Part Performance and Size Options provide the Designer with High Voltage Module Optimization
Caddock's Micronox® complex metal oxide resistance
films are the source of the Type MG Precision High Voltage
Resistors' outstanding combination of performance features:
•
Resistance Tolerances from ±1% to ±0.1%.
•
Temperature Coefficient, for standard resistance range, of
80 ppm/°C, with resistance tolerances as tight as ±0.1%.
•
Type MG resistors have demonstrated stability of 0.01%
per 1,000 hours in extended load life testing of standard
resistance range values.
•
Overvoltage capabilities of 150% of standard working
voltages for all models and values (except "-15" ratings).
•
Extended higher maximum operating voltage, "-15 ratings"
•
Outstanding short term high voltage transient stability.
•
Single resistor values as high as 10,000 Megohms.
This exceptional performance has been proven through
many years of use in equipment that demands the highest
reliability and stability, including TWT HV power supplies,
electron microscopes, e-beam equipment, electrical
distribution HV monitor dividers, X-ray systems, geophysical
instruments, medical electronics, as well as HV probes and
compact instrument probes.
Model
No.
Std. Max.
Coating
Resistance
Watt- Continuous Overload
Dielectric
age Oper. Volt. Rating
Strength Std Min
-15 Min
Std Max
(DC or ACrms)
(ACrms)
Type MG Precision High Voltage Resistors
Page 1 of 2
Tolerance of ±1% to ±0.1%, Temperature Coefficient as tight as 80 ppm/°C, combined with Excellent Long-Term Stability.
Preconditioning for Power and Voltage Ratings
All power ratings and maximum operating voltage ratings
are for continuous duty. These ratings are based on pre-
stress voltage levels applied during the manufacturing
process to provide for stable resistor performance even under
momentary overload conditions.
For certain models, the maximum operating
voltage may be extended 60% higher than the
operating voltage listed in the table by adding "-15"
to the model number (Example: MG750-15-200M-1%;
16,000 Volts). Note: The resistance range is from "-15
Min." to "Std Max". The overload and overvoltage
ratings do not apply to resistors with the "-15 rating".
Non-Inductive Performance
All models are manufactured with Caddock's
Non-Inductive Designs, which includes the serpentine
resistive pattern that provides for neighboring lines to carry
current in opposite directions, thereby achieving maximum
cancellation of flux fields over the entire length of the resistor.
This efficient non-inductive construction is accomplished
without derating of any performance advantages.
Dimensions in inches and (millimeters)
Extended
Max
A
B
C
Specifications:
Resistance Range
Standard
St'd with "-15" rating
Extended Range
Resistance
Range
Resistance Tolerance:
Tolerance
±1%;
also
±0.1%, ±0.25%, ±0.5%
±1%;
also
±5%
±1%;
also
±5%
MG650
MG655
0.5
0.5
600
600
Type 1
Type 1
Type 1
Type 1
Type 1
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
Type 2
750
750
200
Ω
200
Ω
N/A
N/A
5 Meg
8 Meg
N/A
N/A
MG660
MG680
MG710
0.6
0.8
1.0
1,000
2,000
4,000
750
750
750
400
Ω
600
Ω
800
Ω
N/A
N/A
N/A
10 Meg
20 Meg
50 Meg
N/A
N/A
N/A
MG712
MG714
0.6
1.0
1,000
1,000
750
750
800
Ω
200
Ω
N/A
6.5 Meg
26 Meg
70 Meg
17 Meg
20 Meg
20 Meg
N/A
N/A
MG715
MG716
MG717
1.0
1.5
1.5
2,000
4,000
2,000
750
750
750
400
Ω
600
Ω
600
Ω
50 Meg
75 Meg
75 Meg
N/A
N/A
225 M
MG720
MG721
2.0
2.0
6,000
4,000
750
750
1K
200
Ω
N/A
51 Meg
150 Meg
100 Meg
N/A
300 M
MG725
MG730
MG731
2.5
3.0
2.6
10,000
6,000
4,000
750
1,000
1,000
1.5 K
500
Ω
200
Ω
N/A
77 Meg
200 Meg
250 Meg
150 Meg
N/A
750 M
750 M
40 Meg
MG735
MG740
3.6
3.6
10,000
6,000
1,000
1,000
750
Ω
178 Meg
300
Ω
300 Meg 1,000 M
300 Meg
1,500 M
64 Meg
288 Meg
MG745
MG750
MG780
5.0
5.0
7.5
15,000
10,000
15,000
1,000
1,000
1,000
1K
500 Meg 1,500 M
500 Meg 2,500 M
750 Meg
3,750 M
400
Ω
128 Meg
600
Ω
192 Meg
MG785
MG810
8.0
10.0
20,000
25,000
1,000
1,000
800
Ω
320 Meg 1,000 Meg
1K
5,000 M
6,250 M
400 Meg
1,250 Meg
1.000
±.040
.094
±.015
.025
±.002
(25.40
±1.02)
(2.39
±.38)
(.64
±.05)
.140
±.030
.025
±.002
.400
±.060
(10.16
±1.52)
(3.56
±.76)
(.64
±.05)
.150
±.030
.032
±.002
.562
±.060
(14.27
±1.52)
(3.81
±.76)
(.81
±.05)
.140
±.030
.025
±.002
.750
±.060
