RoHS

POWER -NIKKOHM
250W, 300W, SOT227
CHASSIS MOUNT NON-INDUCTIVE
HIGH POWER RESISTORS

RPG250, RPG300

Features and Applications
Small size TO227, 200W high power resistor. Attaching an air-cooled heat sink or water-cooling isnecessary.
Rated power is 300W (one element) or 250W (two elements).
M4 screw terminals, very low series inductance.
Higher density packing, vibration-proof and perfect heat dissipation possible.
Applications include snubber resistors for power supplies, gate resistors, pulse generators, high frequency
amplifiers, dumping resistance of theater audio equipment of dividing network of loud speaker systems,etc.

Dimensions
4-J

4-DEB

4 31 2mm
38.0
25.0(14.0)
4.2
13.0
15.0
30.0
12.0
M4+/- mm+/-0.2+/-0.2+/-0.5+/-0.1+/-0.3+/-0.4+/-0.1+/-0.2

樹脂ケース
充填樹脂
抵抗膜
端子板
電極
絶縁基板
銅板フランジ

H

4-4RA
B
CDE
FG
HJ

6.0+/-0.2

F
G
A

Case
Filling
Resistor
Terminal
Conductor
AluminaCu flange

Includes terminal screws（M4/6mm）

Schematics
4R134R134R134R234R234R33R212RPG300X

12RPG300Y

12RPG300Z

1R12RPG250X

1R12RPG250Y

1R12RPG250Z

Nikkohm Co., Ltd. 3-31-2640 Minamicho, Misawa, Aomori 033-0036 Japan TEL: +81-176-53-2105, FAX: +81-176-53-2106© Nikkohm Co., Ltd. All rights reserved. URL: http://www.nikkohm.co.jp & http://www.nikkohm.com / e-mail: info@nikkohm.com

RoHS

POWER -NIKKOHM

RPG250, RPG300

250W, 300W, SOT227

CHASSIS MOUNT NON-INDUCTIVE HIGH POWER RESISTORS
Ordering Information
TypeRPG300|RPG250
RPG300Connection
X|XYZTCR|
100ppm/°C

1.0
1.1
1.2
1.3
1.5
3.6
3.9
4.0
4.3
4.7
RPG250 contains two or three resistors.

1.6
5.0

1.8
5.1

Resistance
10R
|
10R
R1=R2=R3
E24+ (*)
2.0
5.6

2.2
6.2

ToleranceJ|
J (5%)

2.4
6.8

2.5
7.5

2.7
8.0

CodeZ00|
Z00(RoHS)

3.0
8.2

3.3
9.1

Specifications and Performances

Nominal Resistance
TCRTolerance
Operation Temp.
Max. Applied Voltage
Withstanding Voltage
Load Life
Humidity

RPG250RPG300250 Watts
300 Watts
1ohm to 1Kohm
1ohm to 1Kohm
DualSingleE24+
E24++/-100 ppm/K(A)+/-100 ppm/K(A)+/-5%(J)+/-5%(J)-55 - +155 deg C-55 - +155 deg C
Either less than 700V or E = P ⋅ R2500 VAC⊿R+/-1.0 %⊿R+/-1.0 %Temperature Cycle⊿R+/-1.0 %Insulation ResistanceVibration

Over 1000 Meg ohm⊿R+/-0.25 %Rating Power
Resistance Range

Derating Curve,

60 seconds.
25C, 90 min.ON, 30min.OFF, 1000hours.
40C, 90 to 95%RH, DC0.1W, 1000hours.
-55C, 30 min.,+155C 30min., 20cycles. (-55C, 30 min.,+120C, 30min.,20cycles. at RPG300)
Between terminals and flange.

With 0.1deg C/W heat sink(deg C)
160
14025 deg C

100

Additionally, 2.0 and 5.0.
For -55 to +120 deg C, typical, over 1 ohm

Temperature Rise, RPG300
RPG250, RPG300％ Power Rating

Test Conditions
At flange temperature -55 to +25 deg C

12080

100

60

80

Resistor temperature

60

40155 deg C

200-500+50+100+150 +200
Flange Temperature (deg C)

40

Flange temperature

2000100

200
Applied Power300 (W)

Materials
Flange: Ni plated copper plate.
Substrate: Al2O3 alumina substrate.
Resistor: Metal film resistor.
Case:Nylon 66 with glass fiber
Terminals: Ni plated copper alloy
Screw: 4-M4/6mm depth.
20190901
Nikkohm Co., Ltd. 3-31-2640 Minamicho, Misawa, Aomori 033-0036 Japan TEL: +81-176-53-2105, FAX: +81-176-53-2106© Nikkohm Co., Ltd. All rights reserved. URL: http://www.nikkohm.co.jp & http://www.nikkohm.com / e-mail: info@nikkohm.com