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77

characteristics

series s P eci F icati ON s

super Mox series

High Voltage

Insulation

Resistance

>10,000 MΩ

500 Volt 25 °C 75% relative

humidity

Dielectric

Strength

>1,000 Volt

25 °C 75% relative humidity

Thermal

Shock

∆ R/R < 0.1% typ.,

0.20% max.

MIL Std. 202, method 107

Cond. C (IEC 68 -2 -14)

Overload ∆ R/R < 0.1% typ.,

0.25% max.

1,5 x Pnom, 5 sec (do not

exceed max. voltage)

Moisture

Resistance

∆ R/R < 0.1% typ.,

0.25% max.

MIL Std. 202, method 106

(IEC 68 -2 -3)

Load Life ∆ R/R < 0.1% typ.,

0.25% max.

1000 hours at rated power

(IEC 115 -1)

Resistance

Range

from 1KΩ to 50GΩ on all models (contact Ohmite for

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

Coefficients

5, 10, 15, 25, 50 and 100ppm/°C (10ppm/°C avail-

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

Material

Gold Plated

Resistor

Material

Ruthenium Oxide

Operating

Temperature

-55°C to 225°C (extended temperature range to

350°C available)

Power

Max. Oper.

Series

Rating (W)

Voltage

Res. Range (Ω)

VCR*

MOX910

3.80

15,000

1K-500M

0.40

500M-5G

0.75

MOX920

5.00

21,000

1K-1G

0.20

1G-10G

0.40

MOX930

7.50

30,000

1K-1G5

0.15

1G5-15G

0.30

MOX940

10.00

45,000

1K-2G5

0.10

2G5-25G

0.15

MOX950

13.50

60,000

1K-3G

0.08

3G-30G

0.12

MOX960

16.00

72,000

1K-4G

0.06

4G-40G

0.10

MOX970

20.00

90,000

1K-5G

0.04

5G-50G

0.08

* typical values, contact factory for details

Derating

100

Ambient Temperature, °C

60

20

0

150

80

40

100

0

50

-50

250

200

25°

225°

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.

(continued)