(19.05
±1.52)
(3.56
±.76)
(.64
±.05)
.140
±.030
.025
±.002
1.000
±.060
(25.40
±1.52)
(3.56
±.76)
(.64
±.05)
.240
±.030
.040
±.002
.710
±.050
(18.03
±1.27)
(6.10
±.76)
(1.02
±.05)
.140
±.030
.025
±.002
1.500
±.080
(38.10
±2.03)
(3.56
±.76)
(.64
±.05)
.240
±.030
.040
±.002
1.000
±.050
(25.40
±1.27)
(6.10
±.76)
(1.02
±.05)
.140
±.030
.025
±.002
2.000
±.080
(50.80
±2.03)
(3.56
±.76)
(.64
±.05)
.240
±.030
.040
±.002
1.500
±.080
(38.10
±2.03)
(6.10
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
1.000
±.060
(25.40
±1.52)
(8.00
±.76)
(1.02
±.05)
.240
±.030
.040
±.002
2.000
±.080
(50.80
±2.03)
(6.10
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
1.500
±.060
(38.10
±1.52)
(8.00
±.76)
(1.02
±.05)
.240
±.030
.040
±.002
3.000
±.100
(76.20
±2.54)
(6.10
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
2.125
±.060
(53.98
±1.52)
(8.00
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
3.125
±.060
(79.38
±1.52)
(8.00
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
4.000
±.120
(101.60
±3.05)
(8.00
±.76)
(1.02
±.05)
.315
±.030
.040
±.002
5.000
±.120
(127.00
±3.05)
(8.00
±.76)
(1.02
±.05)
6.000
±.120
.350
±.040
.040
±.002
(152.40
±3.05)
(8.89
±1.02)
(1.02
±.05)
.500
±.030
.094
±.015
(12.70
±.76)
(2.39
±.38)
.750
±.030
.094
±.015
(19.05
±.76)
(2.39
±.38)
.313
±.020
(7.95
±.51)
.313
±.030
(7.95
±.76)
.094
±.015
(2.39
±.38)
.109
±.025
(2.77
±.64)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
.025
±.002
(.64
±.05)
Temperature Coefficient:
TC Specifications
±80
ppm/°C from -15°C to +105°C,
referenced to +25°C.
Standard and
St'd with "-15"
rating
Extended
Range
±80
ppm/°C from +25°C to +105°C,
-200 ppm/°C to +50 ppm/°C from
-15°C to +25°C.
Voltage Coefficient:
Contact Caddock
Applications Engineering
Overload/Overvoltage:
5 times rated power
with applied voltage not to exceed 1.5 times max-
imum continuous operating voltage for 5 seconds.
Type 1: DC Voltage
Type 2: DC Voltage or VAC
rms
Resistance Range
Standard
St'd with "-15" rating
Extended Range
Overload/Overvoltage,
ΔR
0.5% max.
N/A
0.8% max.
Load Life:
1,000 hours at +125°C at rated
voltage, not to exceed rated power.
Resistance Range
Standard
St'd with "-15" rating
Extended Range
Load Life,
ΔR
0.5% max. at +125°C
0.8%
max. at +85°C
0.8% max. at +125°C
MG815
15.0
30,000
1,000
1K
384 Meg 2,000 Meg 10,000 M
Lead Finish:
Solderable. Thin gold plate over thick nickel layer on copper core.
Encapsulation:
High Temperature Silicone Conformal.
Operating Temperature Range:
-55°C to +225°C, see Derating Curve.
Thermal Shock:
Mil-Std-202, Method 107,
Cond. C,
∆R
0.25% max.
Moisture Resistance:
Mil-Std-202, Method 106,
∆R
0.4% max.
Insulation Resistance:
10,000 Megohms, min.
Sales and Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
email: caddock@caddock.com
28_IL110.0721
website: caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2003-2021 Caddock Electronics, Inc.
ELECTRONICS, INC.
Type MG Precision High Voltage Resistors
MG650
MG655
MG660
MG680
MG710
MG712
MG714
MG715
MG716
MG720
MG725
MG717
MG721
MG730
MG735
MG745
MG731
Page 2 of 2
N
Non-inductive
performance with
Caddock's exclusive design
All Type MG Models are available with
Caddock's Non-inductive Serpentine Pattern
MG740
MG750
MG780
MG785
MG810
MG815
Certain products shown in this catalog are covered by one or more patents, there are also patents pending.
1.500
±
.125
(38.10
±
3.18)
A
B
C
Design Assistance in Developing High Voltage Resistor Sets with
Low TC Tracking.
For immediate engineering assistance in developing Low Ratio TC matched
high voltage resistor sets, contact our Applications Engineering and we will
be pleased to offer the best solution from our high voltage resistor product
capabilities.
DIMENSIONS IN INCHES AND (MILLIMETERS)
Derating Curve:
STANDARD RATED POWER OR
60
STANDARD RATED VOLTAGE, %
100
80
40
20
Ordering Information
:
25
75
125 175
225
AMBIENT TEMPERATURE,
°C
0
-55
Model Number:
MG750 -100M - 1%
Resistor Value:
Tolerance
website: caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2003-2021 Caddock Electronics, Inc.
ELECTRONICS, INC.
Sales and Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
email: caddock@caddock.com
28_IL110.0721
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