HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08
Custom solutions are available.
HOW TO ORDER
RST 25-A 4X-100-100 J Y B
Packaging
B = bulk
TCR
(ppm/°C)
Z = +100
Tolerance
J = +5% K= +10%
Resistance 2
(leave blank for 1 resistor)
Resistance 1
R10 = 0.1 ohm
1R0 = 1.0 ohm
100 = 10 ohm
101 = 100 ohm
102 = 1.0K ohm
FEATURES
TO227 package in power ratings of 150W,
250W, 300W, 600W, and 900W
M4 Screw terminals
Available in 1 element or 2 elements resistance
Very low series inductance
Higher density packaging for vibration proof
performance and perfect heat dissipation
Resistance tolerance of 5% and 10%
APPLICATIONS
For attaching to air-cooled heat sink or water
cooling applications
Snubber resistors for power supplies
Gate resistors
Pulse generators
High frequency amplifiers
Dumping resistance for theater audio equipment
on dividing network for loud speaker systems
Screw Terminals/Circuit
2X, 2Y, 4X, 4Y, 4Z
Package Shape
(refer to schematic drawing)
A or B
Rated Power
15 = 150 W
25 = 250 W
20 = 200 W
30 = 300 W
Series
High Power Resistor, Non-Inductive, Screw Terminals
60 = 600W
90 = 600W (S)
CONSTRUCTION
1
2
3
4
5
6
Case
Filling
Resistor
Terminal
ALO. ALN
Ni Plated Cu
DIMENSIONS (mm)
Shape
A
B
RST20-B2X, B2Y, B4Z
RST30-B2X, B2Y, B4Z
RST60-B2X, B2Y, B4Z
RST15-B4X, B4Y
RST25-B4X, B4Y
RST55-B4X, B4Y
38.0
±
0.2
25.0
±
0.2
11.8
±
0.5
4.2
±
0.1
13.0
±
0.3
15.0
±
0.4
30.0
±
0.1
10.0
±
0.2
M4, 10mm
Series
RST20-A2X, A2Y, A4Z
RST15-A4X, A4Y
RST25-A4X
RST30-A4Z
RST60-A4X
RST90-A4Z
Depth of terminal screw M4 10mm, screws are excluded
A
B
C
D
E
F
G
H
J
38.0
±
0.2
25.0
±
0.2
13.0
±
0.5
4.2
±
0.1
13.0
±
0.3
15.0
±
0.4
30.0
±
0.1
10.0
±
0.2
M4, 10mm
38.0
±
0.2
25.0
±
0.2
15.0
±
0.5
4.2
±
0.1
13.0
±
0.3
15.0
±
0.4
30.0
±
0.1
12.0
±
0.2
M4, 10mm
38.0
±
0.2
25.0
±
0.2
15.0
±
0.5
4.2
±
0.1
13.0
±
0.3
15.0
±
0.4
30.0
±
0.1
12.0
±
0.2
M4, 10mm
CIRCUIT LAYOUT
SCHEMATIC
Body Shape A
Body Shape B
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618
TEL: 949-453-9888 FAX: 949-453-8889
1
HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08
SPECIFICATIONS
Series
RST15*-
RST15-
RST20*-
RST20-
RST25*-
RST25-
RST30*-
RST30-
RST55-
RST60-
RST60-
RST90-
Body Type/Circuit
A4X, A4Y
B4X, B4Y
A2X, A2Y, A4Z
B2X, B2Y, B4Z
A4X
B4X, B4Y
A4Z
B2X, B2Y, B4Z
B4X, B4Y
A4X
B2X, B2Y, B4Z
A4Z
Rated
Power
150 W
150 W
200 W
200 W
250 W
250 W
300 W
300 W
550 W
600 W
600 W
600 W
Resistance
Dual
Dual
Single
Single
Dual
Dual
Single
Single
Dual
Dual
Single
Single
Resistance
Range (Ω)
0.1 ~ 1.0K
0.1 ~ 1.0K
0.1 ~ 1.0K
0.1 ~ 1.0K
1.0 ~ 1.0K
0.1 ~ 1.0K
1.0 ~ 1.0K
0.1 ~ 1.0K
50.0 ~ 1.0K
100 ~ 1.0K
50.0 ~ 1.0K
100 ~ 1.0K
EIA Values
E24
E24
E24
E24
E24
E24
E24
E24
E24
All
E24
All
TCR
(ppm/°C)
±100
±100
±100
±100
±100
±100
±100
±100
±100
±100
±100
±100
Tolerance
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±10%
±5%
±10%
Operating Temp.
