Type MX Precision High Voltage Resistors
Cost Effective High Voltage Resistors for Industrial and General Purpose Applications
The Type MX Precision High Voltage Resistors were
specifically developed for use in industrial and general purpose
high voltage systems. These resistors combine the proven
performance of Caddock's Micronox ® resistance system
with new cost efficient design elements. These resistors
are intended for the design of high voltage systems where
the system is not exposed to full military or space grade
operating conditions. For full military or space grade operating
conditions, we recommend Caddock's
Type TG Low TC
Precision High Voltage Resistors
or
Type MG Precision
High Voltage Resistors.
MX431
The performance features of the Type MX Precision High
Voltage Resistors are:
• Seven Models with Voltage Ratings from 7.5 KV to 48 KV.
• Temperature Coefficient: 80 ppm/°C from 0°C to +70°C.
• Load Life Stability of 0.50% per 1,000 hours.
• Resistance Tolerance from ±0.1% to ±10%.
• Non-Inductive Design.
• Resistance Range from 1 Megohm to 2,000 Megohms.
Ordering Information:
Model Number:
MX440
MX485 -100M - 1%
Tolerance
MX450
MX480
Resistor Value:
MX485
MX510
MX515
Model
No.
Watt-
age
Max.
Continuous
Oper. Volt.
TC
ppm/
°C
Resistance
Min.
Max.
Dimensions in inches and (millimeters)
A
B
C
Specifications:
MX 431
MX 440
2.0
3.5
7,500
11,000
80
80
1 Meg
1.5 Meg
150 Meg
300 Meg
MX 450
MX 480
MX 485
5.0
7.5
10.0
16,000
24,000
32,000
80
80
80
2 Meg
3 Meg
4 Meg
500 Meg
750 Meg
1,000 Meg
MX 510
MX 515
12.5
15.0
40,000
48,000
80
80
5 Meg
6 Meg
1,250 Meg
2,000 Meg
.940
±.040
(23.88
±1.02)
1.450
±.040
(36.83
±1.02)
2.080
±.040
(52.83
±1.02)
3.080
±.050
(78.23
±1.27)
3.940
±.050
(100.08
±1.27)
4.940
±.080
(125.48
±2.03)
5.940
±.080
(150.88
±2.03)
.270
±.020
(6.86
±.51)
.270
±.020
(6.86
±.51)
.270
±.020
(6.86
±.51)
.270
±.020
(6.86
±.51)
.270
±.020
(6.86
±.51)
.270
±.020
(6.86
±.51)
.330
±.020
(8.38
±.51)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
.040
±.002
(1.02
±.05)
Type MX Resistors Utilize Caddock's Patented Coating Design
Type MX Precision High Voltage Resistors combine Caddock's Non-
Inductive serpentine pattern with a
patented, high thru-put screen printed
silicone coating. The alignment of the
gap in the coating pattern with the gap
in the serpentine resistor pattern
provides a complete encapsulation of
the resistor element. The cap and
lead assemblies are pressed onto the
resistor core, finishing the resistor and
providing rugged terminal attachment.
Resistance Tolerance:
±1%, ±2%, ±5%, or ±10%
(tolerance to ±0.5%, ±0.25%, or ±0.1% on special
order).
Temperature Coefficient:
80 ppm/°C referenced
to +25°C,
ΔR
taken at 0°C and +70°C.
Thermal Shock:
Mil-Std-202, Method 107,
Cond. A,
ΔR,
0.20% max.
Moisture Resistance:
Mil-Std-202, Method 106,
ΔR,
1.0% max.
Load Life:
1,000 hours at rated voltage at +70°C,
not to exceed rated power,
ΔR,
0.50% max.
Lead Material:
Tinned copper clad steel,
solderable.
Encapsulation:
Screen printed high temperature
silicone coating over resistor element.
1.500
±
.125
(38.10
±
3.18)
A
B
C
DIMENSIONS IN INCHES AND (MILLIMETERS)
Derating Curve:
100
80
RATED POWER OR
60
RATED VOLTAGE, %
40
20
0
Certain products shown in this catalog are covered by one or more patents, there are also patents pending.
25
70
175
AMBIENT TEMPERATURE,
°C
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
© 2004 Caddock Electronics, Inc.
CADDOCK
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
28_IL113.1004
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