Metal Oxide Power (1 & 2 Watt)

R1 (or 2) WM - ........

Dowpak Part numbering System:

1 Watt: R1WM - value - Qty*
2 Watt: R2WM - value - Qty**

*      Blanc=5 pcs per pack, C=100 pack, M=1000 pack
**      Blanc=4 pcs per pack, C=100 pack, M=1000 pack

Dimensions:

WATTAGE L MAX. D MAX. d  +.02 / -.05 H +3
1 W 10 4 0.7 28
2 W 12 5 0.7 28
         

CHARACTERISTICS LIMITS
Operating temperature range -55 ~ +200°C (Derated over 70°C)
Temperature coefficient ± 350 ppm / °C
Short time overload D R=< ± (1% + 0.05  ohm)
Temperature cycling D R=< ± (1% + 0.05  ohm)
Soldering effect D R=< ± (1% + 0.05  ohm)
Vibration D R=< ± (1% + 0.05  ohm)
Moisture resistance D R=< ± (5% + 0.10  ohm)
Load life (1000 hrs.) D R=< ± (70°C, 1000hrs.)
Power rating @ 70°C 1W    2W
Maximum working voltage @ 70°C 350V    350V
Maximum overload voltage @ 70°C 600V    600V
Resistance range ±5% (J) Tol. 1 ohm - 100K ohm 1 ohm - 100K ohm
  ±2% (G) Tol. 10 ohm - 100K ohm    10 ohm - 100K ohm
Resistance value availability E-24     E-24
Axial taping availability  No     No

•    Flame retardant
•    High purity ceramic core
•    ± 5% tolerance

TABLE OF VALUES IN  ohm

0.47 1.0 2.4 5.6 13 33 75 180 430 1.0K 2.4K 5.6K 13K 33K 75K 180K 430K
0.5 1.1 2.7 6.2 15 36 82 200 470 1.1K 2.7K 6.2K 15K 36K 82K 200K 470K
0.51 1.2 3.0 6.8 16 39 91 220 510 1.2K 3.0K 6.8K 16K 39K 91K 220K 510K
0.56 1.3 3.3 7.5 18 43 100 240 560 1.3K 3.3K 7.5K 18K 43K 100K 240K 560K
0.62 1.5 3.6 8.2 20 47 110 270 620 1.5K 3.6K 8.2K 20K 47K 110K 270K 620K
0.68 1.6 3.9 9.1 22 51 120 300 680 1.6K 3.9K 9.1K 22K 51K 120K 300K 680K
0.75 1.8 4.3 10 24 56 130 330 750 1.8K 4.3K 10K 24K 56K 130K 330K 750K
0.82 2.0 4.7 11 27 62 150 360 820 2.0K 4.7K 11K 27K 62K 150K 360K 820K
0.91 2.2 5.1 12 30 68 160 390 910 2.2K 5.1K 12K 30K 68K 160K 390K 910K
1.0M  

 

 

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This Page was last modified on Friday, April 05, 2002.