14AFR Current Sense resistors feature a high temperature ceramic body which
affords the user higher power
densities than similar products
which utilize silicone based
epoxy molding compounds.
The internal construction
involves a straight, low inductance, 3-piece welded metal
element at 1% tolerance. This
series is stocked in 9 popular
resistance values for easy
accessibility.
Features
• Ideal for current sensing applications
• 1% Tolerance standard
• Fixed resistance measuring
point
• Low inductance
• RoHS compliant
Material
Terminals: Solder-plated copper
terminals or copper clad steel
depending on ohmic value.
Encapsulation: Ceramic cased
body
Derating: Linearly from
4W@70°C to 0W@250°C
Electrical
Max.Voltage: √(PxR) RMS
Climatic Category: 55/200/56
TCR: Varies from +150 to
+1100ppm/°C based on resistance value. TCR increases as
resistance value reduces from
51 to 4milliohms. TCR is tested
as per IEC Specification 115-1
Clause 4.8.4.2
Tolerance: ±1% standard.
Others available.
Power rating: 4W@70°C
Dielectric withstanding voltage:
1000 VRMS for 3 and 5 watt;
500 VRMS for 2 watt.
Insulation resistance:
Not less than 1000MΩ.
Thermal EMF:
Less than ±2µV/°C.
Temperature range:
-55°C to 275°C.
Performance Characteristics
Test
Endurance at
Rated Power
Terminal Strength
Solderability
Resistance to
Solder Heat
Long Term
Damp Heat
Climatic Sequence
Overload
14A Series
S p e c i f i ca t i ons
36mm ±4
Maximum ∆R
∆R <5%
Pull Strength of 50N for 10sec, IEC115-1,
Clause 4.16 Test Ua1
95% Coverage as per MIL STD 202F, Test 208
-260°C for 10sec as per IEC115-1, Clause 4.18
∆R <0.5%
∆R <5%
∆R <5%
6.40mm ±.5
0.80mm ±.05
18mm ±1
40mm
Measuring Length
Dimensions (in. / mm)
Series Wattage Ohms
Length
Diam.
“M”
Lead
14A
4 0.004-0.051 0.709 / 18 0.252 / 6.40 1.575 / 40 0.031/0.80
o r d e r i n g i n f o r m at i o n
Wattage
A = Alumina
Molded Body
RoHS Compliant
14AFR051E
10 Series
Tolerance Ohm Value
F = 1%
Example:
R050= 0.05Ω
Check product availability at www.ohmite.com
StD. part numbers
Condition
1000hrs Test
-90-95% RH @40°C for 56 Days, IEC115-1,
Clause 4.24
As per IEC 115-1, Clause 4.23
5 times rated wattage for 5 seconds
Alumina Body
Current Sense
Ohmic
value
0.004
0.005
0.008
0.010
0.015
0.022
0.033
0.047
0.051
Part
Number
14AFR004E
14AFR005E
14AFR008E
14AFR010E
14AFR015E
14AFR022E
14AFR033E
14AFR047E
14AFR051E
