MO (FLAME-PROOF COATING TYPE)
     
INTRODUCTION   FEATURE

Liquid SnCI 4 heated 400-700°C sprayed on ceramic rod and become a thin film on the surface of rod. Then SbCI 3 added to make it acid film. As the film is strong metal oxided, it will last for years with very little change of resistance. MO series are especially fit for the requirements of large load or high temperature operation.

  
  • Excellent long-term stability and reliability
  • Meet MIL-R-22684B requirements
  • Extremely low for annual shift
  • Excellent flame retardant coating with "freon" resistant performance
  • Can produce high resistance value to replace wirewound resistor with lower cost
  • Tolerance available: ±5%, ±2%
  • Voltage available: 1/4W, 1/2W, 1W, 2W, 3W, 4W, 5W

CHARACTERISTICS

Requirements Characteristics Test method
Temperature Coefficient ± 100ppm Typ. 300ppm Max. MIL-R-22684B,4,6,11
Insulation Resistance ± 10,000M Ohm  Min. MIL-R-22684B,4,6,11
Load Life(1,000 hours) ± 3% (70°C, 1000hrs) MIL-R-22684B,4,6,12
Short-time Overload ± (0.5% + 0.05 Ohm) MIL-R-22684B,4,6,5
Temperature Cycling ± (1% + 0.05 Ohm) MIL-R-22684B,4,6,3
Moisture Resistance ± (1% + 0.05 Ohm) MIL-R-22684B,4,6,10
Shock and Vibration ± (0.2% + 0.05 Ohm) MIL-R-22684B,4,6,14
Soldering Heat ± (0.5% + 0.050 Ohm) MIL-R-22684B,4,6,9
Voltage Coefficient 0.001%/V  
Incombustibility 1~ 16 Times E =PXR, 5 Min.  

DERATING CURVE

SPECIFICATIONS

TYPE POWER RATING @70°C DIMENSIONS(mm) Maximum Working Voltage Maximum Overload Voltage Resistance Range
L D H d
MO-100S 1W 9.0 ± 0.5 3.2 ± 0.5 28 ± 2 0.60 ± 0.05 350V 700V

* STANDARD
0.5 Ohm-100K Ohm

 
MO-200S   2W 11 ± 1.0 4.5 ± 0.5 35 ± 2 0.80 ± 0.05 350V 700V
MO-300S 3W 15 ± 1.0 5.0 ± 0.5 35 ± 2 0.80 ± 0.05 500V 800V
MO-500S 5W 17 ± 1.0 6.0 ± 0.5 35 ± 3 0.80 ± 0.05 750V 1000V