CADKDOC
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 Numbe
r(Model-Value-Tol.-TC)USG1105 - 50M - 0.10%-10ppm0.10%5 KVToleranceMax. ContinuousOperating Voltage50 MegDimensions in inches and (millimeters)ABCResistance (Ω)TC ppm/°CAmbient Max.OperatingTemperature10 ppm/°C85°CDielectricStrength1,000USG1105 - 75M - 0.10%-10ppmUSG1110 - 100M - 0.10%-10ppmUSG1110 - 150M - 0.10%-10ppmUSG1115 - 150M - 0.10%-10ppmUSG1115 - 200M - 0.10%-10ppm5 KV10 KV10 KV15 KV15 KV75 Meg100 Meg150 Meg150 Meg200 Meg0.10%0.10%0.10%0.10%0.10%10 ppm/°C10 ppm/°C10 ppm/°C10 ppm/°C10 ppm/°C85°C85°C85°C85°C85°C1,0001,0001,0001,0001,000.040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)2.000 ±.080(50.80 ±2.03).040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)3.000 ±.090(76.20 ±2.29).040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)2.000 ±.080(50.80 ±2.03).040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)3.000 ±.090(76.20 ±2.29).040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)1.250 ±.070(31.75 ±1.78).040 ±.002(1.02 ±.05).350 ±.040(8.89 ±1.02)1.250 ±.070(31.75 ±1.78)12
Specifications:
(Numbers inside circles reference columns in part number table above)
1
2
Tolerance: ±0.1% measured at room temperature (23°C ±2°C) at 100 Vdc.
Temperature Coefficient: 10 ppm/°C, refer-
enced to +25°C. ΔR 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, ΔR 0.05% max.
Thermal Shock: Mil-Std-202, Method 107,
condition A, ΔR 0.05% max.
Moisture Resistance: Mil-Std-202, Method 106, ΔR 0.05% max.
Load Life: 1000 hours at +85°C at rated voltage,
ΔR 0.025% typical, ΔR 0.05% max.
Solderable Leads
Encapsulation: High temperature silicone conformal.
Storage Temperature: -40°C to +105°C.
DIMENSIONS IN INCHES AND (MILLIMETERS)
1.500
± .125(38.10 ± 3.18)ABC
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,
Ultra-Precision Tolerance, with Type USF Resistors
Special Matched Resistors for
Lowest Ratio TC with Type TK Low
TC Radial Lead Resistors
28_IL135.1004

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