Type MG Precision High Voltage Resistors
Page 1 of 2
Now with Extended Resistance Range to 10,000 Megohms and Additional Models
Temperature Coefficient as tight as 80 ppm/C, Combined with Excellent Long-Term Stability and Precision Tolerances.
Caddock's Micronox resistance films are the source of Preconditioning for Power and Voltage Ratings
the Type MG Precision High Voltage Resistors' outstanding All power ratings and maximum operating voltage ratings
combination of performance features: are for continuous duty. These ratings are based on pre-
stress voltage levels applied during the manufacturing
Single-resistor values as high as 10,000 Megohms.
process to provide for stable resistor performance even under
Maximum continuous operating voltages as high as
momentary overload conditions.
48,000 volts -15" ratings).
Maximum operating voltages 60% higher than the values
Overvoltage capabilities of 150% of standard working
listed in the table may be specified by adding-15" to the
voltages for all models and values, (except-15" ratings).
model number (Example: MG750-15). Note that overload
Resistance Tolerances from 1.0% to 0.1%.
and overvoltage ratings do not apply to the-15" resistors.
Temperature Coefficient, for standard resistance range, of
Resistance ranges for-15" resistors shown in the table are
80 ppm/C in combination with resistance tolerances as
from-15 Min toStandard Max
tight as 0.1%.
Non-Inductive Performance
Type MG resistors have demonstrated stability of 0.01%
Most models are manufactured with Caddock's
per 1,000 hours in extended load life testing of standard
Non-Inductive Design which uses a serpentine resistive
resistance range values.
pattern that provides for neighboring lines to carry current in
This exceptional performance has been proven through
opposite directions, thereby achieving maximum cancellation
many years of use in equipment that demands the highest of flux fields over the entire length of the resistor. This
reliability and stability, including TWT amplifiers, X-ray
efficient non-inductive construction is accomplished without
systems, geophysical instruments, and medical electronics. derating of any performance advantages.
Resistance Dimensions in inches and (millimeters) Specifications:
Max.
Model Watt- Overload Dielect.
Continuous
-15 Standard Extended
No. age Rating Strength A B C
Min.
Resistance Tolerance:
Oper. Volt.
Min. Max. Max.
.094 .015
.313 .020 .025 .002 Resistance Range Tolerance
MG650 0.5 600 Type 1 750 N/A 5 Meg N/A
200
(2.39 .38)
(7.95 .51) (.64 .05)
Standard
1%, 0.5%, 0.25%, 0.1%
.109 .025
.313 .030 .025 .002
Type 1
MG655 0.5 600 750 200 N/A 8 Meg N/A
(2.77 .64)
(7.95 .76) (.64 .05)
St'd with-15" rating
1%
.094 .015
.500 .030 .025 .002
MG660 0.6 1,000 Type 1 750 N/A 10 Meg N/A Extended Range
400 1%
(2.39 .38)
(12.70 .76) (.64 .05)
.094 .015
.750 .030 .025 .002
MG680 0.8 2,000 750 N/A 20 Meg N/A
Type 1 600
(2.39 .38)
(19.05 .76) (.64 .05) Temperature Coefficient:
.094 .015
1.000 .040 .025 .002
MG710 1.0 4,000 Type 1 750 N/A 50 Meg N/A Resistance
800
(2.39 .38) TC Specifications
(25.40 1.02) (.64 .05)
Range
.140 .030
.400 .060 .025 .002
MG712 0.6 1,000 Type 2 750 N/A 20 Meg N/A
800
(3.56 .76) Standard and
(10.16 .152) (.64 .05)
80 ppm/C from -15C to +105C,
St'd with-15"
.150 .030
.562 .060 .032 .002 referenced to +25 C.
1.0 1,000 750 6.5 Meg 20 Meg N/A
MG714 Type 2 200
rating
(3.81 .76)
(14.27 1.52) (.81 .05)
.140 .030
.750 .060 .025 .002 80 ppm/C from +25C to +105C,
MG715 1.0 2,000 Type 2 750 26 Meg 50 Meg N/A Extended
400
(3.56 .76)
(19.05 1.52) (.64 .05) -200 ppm/C to +50 ppm/C from
Range
.140 .030 -15C to +25C.
1.000 .060 .025 .002
MG716 1.5 4,000 Type 2 750 70 Meg 75 Meg N/A
600
(3.56 .76)
(25.40 1.52) (.64 .05)
.240 .030 Insulation Resistance: 10,000 Megohms, min.
.710 .050 .040 .002
MG717 1.5 2,000 Type 2 750 17 Meg 75 Meg 225 M
600
(18.03 1.27) (6.10 .76) (1.02 .05)
Overload/Overvoltage: 5 times rated power
.140 .030
1.500 .080 .025 .002
MG720 2.0 6,000 Type 2 750 1 K N/A 150 Meg N/A
(3.56 .76) with applied voltage not to exceed 1.5 times max-
(38.10 2.03) (.64 .05)
.240 .030
1.000 .050 .040 .002 imum continuous operating voltage for 5 seconds.