-55°C ~ +155°C
-55°C ~ +120°C
-55°C ~ +155°C
-55°C ~ +120°C
-55°C ~ +120°C
-55°C ~ +120°C
-55°C ~ +120°C
-55°C ~ +120°C
-55°C ~ +120°C
-55°C ~ +155°C
-55°C ~ +120°C
-55°C ~ +155°C
PERFORMANCE
Item
Rated Power
Maximum Applied Voltage
Withstanding Voltage
Load Life
Humidity
Temperature Cycle
Short Time Overload
Soldering Heat
Solderability
Insulation Resistance
Vibration
Flammability
RST15*, RST20*
Per specification
E =
√P*R
2500V DC
±
(1.0% + 0.05
Ω)
±
(1.0% + 0.05
Ω)
±
(1.0% + 0.05
Ω)
±
(0.25% + 0.05
Ω)
n/a
n/a
> 1,000 Meg ohm
±
(0.25% + 0.05
Ω)
UL94V-O
All other Series
Per specification
E =
√P*R
2500V DC
±
(1.0% + 0.05
Ω)
±
(1.0% + 0.05
Ω)
±
(1.0% + 0.05
Ω)
±
(0.25% + 0.05
Ω)
±
(0.25% + 0.05
Ω)
n/a
> 1,000 Meg ohm
±
(0.25% + 0.05
Ω)
UL94V-O
Condition
RST15, RST20: with heat sink, 0.9 K/W
All Other Models: at flange -55°C ~ +25°C
60 seconds
25°C, 90 min on, 30 min off, 1000 hrs
40°C, 90 ~ 95% RH, DC 0.1W, 1000 hrs
*70°C, 90 ~ 95% RH, DC 0.1W, 1000 hrs
-55°C, 30 min., +155°C, 30 min.; 20 cycles
-55°C, 30 min., +120°C, 30 min.; 20 cycles
Rated Power x 2.5, 2 sec. with heat sink
350°C
±
5°C, 3 seconds
Between Terminals and Flange
PULSE OPERATION DURABLITY
1 = RST30- B2X, B2Y, B4Z
2 = RST25-B4X, B4Y (one resistor)
Pulse Peak Power (Watts)
The figure illustrating pulse load shows the safe operation area, which measured
experimentally and which can operate with a rectangle pulse of a long cycle. However,
data does not guarantee the operation about the continuous pulse load of a short cycle in
which a resistor carries out a temperature rise with average electric power. Pulse peak
power recommends operating within the rated electric power. Pulse operation of models
RST60-B2X, B2Y, B4Z are the same as models RST30- B2X, B2Y, B4Z.
NOTES
For RST60-A4X and RST90-A4Z
When water cooled heat sink is used, maintaining a flange temperature of 25°C is difficult.
When the flange temperature is over 25°C, the rating will be decreased as illustrated in
the derating curve. In short pulse applications, the peak power can not exceed over
600W.
Pulse Width (seconds)
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618
TEL: 949-453-9888 FAX: 949-453-8889
2
HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08
DERATING CURVE
RST15-A4X, A4Y
% Rated Power
RST20-A2X, A2Y, A4Z
% Rated Power
RST25-A4X
RST30-A4Z
Flange Temperature (°C)
RST15-B4X, B4Y
RST20-B2X, B2Y, B4Z
% Rated Power
RST25- B4X, B4Y
RST30- B2X, B2Y, B4Z
Flange Temperature (°C)
RST55-B4X, B4Y
% Rated Power
RST60-A4X, B2X, B2Y, B4Z
Flange Temperature (°C)
Flange Temperature (°C)
TEMPERATURE RISE
RST20-A2X, A2Y, A4Z with 0.2K/W heat sink
Temperature Rise (°C)
RST30-A4Z with 0.1K/W heat sink
Temperature Rise (°C)
RST30- B2X, B2Y, B4Z with 0.1° C/W heat sink
Temperature Rise (°C)
RST60-AX4, B2X, B2Y, B4Z
Temperature Rise (°C)
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618
TEL: 949-453-9888 FAX: 949-453-8889
3
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