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POWER TYPE WIRE-WOUND RESISTOR
xMulti-terminal types and variable types available
xSmall in size but capable of carrying high power load
xResistance value unchanged after long use, good resistively to short time overload
xHigh resistively to heat, low temp. coefficient, and the change in resistance with temperature
is linear
xToo low or too high ohmic value can be supplied on a case-to-case basis
Part No. Style Max.
Watts
Resistance
Range
A B C D
AQ20/AL20 QH/QL-20W 20W 19 50 19 10 1 ~ 10K
AQ25/AL25 QH/QL-25W 25W 19 60 19 10 2~ 12K
AQ30/AL30 QH/QL-30W 30W 19 75 19 10 2 ~ 15K
AQ40/AL40 QH/QL-40W 40W 19 90 19 10 2 ~ 20K
AQ50/AL50 QH/QL-50W 50W 28 75 31 16 3 ~ 25K
AQ60/AL60 QH/QL-60W 60W 28 90 31 16 3 ~ 30K
AQ80/AL80 QH/QL-80W 80W 28 115 31 16 3 ~ 40K
AQA0/ALA0 QH/QL-100W 100W 28 140 31 16 3 ~ 50K
AQA2/ALA2 QH/QL-120W 120W 28 165 31 16 4 ~ 60K
AQA5/ALA5 QH/QL-150W 150W 28 195 31 16 4 ~ 70K
AQB0/ALB0 QH/QL-200W 200W 28 254 31 16 5 ~ 100K
AQC0/ALC0 QH/QL-300W 300W 42 254 33 25 8 ~150K
AQD0/ALD0 QH/QL-400W 400W 42 330 38 25 10 ~ 200K
AQF0/ALF0 QH/QL-600W 600W 42 420 38 35 10 ~ 200K
Dimension (mm) (±1)
Power Type Ribbon Wire-Wound Resistors
Derating Curve Heat Rise Curve
Rating & General Specifications:
QR Type QRZG Type
2004 - 2005
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Part No. Style Max.
Watts
Resistance
Range
D E F G H J l L M
ARA2 QR80 120W 33 16 28 26 22 6 115 148 167 0.2 ~ 4
ARA5 QR100 150W 33 16 28 26 22 6 140 173 192 0.3 ~ 5
ARA8 QR120 180W 33 16 28 26 22 6 165 198 217 0.3 ~ 6
ARBB QR150 225W 33 16 28 26 22 6 195 228 247 0.4 ~ 8
ARC0 QR200 300W 33 16 28 26 22 6 254 287 306 0.5 ~10
ARD5 QR300 450W 48 25 40 40 40 9 254 308 334 0.8 ~ 15
ARF0 QR400 600W 48 25 40 40 40 9 330 384 410 1 ~ 20
Dimension (mm) (±1)
Note: Part number & ordering procedure the same as wire-wound resistors.
POWER TYPE WIRE-WOUND RESISTOR
Performance Specifications:
Characteristics Test Methods Limits
Temperature coefficient
JIS – C – 5202 5.2
Natural resistance change per temp. degree centigrade
R2 – R1
x 106 (PPM / ºC)
R1(t2-t1)
R1 : Resistance value at room temperature (t1)
R2 : Resistance value at room temp. plus 100ºC (t2)
± 350PPM / °C
< 20 ± 400PPM / °C
Short – time overload
JIS – C – 5202 5.5
Permanent resistance change after the application of a potential of 2.5
times RCWV for 5 seconds.
Resistance change rate is
± (2% + 0.05)
No evidence of mechanical damage
Terminal Strength
JIS – C – 5202 6.1
Direct Load:
Resistance to a 2.5 kg. direct load for 10 seconds in the
Direction of the longitudinal axis of the terminal leads.
Twist Test:
Terminal leads shall be bent through 90º at a point of about 6mm
from the body of the resistor and shall be rotated through 360º about
the original axis of the bent terminal in alternating
direction for a total 3 rotations.
No evidence of mechanical damage
Resistance to Soldering Heat
JIS – C – 5202 6.4
Permanent resistance change when leads immersed to 3.2 mm to 4.8
mm from the body in 350°C ± 10°C solder for 3 ± 0.5 seconds
Resistance change rate is ± ( 1%+0.05 )
No evidence of mechanical damage.
Solderability
JIS – C – 5202 6.5
The area covered with a new, smooth, clean, shiny and continuous
surface free from concentrated pinholes.
Test temp. of solder: 235°C ± 5°C
Dwell time in solder: 3 +0.5/ -0 seconds
95% coverage Min.
Load life in humidity
JIS - C - 5202 7.9
Resistance change after 1,000 hours operating at RCWV with
duty cycle of (1.5 hours “on”, 0.5 hour “off”) in a humidity test
chamber controlled at 40°C ± 2°C and 90 to 95% relative
humidity.
Resistance change rate is
± (5% + 0.05)
No evidence of mechanical damage
Load life
JIS - C - 5202 7.10
Permanent resistance change after 1,000 hours operating at
RCWV with duty cycle of (1.5 hours “on”, 0.5 hour “off”) at
70°C ± 2°C ambient.
Resistance change rate is
± (5% + 0.05)
No evidence of mechanical damage
2004 - 2005
