Type USG Ultra-Stable Precision High Voltage Resistors
Absolute TC to 10 ppm/°C from -40°C to +85°C referenced to +25°C
Absolute Tol. to 0.1%, Three body sizes providing voltage ratings of 5KV, 10KV, and 15KV
The very highest performance high voltage applications require the best
possible temperature coefficient and long term stability from the high voltage
resistors that are used in these applications. To meet these demanding
requirements Caddock introduces the Type USG Ultra-Stable Precision High
The performance features of the Type USG Ultra-Stable
Precision High Voltage Resistors are:
• Temperature Coefficient and Tolerance:
10 ppm/°C with ±0.1% or 20 ppm/°C with ±0.2%
• Typical Load Life Stability of 0.025% per 1,000 hours
at +85°C, 0.05% per 1000 hrs. maximum.
• Three body sizes provide continuous voltage ratings of 5KV,
10KV, and 15KV.
®
Voltage Resistors. Utilizing our proven Tetrinox resistance film system,
these Type USG resistors were developed to optimize low temperature
coefficient performance and long term stability performance. By utilizing
®
specific ceramic core materials with optimum Tetrinox processing, we
• The specific resistances that are offered in each body size
have been selected for produceability of optimum performance.
• The Ultra Low Temperature Coefficient minimizes self-heating (warm-up)
drift following the application of high voltage or resulting from a change in
the applied high voltage.
are able to control, very tightly in manufacturing, the important ultra-stable
performance parameters in operating temperatures from -40°C to +85°C.
This unique process is offered in specific resistance values in three body
sizes. The extraordinary operating stability of the Type USG resistors will
improve the performance of your high voltage system.
• Custom Low TC HV Strings are available: 50KV, 100KV, etc.
Ambient Max.
Operating
Temperature
Dimensions in inches and (millimeters)
Part Number
(Model-Value-Tol.-TC)
Tolerance
1
TC ppm/°C
Dielectric
Strength
Max. Continuous
Operating Voltage
Resistance (Ω)
2
A
B
C
1.250 ±.070
(31.75 ±1.78)
1.250 ±.070
(31.75 ±1.78)
1.250 ±.070
(31.75 ±1.78)
1.250 ±.070
(31.75 ±1.78)
2.000 ±.080
(50.80 ±2.03)
2.000 ±.080
(50.80 ±2.03)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.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)
10 ppm/°C
20 ppm/°C
85°C
85°C
1,000
1,000
0.10%
0.20%
0.10%
USG1105 - 50.0M - 0.10%-10ppm
USG1105 - 50.0M - 0.20%-20ppm
USG1105 - 75.0M - 0.10%-10ppm
5 KV
5 KV
5 KV
50 Meg
50 Meg
75 Meg
10 ppm/°C
20 ppm/°C
10 ppm/°C
20 ppm/°C
10 ppm/°C
20 ppm/°C
85°C
85°C
85°C
85°C
85°C
85°C
1,000
1,000
1,000
1,000
1,000
1,000
USG1105 - 75.0M - 0.20%-20ppm
USG1110 - 100M - 0.10%-10ppm
USG1110 - 100M - 0.20%-20ppm
USG1110 - 150M - 0.10%-10ppm
USG1110 - 150M - 0.20%-20ppm
5 KV
10 KV
10 KV
10 KV
10 KV
75 Meg
100 Meg
100 Meg
150 Meg
150 Meg
0.20%
0.10%
0.20%
0.10%
0.20%
2.000 ±.080
(50.80 ±2.03)
2.000 ±.080
(50.80 ±2.03)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.040 ±.002
(1.02 ±.05)
.040 ±.002
(1.02 ±.05)
3.000 ±.090
.350 ±.040
.040 ±.002
USG1115 - 150M - 0.10%-10ppm
USG1115 - 150M - 0.20%-20ppm
USG1115 - 200M - 0.10%-10ppm
USG1115 - 200M - 0.20%-20ppm
15 KV
15 KV
15 KV
15 KV
150 Meg
150 Meg
200 Meg
200 Meg
0.10%
0.20%
0.10%
0.20%
10 ppm/°C
20 ppm/°C
10 ppm/°C
20 ppm/°C
85°C
85°C
85°C
85°C
1,000
1,000
1,000
1,000
(76.20 ±2.29)
(8.89 ±1.02)
(1.02 ±.05)
3.000 ±.090
(76.20 ±2.29)
3.000 ±.090
(76.20 ±2.29)
3.000 ±.090
(76.20 ±2.29)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.350 ±.040
(8.89 ±1.02)
.040 ±.002
(1.02 ±.05)
.040 ±.002
(1.02 ±.05)
.040 ±.002
(1.02 ±.05)
Specifications:
(Numbers inside circles reference columns in
part number table above)
1
Tolerance: ±0.10% or ±0.20% measured at
room temperature (23°C ±2°C) at 100 Vdc.
2
Temperature Coefficient: 10 ppm/°C or 20 ppm/°C,
referenced to 25°C. ∆R taken at -40°C and
+85°C, measured at 50% of rated voltage.
Insulation Resistance: 10,000 megohms, min.
Overvoltage: 1.5 times maximum continuous
operating voltage for 5 seconds, ∆R 0.05% max.
Thermal Shock: Mil-Std-202, Method 107,
condition A, ∆R 0.05% max.
Moisture Resistance: Mil-Std-202, Method 106,
∆R 0.05% max.
Load Life: 1000 hours at +85°C at rated voltage,
∆R 0.025% typical, ∆R 0.05% max.
Solderable Leads
Encapsulation: High temperature silicone
conformal.
Storage Temperature: -40°C to +105°C.
Precise Low TC Voltage Division
Precise Voltage Division Ratio performance can be formed using Type USG Ultra-
Stable High Voltage Resistors together with Caddock's Type USF
Ultra-Stable Precision Film Resistors, or "matched" with selected Type TK Low
TC Precision Radial-Lead Resistors. Consult Caddock Applications
Engineering to optimize voltage division ratio performance for your
application. The Low TC of the Type USG resistors minimizes temperature
related drift due to temperature gradients that may exist due to the
placement of the resistor components in the high voltage assembly.
B
1.500 ± .125
(38.10 ± 3.18)
A
C
Low Absolute TC,
Ultra-Precision Tolerance,
with Type USF Resistors
Special Matched Resistors for
Lowest Ratio TC with Type TK Low
TC Radial Lead Resistors
DIMENSIONS IN INCHES AND (MILLIMETERS)
Sales and Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
ELECTRONICS, INC.
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Fax: (541) 496-0408
© 2003-2017 Caddock Electronics, Inc.
28_IL135.0717
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