POWER RESISTORS MOR Series: Metal Oxide
INTRODUCTION
Metal Oxide Resistors offer excellent performance in applications where stability and uniformity of characteristics are desired. The complex Oxide materials used gives this series long-term stability, low temperature coefficient and negligible inductance, making it a suitable replacement for carbon composition resistors, high surge/overload capability and flameproof construction make this an alternative for many lower power wire wound resistor.
FEATURES
•Excellent long-term stability •Complete flameproof construction •High surge/overload capability •Wide resistance range •Standard tolerance: ±5% (Consult factory for 1% & 2%) •Coating and mark resist Trichloroethylene, Freon, And other cleaning agents. •Improved stability, dissipation, TCR available. Consult factory. •Lower cost alternative to carbon composition resistors.
TEMPERATURE RISE
Temp. Rise (°C)
240 180 120 60 0 0 1 2 3 4 5 6 7 8 100 200 400 300 500
DERATING CURVE
100 80 60 40 20 0
70°
Rated Load (%)
Applied Wattage
200°
DIMENSIONS(mm)
0
50
100
150
200
250
300
Ambient Tempurature (°C)
Type MOR25 MOR50S MOR50 MOR100 MOR200 MOR300 MOR500
Small Size L MOR50M
Dimension D H 20 20 20 30 ± 3 30 ± 3 30 ± 3 30 ± 3 d 0.5 ± 0.05 0.6 ± 0.10 0.7 ± 0.05 0.8 ± 0.10 0.8 ± 0.05 0.8 ± 0.05 0.8 ± 0.05
Standard Tape T52 T52 T52 T73 T73 T73 T73
Standard Package 5000 5000 2500 2000 1000 1000 1000*
* Ammo only
6.5 ± 0.5 2.5 ± 0.5 8.5 ± 0.5 2.5 ± 0.5
MOR100S MOR200S MOR300S MOR500S
9±1 11 ± 1 16 ± 1 18 ± 1 25 ± 1
4±1 4.5 ± 0.5 5.0 ± 0.5 6±1 8.5 ± 1
• Special tape to tape size by request
SPECIFICATIONS
Test Items Rating Wattage Resistance Temp. Coef. Short Time Overload Condition at 70°C -55°C ~ +200°C 2.5X if rated voltage for 5 sec. AC or DC Voltage Withstanding 700V AC 1 min. Insulation Resistance 500V megger Temp. Cycle -30°C ~ 85°C, 5 Cycles Load Life 70°C on-off cycles 1000 hrs. Moisture-proof Load Life 70°C on-off cycles 1000 hrs. Incombustibility 10X of rated wattage for 5 min. Max. Working Voltage Max. Overload Voltage Resistance Range
•Cement body types are available (MSQ). See page C2DC01.
MOR25 MOR50(S)(M) MOR100(S) MOR200(S) MOR300(S) MOR500(S) 1/4W 1/2W 1W 2W 3W 5W 200PPM/°C 200PPM/°C 200PPM/°C 200PPM/°C 200PPM/°C 200PPM/°C ±1% ±1% ±1% ±1% ±1% ±1% No Change 100,000M ±1% ±3% ±3% No Flame 250V 500V 0.22 - 33K No Change 100,000M ±1% ±3% ±3% No Flame 250V 500V 0.5 - 33K No Change No Change No Change No Change 100,000M 100,000M 100,000M 100,000M ±1% ±1% ±1% ±1% ±3% ±3% ±3% ±3% ±3% ±3% ±3% ±3% No Flame No Flame No Flame No Flame 350V 350V 500V 750V 600V 600V 800V 1000V 0.5 - 1M 0.5 - 1M 0.5 - 1M 0.5 - 100K
PART NUMBER EXAMPLE MOR 50 R - 10K - J
RFE International • Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail Sales@rfeinc.com
C2CB04 REV2004.5.6
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