RES-SUPERMOX Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – High-voltage Super Mox resistors have been developed

Super Mox Series
High Voltage
High-voltage Super Mox resistors have been devel-
oped to meet the precision temperature stability
requirements of high-accuracy and high-voltage
systems. Super Mox combines proprietary non-
inductive resistance system and design to achieve
low temperature coefficient, low voltage coefficients,
high stability and increased high operating voltages.
These resistors are designed to meet the demanding
Uncoated resistor element pictured for
demonstration purposes only. Finished
product is coated with silicone.
requirements of high voltage power supplies, elec-
tron microscopes, X-ray systems, high resolution
CRT displays and geophysical instruments.
SERIES S P ECI F ICATI O N S

Power Max. Oper.
Series
Rating (W) Voltage
MOX910
3.80
15,000

MOX920
5.00
21,000

MOX930
7.50
30,000

MOX940
10.00
45,000

MOX950
13.50
60,000

MOX960
16.00
72,000

MOX970
20.00
90,000

* typical values, contact factory for details
Res. Range (Ω)
1K-500M
500M-5G
1K-1G
1G-10G
1K-1G5
1G5-15G
1K-2G5
2G5-25G
1K-3G
3G-30G
1K-4G
4G-40G
1K-5G
5G-50G
VCR*
0.40
0.75
0.20
0.40
0.15
0.30
0.10
0.15
0.08
0.12
0.06
0.10
0.04
0.08
characteristics
Resistance from 1KΩ to 50GΩ on all models (contact Ohmite for
Range 51G to 1TΩ)
Tolerances 0.05%, 0.1%, 0.25%, 0.5%, 1%, 2%, 5%, 10%
(0.05% avail. to 10G, 0.25% to 100G, other on
request)
Temperature 5, 10, 15, 25, 50 and 100ppm/°C (10ppm/°C avail-
Coefficients able to 10G, 25ppm/°C to 100G, other on request.
Temperature coefficient referenced to 25°C, ΔR
taken at +125°C.
Encapsulation Silicone Conformal Coating
Terminal Gold Plated
Material
Core Material Al2O3 (96%)
Resistor Ruthenium Oxide
Material
Operating -55°C to 225°C (extended temperature range to
Temperature 350°C available)
Insulation >10,000 MΩ
Resistance
Dielectric >1,000 Volt
Strength
Thermal ∆ R/R < 0.1% typ.,
Shock 0.20% max.
Overload ∆ R/R < 0.1% typ.,
0.25% max.
Moisture ∆ R/R < 0.1% typ.,
Resistance 0.25% max.
Load Life ∆ R/R < 0.1% typ.,
0.25% max.
500 Volt 25 °C 75% relative
humidity
25 °C 75% relative humidity
MIL Std. 202, method 107
Cond. C (IEC 68 -2 -14)
1,5 x Pnom, 5 sec (do not
exceed max. voltage)
MIL Std. 202, method 106
(IEC 68 -2 -3)
1000 hours at rated power
(IEC 115 -1)
Derating
100
80
25°
60
40
20
0-50
225°
0 50 100 150 200 250
Ambient Temperature, °C
(continued)
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