MG780 Datasheet, PDF (1/2 Pages) Caddock Electronics, Inc. – Type MG Precision High Voltage Resistors

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
the Type MG Precision High Voltage Resistors' outstanding
combination of performance features:
• Single-resistor values as high as 10,000 Megohms.
• Maximum continuous operating voltages as high as
48,000 volts ("-15" ratings).
• Overvoltage capabilities of 150% of standard working
voltages for all models and values, (except "-15" ratings).
• Resistance Tolerances from ±1.0% to ±0.1%.
• Temperature Coefficient, for standard resistance range, of
80 ppm/°C in combination 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.
This exceptional performance has been proven through
many years of use in equipment that demands the highest
reliability and stability, including TWT amplifiers, X-ray
systems, geophysical instruments, and medical electronics.
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.
Maximum operating voltages 60% higher than the values
listed in the table may be specified by adding "-15" to the
model number (Example: MG750-15). Note that overload
and overvoltage ratings do not apply to the "-15" resistors.
Resistance ranges for "-15" resistors shown in the table are
from "-15 Min." to "Standard Max."
Non-Inductive Performance
Most models are manufactured with Caddock's
Non-Inductive Design which uses a 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.
Model
No.
MG 650
MG 655
MG 660
MG 680
MG 710
MG 712
MG 714
MG 715
MG 716
MG 717
MG 720
MG 721
MG 725
MG 730
MG 731
MG 735
MG 740
MG 745
MG 750
MG 780
MG 785
MG 810
MG 815
Watt-
age
Max.
Continuous
Oper. Volt.
Overload
Rating
Dielect.
Strength
0.5
600 Type 1
750
0.5
600 Type 1
750
0.6
1,000 Type 1
750
0.8
2,000 Type 1
750
1.0
4,000 Type 1
750
0.6
1,000 Type 2
750
1.0
1,000 Type 2
750
1.0
2,000 Type 2
750
1.5
4,000 Type 2
750
1.5
2,000 Type 2
750
2.0
6,000 Type 2
750
2.0
4,000 Type 2
750
2.5 10,000 Type 2
750
3.0
6,000
Type 2 1,000
2.6
4,000 Type 2 1,000
3.6 10,000 Type 2 1,000
3.6
6,000 Type 2 1,000
5.0 15,000
Type 2 1,000
5.0 10,000 Type 2 1,000
7.5 15,000
Type 2 1,000
8.0 20,000
Type 2 1,000
10.0 25,000
Type 2 1,000
15.0 30,000 Type 2 1,000
Min.
200 Ω
Resistance
-15 Standard Extended
Min.
Max.
Max.
N/A
5 Meg N/A
200 Ω N/A
8 Meg N/A
400 Ω N/A
10 Meg N/A
600 Ω N/A
20 Meg N/A
800 Ω N/A
50 Meg N/A
800 Ω N/A
20 Meg N/A
200 Ω 6.5 Meg 20 Meg N/A
400 Ω 26 Meg 50 Meg N/A
600 Ω 70 Meg 75 Meg N/A
600 Ω 17 Meg 75 Meg 225 M
1K
N/A
150 Meg N/A
200 Ω 51 Meg 100 Meg 300 M
1.5 K N/A
200 Meg N/A
500 Ω 77 Meg 250 Meg 750 M
200 Ω 40 Meg 150 Meg 750 M
750 Ω 178 Meg 300 Meg 1,000 M
300 Ω 64 Meg 300 Meg 1,500 M
1 K 288 Meg 500 Meg 1,500 M
400 Ω 128 Meg 500 Meg 2,500 M
600 Ω 192 Meg 750 Meg 3,750 M
800 Ω 320 Meg 1,000 Meg 5,000 M
1 K 400 Meg 1,250 Meg 6,250 M
1 K 384 Meg 2,000 Meg 10,000 M
Dimensions in inches and (millimeters)
A
B
C
.313 ±.020
(7.95 ±.51)
.094 ±.015
(2.39 ±.38)
.025 ±.002
(.64 ±.05)
.313 ±.030
