10 Series
Axial Wire Element Current Sense
Four Terminal Axial
F ꢀ at u ꢁ ꢀ S
Ohmite’sꢀFour-terminalꢀCurrent-senseꢀResistorsꢀareꢀ
specificallyꢀdesignedꢀforꢀlow-resistanceꢀapplicationsꢀ
requiringꢀtheꢀhighestꢀaccuracyꢀandꢀtemperatureꢀ
stability.ꢀThisꢀfour-terminalꢀversionꢀofꢀOhmite’sꢀ10ꢀ
Seriesꢀresistorꢀisꢀspeciallyꢀdesignedꢀforꢀuseꢀinꢀaꢀ
Kelvinꢀconfiguration,ꢀinꢀwhichꢀaꢀcurrentꢀisꢀappliedꢀ
throughꢀtwoꢀoppositeꢀterminalsꢀandꢀsensingꢀvoltageꢀ
isꢀmeasuredꢀacrossꢀtheꢀotherꢀtwoꢀterminalsꢀ.ꢀꢀ
TheꢀKelvinꢀconfigurationꢀenablesꢀtheꢀresistanceꢀ
andꢀtemperatureꢀcoefficientꢀofꢀtheꢀterminalsꢀtoꢀbeꢀ
effectivelyꢀeliminated.ꢀꢀTheꢀfourꢀterminalꢀdesignꢀ
alsoꢀresultsꢀinꢀaꢀlowerꢀtemperatureꢀcoefficientꢀofꢀ
resistanceꢀandꢀlowerꢀself-heatingꢀdriftꢀwhichꢀmayꢀbeꢀ
experiencedꢀonꢀtwo-terminalꢀresistors.ꢀTheꢀrequire-
mentꢀtoꢀconnectꢀtoꢀtheꢀterminalsꢀatꢀpreciseꢀtestꢀ
pointsꢀisꢀeliminated,ꢀallowingꢀforꢀtighterꢀtolerancingꢀ
onꢀtheꢀendꢀapplication.ꢀꢀ
•Ideal for current sensing applications
•1% Tolerance standard, others available
•Low Inductance (non-inductive below 0.25Ω)
•Tinned Copper Leads
•RoHS Compliant
SꢀꢁꢂꢀS SpꢀCꢂFꢂCatꢂonS
Series Wattage
Ohms
13
14
17
3
4.5
7
0.005-0.1
0.005-0.1
0.005-0.1
ChaꢁaCtꢀꢁꢂStꢂCS
DꢂmꢀnSꢂonS
Tinned Copper Leads
Terminals
Encapsulation
Derating
D +.015 /
L +.015 /
B ±.010 /
±0.03
A (min.)
+0.4
+0.4
Silicone Molding Compound
Linearly from 100% at +25˚C to 0% at
+200˚C
0.032 ±.002
0.005Ω to 0.100Ω standard
±1%; others available
-55˚C to +200˚C
Resistance Range
Standard Tolerance
0.81±.05
(20 AWG)
Operating Temp. Range
Series
13
Wattage
Length
Diam.
A
B
3
4.5
7
0.625/15.9
1.060/26.9
1.500/38.1
0.200/5.08
0.335/8.51
0.375/9.53
1.25/31.8
1.50/38.1
1.50/38.1
0.125/3.18
(0˚C to 85˚C) ≥0.015Ω: ±50 PPM/˚C;
<0.015Ω: ±100 PPM/˚C
Temperature Coefficient
of Resistance
14
0.200/5.08
0.200/5.08
17
Exceeds the requirements of MIL-
PRF-49465
Environmental
Performance
oꢁDꢀꢁꢂnG ꢂnFoꢁmatꢂon
Based on 25˚C free air rating.
5 times rated wattage for 5 seconds
22 amps
Power rating
Overload
Terminals
Blank = 2 terminals
Wattage
RoHS Compliant
P
= 4 terminals
Max. Current
� ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢄ ꢆ
1500 VAC for 4.5 and 7 watt; 1000
VAC for 3 watt
Dialectric withstanding
voltage
10 Series Tolerance Ohm Value
F = 1%
D= 0.5%
Example:
R050= 0.05�
Not less than 1000 MΩ
Less than ±2µV/˚C
Insulation resistance
Thermal EMF
Standard part numbers
Ohmic
value
3 watt
4.5 watt
7 watt
ꢀ 0.005ꢀ 13FPR005Eꢀ 14FPR005Eꢀ 17FPR005Eꢀ
ꢀ 0.010ꢀ 13FPR010Eꢀ 14FPR010Eꢀ 17FPR010Eꢀ
ꢀ 0.015ꢀ 13FPR015Eꢀ 14FPR015Eꢀ 17FPR015Eꢀ
ꢀ 0.020ꢀ 13FPR020Eꢀ 14FPR020Eꢀ 17FPR020Eꢀ
ꢀ 0.025ꢀ 13FPR025Eꢀ 14FPR025Eꢀ 17FPR025E
ꢀ 0.030ꢀ 13FPR030Eꢀ 14FPR030Eꢀ 17FPR030Eꢀ
ꢀ 0.040ꢀ 13FPR040Eꢀ 14FPR040Eꢀ 17FPR040Eꢀ
ꢀ 0.050ꢀ 13FPR050Eꢀ 14FPR050Eꢀ 17FPR050Eꢀ
ꢀ 0.060ꢀ 13FPR060Eꢀ 14FPR060Eꢀ 17FPR060Eꢀ
ꢀ 0.070ꢀ 13FPR070Eꢀ 14FPR070Eꢀ 17FPR070E
ꢀ 0.075ꢀ 13FPR075Eꢀ 14FPR075Eꢀ 17FPR075Eꢀ
ꢀ 0.080ꢀ 13FPR080Eꢀ 14FPR080Eꢀ 17FPR080Eꢀ
ꢀ 0.090ꢀ 13FPR090Eꢀ 14FPR090Eꢀ 17FPR090Eꢀ
ꢀ 0.100ꢀ 13FPR100Eꢀ 14FPR100Eꢀ 17FPR100E
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
45
OHMITE [ OHMITE MFG. CO. ]