MG721 2.0 4,000 750 51 Meg 100 Meg 300 M
Type 2 200
(6.10 .76)
(25.40 1.27) (1.02 .05)
Type 1: DC Voltage
.140 .030
2.000 .080 .025 .002
MG725 2.5 10,000 Type 2 750 1.5 K N/A 200 Meg N/A
Type 2: DC Voltage or V AC
(3.56 .76) rms
(50.80 2.03) (.64 .05)
.240 .030
1.500 .080 .040 .002
Resistance Range
MG730 3.0 6,000 Type 2 1,000 77 Meg 250 Meg 750 M Overload/Overvoltage, R
500
(6.10 .76)
(38.10 2.03) (1.02 .05)
Standard 0.5% max.
.315 .030
1.000 .060 .040 .002
MG731 2.6 4,000 Type 2 1,000 200 40 Meg 150 Meg 750 M
(8.00 .76)
(25.40 1.52) (1.02 .05)
St'd with-15" rating N/A
.240 .030
2.000 .080 .040 .002
MG735 3.6 10,000 Type 2 1,000 178 Meg 300 Meg 1,000 M
750 Extended Range 0.8% max.
(6.10 .76)
(50.80 2.03) (1.02 .05)
.315 .030
1.500 .060 .040 .002
MG740 3.6 6,000 Type 2 1,000 64 Meg 300 Meg 1,500 M
300
(8.00 .76)
(38.10 1.52) (1.02 .05) Thermal Shock: Mil-Std-202, Method 107,
.240 .030
3.000 .100 .040 .002 Cond. C, R 0.25% max.
MG745 5.0 15,000 Type 2 1,000 1 K 288 Meg 500 Meg 1,500 M
(6.10 .76)
(76.20 2.54) (1.02 .05)
Moisture Resistance: Mil-Std-202, Method 106,
.315 .030
2.125 .060 .040 .002
MG750 5.0 10,000 Type 2 1,000 128 Meg 500 Meg 2,500 M
400
(8.00 .76)
(53.98 1.52) (1.02 .05) R 0.4% max.
.315 .030
3.125 .060 .040 .002
7.5 15,000 Type 2 1,000 192 Meg 750 Meg 3,750 M
MG780 600 Load Life: 1,000 hours at +125C at rated
(8.00 .76)
(79.38 1.52) (1.02 .05)
voltage, not to exceed rated power.
.315 .030
4.000 .120 .040 .002
MG785 8.0 20,000 Type 2 1,000 320 Meg 1,000 Meg 5,000 M
800
(8.00 .76)
(101.60 3.05) (1.02 .05)
Resistance Range
Load Life, R
.315 .030
5.000 .120 .040 .002
MG810 10.0 25,000 Type 2 1,000 1 K 400 Meg 1,250 Meg 6,250 M
Standard 0.5% max.
(8.00 .76)
(127.00 3.05) (1.02 .05)
6.000 .120 .350 .040 .040 .002 St'd with-15" rating 0.8% max.
MG815 15.0 30,000 Type 2 1,000 1 K 384 Meg 2,000 Meg 10,000 M
(152.40 3.05) (1.02 .05)
(8.89 1.02)
Extended Range 0.8% max.
Models with low inductance construction are in shaded areas.
Solderable Leads
Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.
Encapsulation: High Temperature Silicone Conformal.
Sales and Applications Engineering
17271 North Umpqua Hwy.
ELECTRONICS, INC.
Roseburg, Oregon 97470-9422
e-mail: caddock@caddock.com web: www.caddock.com
Phone: (541) 496-0700
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Fax: (541) 496-0408
2003-2017 Caddock Electronics, Inc. 28_IL110.0717 Type MG Precision High Voltage Resistors
Page 2 of 2
MG650
MG655
MG660
MG680
MG710
MG712
MG714
MG715
MG716
MG720
Non-inductive
MG725
performance with
N
Caddock's exclusive design
MG717
Most models are available with
MG721
Caddock's Non-inductive Serpentine Pattern
MG730
MG735
MG745
MG731
MG740
MG750
MG780
MG785
MG810
MG815
Certain products shown in this catalog are covered by one or more patents, there are also patents pending.
Design Assistance in Developing High Voltage Resistor Sets with
B
A
1.500 .125
C
Low TC Tracking.
(38.10 3.18)
For immediate engineering assistance in developing Low Ratio TC matched
high voltage resistor sets, contact our Applications Engineering and we will
DIMENSIONS IN INCHES AND (MILLIMETERS)
be pleased to offer the best solution from our high voltage resistor product
Derating Curve: 100 capabilities.
80
60
RATED POWER OR
RATED VOLTAGE, % 40
Ordering Information:
MG750 -100M - 1%
20
Model Number: Tolerance
0
25 75 125 175 225 275
Resistor Value:
AMBIENT TEMPERATURE, C
Sales and Applications Engineering
17271 North Umpqua Hwy.
ELECTRONICS, INC.
Roseburg, Oregon 97470-9422
e-mail: caddock@caddock.com web: www.caddock.com Phone: (541) 496-0700
For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (541) 496-0408
2003-2017 Caddock Electronics, Inc. 28_IL110.0717