POWER SOLUTION - NIKKOHM
50W to 500W HIGH POWER WIRE WOUND RESISTORS
FLAT SHAPED ALUMINUM HOUSED
IRN50-IRN150
IRF150-IRF500
Features and Applications
Non-inductive, flat shaped aluminum housed wire wound fixed resistors with 50W to 500W..
Minimum resistance of 1ohm, +/-0.5% tolerance available.
10mm thickness allows excellent heat extrusion from resistor.
Narrower body (IRN) will be suitable for high density installation.
Light weight silicone filled insulation and higher temperature operating cement filled
insulation are prepared.
Strong over load characteristics are fit for applications of industrial power electronics,
switching power supplies, braking resistors for motor control electronics, rush current
protection in automotive electronics, industrial power supplies.
Dimensions (mm)
D B
G
300+/-10
F
E
A
F
C
Type
IRN 50
IRN100
IRN150
IRF100
IRF150
IRF200
IRF250
IRF300
IRF400
IRF500
A
70+/-1
120+/-1
170+/-1
90+/-1
120+/-1
150+/-1
180+/-1
210+/-1
270+/-1
330+/-1
B
60+/-0.3
60+/-0.3
60+/-0.3
80+/-0.3
80+/-0.3
80+/-0.3
80+/-0.3
80+/-0.3
80+/-0.3
80+/-0.3
C
10
10
10
10
10
10
10
10
10
10
D
50+/-0.3
50+/-0.3
50+/-0.3
70+/-0.3
70+/-0.3
70+/-0.3
70+/-0.3
70+/-0.3
70+/-0.3
70+/-0.3
E
50+/-0.3
100+/-0.3
150+/-0.3
70+/-0.3
100+/-0.3
130+/-0.3
160+/-0.3
190+/-0.3
250+/-0.3
310+/-0.3
F
-
-
-
-
-
-
-
95
125
155
G dia.
4-5.3 dia.
4-5.3 dia.
4-5.3 dia.
4-5.3 dia.
4-5.3 dia.
4-5.3 dia.
4-5.3 dia.
6-5.3 dia.
6-5.3 dia.
6-5.3 dia.
Weight(g)
100
160
220
155
200
245
290
335
430
525
POWER SOLUTION - NIKKOHM
50W to 500W HIGH POWER WIRE WOUND RESISTORS
FLAT SHAPED ALUMINUM HOUSED. IRN50-IRN150, IRF150-IRF500
Ordering Information
P/N
IRN100S1R0J 0.75sqmm
IRN150C1K0F
IRF200S100RJ
IRF500C10RJ 2sqmm
Type
IRN100
IRN150
IRF200
IRF500
Resistance
(ohm)
1-420
1-1.1K
1-1.75K
1-1.1K
1-1.75K
1-2.2K
1-2.79K
1-3.5K
1-4.45K
1-5.78K
Insulating
Material
S(Silicone)
C(Cement)
S(Silicone)
C(Cement)
Tolerance
(%)
Resistance
1 ohm
1K ohm
100 ohm
10 ohm
Dielectric
strength
Standard
AC1000V,
Available AC
1500V
2500V
3000V
4500V
at 2mA current
Tolerance
+/-5%(J)
+/-1%(F)
+/-0.5%(D)
+/-5%(J)
Additional
Lead wire
Specifications
Type
IRN 50
IRN100
IRN150
IRF100
IRF150
IRF200
IRF250
IRF300
IRF400
IRF500
Lead wire
Rating power
with heat sink
50W
100W
150W
100W
150W
200W
250W
300W
400W
500W
+/-0.5(D)
+/-1.0(F)
+/-2.0(G)
+/-5.0(J)
+/-10(K)
Lead wire
2mm
1.25 mm
2
NA
1-420
NA
1-1.1K
NA
1-1.75K
NA
1-1.1K
NA
1-1.75K
1-4 ohm
4.1 -
1-5 ohm
5.1 -
1-6 ohm
6.1 -
1-8 ohm
8.1 -
1-10 ohm
10.1 -
2
Performance
Term
Temperature Coefficient
Insulation Resistance
Operating Temperature, cement filled
Operating Temperature, silicone filled
Short Time Overload
Moisture Resistance
Thermal Shock
Vibration
Humidity
Load Life
Specifications
+/-260 ppm/C
20Megohm min.
-55C - +200C
-55C - +150C
+/-(1.0%+0.05ohm)
+/-(2.0%+0.05ohm)
+/-(1.0%+0.05ohm)
+/-(1.0%+0.05ohm)
+/-(2.0%+0.05ohm)
+/-(2.0%+0.05ohm)
Conditions
Maximum
Dry condition.
5 times rating power, 5 seconds.
40C, 95%RH, DC100V case to leads, 500H
Heating with rating power 30 minutes, –25C
15 minutes
10-50-10Hz, 1 minute/cycle, 2 hours, x , y
and z direction.
40C, 95%RH, 0.1 rating power, 90min ON,
30min OFF, 500hours.
Rating power, 90min ON, 30min OFF,
500hours.
Derating
%Rating Watts
Note for derating, cement filled type.
(1) Attached on chassis for 150W to 500W and free air
for 50W-100W.
(2) Free air for 150W.
(3) Free air for 200W and 250W.
(4) Free air for 300W to 500W.
Note for lead wire:
0.75 sqmm leads is available.
100 (1) 25C
80
60
40
20
0
-50
0
(2)
(3)
(4)
280C
50 100 150 200 250 300
Ambient Temperature (C)
20030114
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