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 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. Part Number (Model-Value-Tol.-TC) Max. Continuous Operating Voltage Resistance (Ω) Tolerance 1 0.10% T h e p e r f o r m a n c e f e a t u r e s o f t h e Ty p e U S G U l t r a - S t a b l e 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. • 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 Dielectric Strength 10 ppm/°C 85°C 1,000 TC ppm/°C 2 USG1105 - 50.0M - 0.10%-10ppm 5 KV USG1105 - 50.0M - 0.20%-20ppm 5 KV 50 Meg 0.20% 20 ppm/°C 85°C 1,000 USG1105 - 75.0M - 0.10%-10ppm 5 KV 75 Meg 0.10% 10 ppm/°C 85°C 1,000 USG1105 - 75.0M - 0.20%-20ppm 5 KV 75 Meg 0.20% 20 ppm/°C 85°C 1,000 USG1110 - 100M - 0.10%-10ppm 10 KV 100 Meg 0.10% 10 ppm/°C 85°C 1,000 USG1110 - 100M - 0.20%-20ppm 10 KV 100 Meg 0.20% 20 ppm/°C 85°C 1,000 USG1110 - 150M - 0.10%-10ppm 10 KV 150 Meg 0.10% 10 ppm/°C 85°C 1,000 USG1110 - 150M - 0.20%-20ppm 10 KV 150 Meg 0.20% 20 ppm/°C 85°C 1,000 USG1115 - 150M - 0.10%-10ppm 15 KV 150 Meg 0.10% 10 ppm/°C 85°C 1,000 USG1115 - 150M - 0.20%-20ppm 15 KV 150 Meg 0.20% 20 ppm/°C 85°C 1,000 USG1115 - 200M - 0.10%-10ppm 15 KV 200 Meg 0.10% 10 ppm/°C 85°C 1,000 USG1115 - 200M - 0.20%-20ppm 15 KV 200 Meg 0.20% 20 ppm/°C 85°C 1,000 50 Meg Dimensions in inches and (millimeters) B A 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) 2.000 ±.080 (50.80 ±2.03) 2.000 ±.080 (50.80 ±2.03) 3.000 ±.090 (76.20 ±2.29) 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) .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) .350 ±.040 (8.89 ±1.02) .350 ±.040 (8.89 ±1.02) .350 ±.040 (8.89 ±1.02) C .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) .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) Specifications: (Numbers inside circles reference columns in part number table above) 1 2 Precise Low TC Voltage Division Precise Voltage Division Ratio performance can be formed using Type USG UltraStable 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. Tolerance: ±0.10% or ±0.20% measured at room temperature (23°C ±2°C) at 100 Vdc. 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. 1.500 ± .125 (38.10 ± 3.18) Low Absolute TC, Ultra-Precision Tolerance, with Type USF Resistors Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408 © 2013 Caddock Electronics, Inc. Special Matched Resistors for Lowest Ratio TC with Type TK Low TC Radial Lead Resistors CADDOCK A B C dimensions in inches AND (MILLIMETERS) e-mail: [email protected] • web: www.caddock.com For Caddock Distributors listed by country see caddock.com/contact/dist.html Sales and Corporate Office 1717 Chicago Avenue Riverside, California 92507-2364 Phone: (951) 788-1700 Fax: (951) 369-1151 L-358.0213