
POWER SOLUTION - 
DBL
30W HIGH POWER RESISTORS
RNP20S 
Specifications 
Items 
Specification-Performance 
Rating Power 
30 Watt 
Rating Power 
1 Watt 
Heat Resistance 
3.3 C/W 
Resistance Range 
0.01-0.91ohm 
0.1-9.1ohm 
Nominal Resistance 
E6 
E24 
TCR(ppm/K) 
250(H) 
100 (A) 
Tolerance 
5%(J) 
1% (F) 5% (J)
Operation Temp. 
-55C to+155C 
Max. Operating Volt. 
500V or 
R
P
 
Withstanding Volt. 
DC2000 Volt 
Load Life 
+/-(1.0 %+0.05 ohm) 
Humidity 
+/- (1.0 %+0.05 ohm) 
Temp. Cycle 
+/- (0.25 %+0.05 ohm) 
Soldering Heat 
+/- (0.1 %+0.05 ohm) 
Solder ability 
Over 95% of surface 
Insulation Resistance 
Over 1,000 Meg ohm 
Vibration 
+/- (0.25 %+0.05 ohm) 
Note: At resistance from 220 to 51kohms rating power shall be restricted in 20W.  
Test Conditions 
-55 to 25 C flange temperature 
Free air. 
Hot spot to flange 
220-51k ohm are available, see Note 
Include 2.5 and 5.0 
-55 to +155 C 
60 seconds. Actual 2000VAC 
25 C,  90  min.ON, 30 min.OFF, 1000 hours. 
40C, 90-95%RH, DC 0.1W, 1000 hours. 
-55 C,30 min.,+155 C,30 min., 5cycles 
350+/-5 C, 3seconds, 
230+/-5 C, 3seconds. 
Between terminals and tab. 
10-220ohm 
E24 
50 (C) 
+/-1% (F) 
20050212 
Temperature Rise
Temperature Rise (C) 
140 
RNP20SC500 F 
120 
100 
     Hot spot temperature on resistor based 
 80  referenced from flange temperature. 
 60 
 40 
 20 
  0 
    0              10              20              30
        Power (Watt
) 
Frequency Characteristics 
Impedance (ohm) 
1k 
RNP-20S C1K0F 
        RNP-20S C101F
100 
        RNP-20S C100F 
  10 
        RNP-20S C500F 
        RNP-20S C220F 
   1 
    100k      1M       10M     100M      1G 
                                         Frequency (Hz)
Pulse Energy Durability 
One time rectangular impulse.  Pulse Peak Watt (Watts) 
10K 
        RNP-20SC100F 
 1K 
100 
 10 
   1μ        10μ      100μ      1m     10m     100m 
                                    Pulse With (seconds) 
Note: 
(1) Insulating material is unnecessary between flange and resistors, flange and resistor is separated by alumina 
substrate. 
(2) At surface mount soldering, temperature profile in Flange shall not exceed 220C. 
(3) Using heat conduction grease on surface of flange is recommended. 
(4) Heat resistance between resistor and flange is 3.3 C/W.  Heat design will be done, as resistor temperature shall be 
under 155C in operation. 
(5)  0.1% tolerance resistors and over 220ohm resistance are available, please call factory. 
Derating
Rating Power (W) 
                  +25C 
  40 
  30 
  20 
  10 
                                         +155C 
   0 
    -50      0       50      100     150      200 
                          Flange Temperature (C)
Lead Free