ultra low resistance values (to 0.0005Ω) for relatively
high current requirements, with the advantages of a
Kelvin configuration and PC Board mounting capability.
These shunt resistors are specifically designed for low
resistance applications requiring the highest accuracy
and temperature stability. This Four Terminal version of
Ohmite’s 60 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
temperature coefficient of the terminals to be effectively
eliminated. The four terminal design also results in a
lower Temperature Coefficient of Resistance and lower
self heating drift which may be experienced on two ter-
minal resistors. The requirement to connect to the ter-
minals at precise test points is eliminated, allowing for
tighter tolerancing on the end application.
F e at u r e s
• Ideal for current sensing applications
• 1% tolerance standard, others available
• Low inductance (non-inductive below
0.05Ω)
• RoHS compliant
• Radial, self-supporting, design is ideal for
PC board mounting
• High Power-to-size ratio
• Decimal marked, silicone coated (650
Series only)
Series specifications
Series Wattage Resistance Range (Ω)*
610
1W
0.002-0.050
650
5W
0.002-0.005
*Standard; others available
Amps max.
32
100
Tolerance*
1%
1%
characteristics
Terminals Tinned Copper
Resistive element Manganin Alloy
Operating Temperature Range -55˚C to +275˚C.
Temperature Coefficient of Resistance 0˚C to 85˚C: ±50 PPM/˚C, .015Ω and higher;
±100 PPM/˚C, .015Ω and lower
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
Thermal EMF Less than ±3µV/˚C
Derating Linearly from 100% @ +25°C to 0% @ 275°C
Derating
100
80
60
40
20
0
0 25 75 125 175 225 275
Ambient Temperature, ϒC
dimensions
610 Series (1 watt)
1.100" ±.010
0.040" (18AWG)
1.400" max.
1.000" ±.010
0.081" (12AWG)
0.100"
(typ. to bend)
0.200" ±.015
0.200" ±.010
650 Series (5 watt)
0.450"
0.100"
max.
(typ. to bend)
0.180"
(typ. tinned
surface)
0.250" ±.010
ORDERIN G IN F ORMATION
Stdandard part numbers
Terminals
P = 4 terminals
RoHS Compliant
610FPR050E
60 Series
Tolerance
F = 1%
Wattage D = 0.5%
10 = 1.0
50 = 5.0
Ohm Value
Example:
R050= 0.05Ω
Ohmic
value
0.002
0.005
0.010
0.015
0.020
0.025
0.036
0.050
610 Series
1 watt
610FPR002E
610FPR005E
610FPR010E
610FPR015E
610FPR020E
610FPR025E
610FPR036E
610FPR050E
650 Series
5 watt
650FPR002E
650FPR005E
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