(7.95 ±.76)
.109 ±.025
(2.77 ±.64)
.025 ±.002
(.64 ±.05)
.500 ±.030 .094 ±.015 .025 ±.002
(12.70 ±.76) (2.39 ±.38) (.64 ±.05)
.750 ±.030 .094 ±.015 .025 ±.002
(19.05 ±.76) (2.39 ±.38) (.64 ±.05)
1.000 ±.040 .094 ±.015 .025 ±.002
(25.40 ±1.02) (2.39 ±.38) (.64 ±.05)
.400 ±.060 .140 ±.030 .025 ±.002
(10.16 ±.152) (3.56 ±.76) (.64 ±.05)
.562 ±.060 .150 ±.030 .032 ±.002
(14.27 ±1.52) (3.81 ±.76) (.81 ±.05)
.750 ±.060 .140 ±.030 .025 ±.002
(19.05 ±1.52) (3.56 ±.76) (.64 ±.05)
1.000 ±.060 .140 ±.030 .025 ±.002
(25.40 ±1.52) (3.56 ±.76) (.64 ±.05)
.710 ±.050 .240 ±.030 .040 ±.002
(18.03 ±1.27) (6.10 ±.76) (1.02 ±.05)
1.500 ±.080 .140 ±.030 .025 ±.002
(38.10 ±2.03) (3.56 ±.76) (.64 ±.05)
1.000 ±.050 .240 ±.030 .040 ±.002
(25.40 ±1.27) (6.10 ±.76) (1.02 ±.05)
2.000 ±.080
(50.80 ±2.03)
.140 ±.030
(3.56 ±.76)
.025 ±.002
(.64 ±.05)
1.500 ±.080
(38.10 ±2.03)
.240 ±.030
(6.10 ±.76)
.040 ±.002
(1.02 ±.05)
1.000 ±.060
(25.40 ±1.52)
.315 ±.030
(8.00 ±.76)
.040 ±.002
(1.02 ±.05)
2.000 ±.080
(50.80 ±2.03)
.240 ±.030
(6.10 ±.76)
.040 ±.002
(1.02 ±.05)
1.500 ±.060
(38.10 ±1.52)
.315 ±.030
(8.00 ±.76)
.040 ±.002
(1.02 ±.05)
3.000 ±.100
(76.20 ±2.54)
.240 ±.030
(6.10 ±.76)
.040 ±.002
(1.02 ±.05)
2.125 ±.060
(53.98 ±1.52)
.315 ±.030
(8.00 ±.76)
.040 ±.002
(1.02 ±.05)
3.125 ±.060 .315 ±.030 .040 ±.002
(79.38 ±1.52) (8.00 ±.76) (1.02 ±.05)
4.000 ±.120 .315 ±.030 .040 ±.002
(101.60 ±3.05) (8.00 ±.76) (1.02 ±.05)
5.000 ±.120 .315 ±.030 .040 ±.002
(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)
Models with low inductance construction are in shaded areas.
Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas.
Specifications:
Resistance Tolerance:
Resistance Range
Tolerance
Standard
±1%, ±0.5%, ±0.25%, ±0.1%
St'd with "-15" rating
±1%
Extended Range
±1%
Temperature Coefficient:
Resistance
Range
Standard and
St'd with "-15"
rating
Extended
Range
TC Specifications
±80 ppm/°C from -15°C to +105°C,
referenced to +25°C.
±80 ppm/°C from +25°C to +105°C,
-200 ppm/°C to +50 ppm/°C from
-15°C to +25°C.
Insulation Resistance: 10,000 Megohms, min.
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 V_rmsAC
Resistance Range
Overload/Overvoltage, ∆R
Standard
0.5% max.
St'd with "-15" rating
N/A
Extended Range
0.8% max.
Thermal Shock: Mil-Std-202, Method 107,
Cond. C, ΔR 0.25% max.
Moisture Resistance: Mil-Std-202, Method 106,
ΔR 0.4% max.
Load Life: 1,000 hours at +125°C at rated
voltage, not to exceed rated power.
Resistance Range
Load Life, ∆R
Standard
0.5% max.
St'd with "-15" rating
0.8% max.
Extended Range
0.8% max.
Solderable Leads
Encapsulation: High Temperature Silicone Conformal.
Applications Engineering
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Roseburg, Oregon 97470-9422
Phone: [phone]
Fax: [phone]
CADDOCK
e-mail: [e-mail] • web: www.caddock.com
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Sales and Corporate Office
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© 2004 Caddock Electronics, Inc.
28_IL110.1004