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Type USG Ultra-Stable Precision High Voltage Resistors
Lowest TC High Voltage Resistor, 10 ppm/°C from -40°C to +85°C reference to +25°C 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 -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.
The performance features of the Type USG Ultra-Stable Precision High Voltage Resistors are:
• Temperature Coefficient: 10 ppm/°C from -40°C to +85°C.
• Tolerance: 0.10%
• 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.
• 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.
Part Number (Model-Value-Tol.-TC)
Max. Continuous Operating Voltage
Resistance (Q)
Tolerance
©
TC ppm/°C
©
Ambient Max.
Operating Temperature
Dielectric Strength
Dimensions in inches and (millimeters)
A
B
C
USG1105 - 50M - 0.10%-10ppm
5 KV
50 Meg
0.10%
10 ppm/°C
85°C
1,000
1.250 ±.070 (31.75 ±1.78)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
USG1105 - 75M - 0.10%-10ppm
5 KV
75 Meg
0.10%
10 ppm/°C
85°C
1,000
1.250 ±.070 (31.75 ±1.78)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
USG1110 - 100M - 0.10%-10ppm
10 KV
100 Meg
0.10%
10 ppm/°C
85°C
1,000
2.000 ±.080 (50.80 ±2.03)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
USG1110 - 150M - 0.10%-10ppm
10 KV
150 Meg
0.10%
10 ppm/°C
85°C
1,000
2.000 ±.080 (50.80 ±2.03)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
USG1115 - 150M - 0.10%-10ppm
15 KV
150 Meg
0.10%
10 ppm/°C
85°C
1,000
3.000 ±.090 (76.20 ±2.29)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
USG1115 - 200M - 0.10%-10ppm
15 KV
200 Meg
0.10%
10 ppm/°C
85°C
1,000
3.000 ±.090 (76.20 ±2.29)
.350 ±.040 (8.89 ±1.02)
.040 ±.002 (1.02 ±.05)
Specifications:
(Numbers inside circles reference columns in part number table above)
© Tolerance: ±0.1% measured at room temperature (23°C ±2°C) at 100 Vdc.
© Temperature Coefficient: 10 ppm/°C, refer­enced to +25°C. AR 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, AR 0.05% max.
Thermal Shock: Mil-Std-202, Method 107, condition A, AR 0.05% max.
Moisture Resistance: Mil-Std-202, Method 106, AR 0.05% max.
Load Life: 1000 hours at +85°C at rated voltage, AR 0.025% typical, AR 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.
Low Absolute TC, '%l Ultra-Precision Tolerance, with Type USF Resistors
Special Matched Resistors for Lowest Ratio TC with Type TK Low TC Radial Lead Resistors
Applications Engineering Ü j^^^^^^^^l^ Sales and Corporate Office
17271 North Umpqua Hwy. Ihlf* 1717 Chicago Avenue
Roseburg, Oregon 97470-9422 ffWW- Riverside, California 92507-2364
Phone: (541) 496-0700 e-mail: caddock@caddock.com • web: www.caddock.com Phone: (951) 788-1700
Fax: (541) 496-0408 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (951) 369-1151
© 2004 Caddock Electronics, Inc.
28_IL135.1004

pageCatalog pdf di En 2012-02-07-16