Type USG Ultra-Stable Precision High Voltage Resistors
Lowest TC High Voltage Resistor, 10 ppm/C from -40C to +85C reference to +25C
0.10% Tolerance, 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 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 are able to control, very tightly in manufacturing, the important
ultra-stable performance parameters in operating temperatures
from -40C to +85C. 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.
The performance features of the Type USG Ultra Stable
Precision High Voltage Resistors are:
• Temperature Coefficient: 10 ppm/C from -40C to +85C.
• Tolerance: 0.10%
• Typical Load Life Stability of 0.025% per 1,000 hours
at +85C, 0.05% per 1000 hrs. maximum.
• Three body sizes provide continuous voltage ratings of 5KV,
10KV, and 15KV.
• 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.
• Custom Low TC HV Strings are available: 50KV, 100KV, etc.
Ambient Max.
Operating
Temperature
Dimensions in inches and (millimeters)
Max. Continuous
Operating Voltage
Part Number
Dielectric
Strength
Resistance ()
Tolerance
TC ppm/C
(Model-Value-Tol.-TC)
1
2
A
B
C
1.250 .070
.350 .040
.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)
USG1105 - 50M - 0.10%-10ppm
USG1105 - 75M - 0.10%-10ppm
USG1110 - 100M - 0.10%-10ppm
USG1110 - 150M - 0.10%-10ppm
USG1115 - 150M - 0.10%-10ppm
USG1115 - 200M - 0.10%-10ppm
5 KV
5 KV
50 Meg
75 Meg
10 ppm/C
10 ppm/C
10 ppm/C
10 ppm/C
10 ppm/C
10 ppm/C
85C
85C
85C
85C
85C
85C
1,000
1,000
1,000
1,000
1,000
1,000
0.10%
0.10%
0.10%
0.10%
0.10%
0.10%
(31.75 1.78) (8.89 1.02)
1.250 .070
(31.75 1.78) (8.89 1.02)
2.000 .080 .350 .040
(50.80 2.03) (8.89 1.02)
2.000 .080 .350 .040
(50.80 2.03) (8.89 1.02)
3.000 .090 .350 .040
(76.20 2.29) (8.89 1.02)
3.000 .090 .350 .040
(76.20 2.29) (8.89 1.02)
.350 .040
10 KV
10 KV
15 KV
15 KV
100 Meg
150 Meg
150 Meg
200 Meg
Specifications:
(Numbers inside circles reference columns in
part number table above)
1
Tolerance:
0.1% measured at room
temperature (23C 2C) at 100 Vdc
2
Temperature Coefficient: 10ppm/C, refer-
enced to 25C. R taken at -40C and +85C,
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.
Precise Low TC Voltage Division
Load Life: 1000 hrs at +85C at rated voltage,
R 0.025% typical, R 0.05% max.
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.TheLowTCoftheTypeUSGresistorsminimizestemperature
related drift due to temperature gradients that may exist due to the
placement of the resistor components in the high voltage assembly.
Solderable Leads
Encapsulation: High temperature silicone
conformal
Storage Temperature: -40C to +105C
B
1.500 .125
(38.10 3.18)
A
C
Low Absolute TC,
Ultra-Precision Tolerance,
with Type USF Resistors
DIMENSIONS IN INCHES AND (MILLIMETERS)
Special Matched Resistors for
Lowest Ratio TC with Type TK Low
TC Radial Lead Resistors
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
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
Fax: (951) 369-1151
Hurst Green • Surrey • RH8 9AX • UK
Email • sales@rhopointcomponents.com
Web • www.rhopointcomponents.com
UK & Ireland
Distributors
Tel: +44 (0) 870 608 1188
© 2004 Caddock Electronics, Inc.