Type MG Precision High Voltage Resistors Page 1 of 2 Now with Extended Resistance Range to 10,000 Megohms and Additional Models Temperature Coefficient as tight as 80 ppm/C, Combined with Excellent Long-Term Stability and Precision Tolerances. Preconditioning for Power and Voltage Ratings All power ratings and maximum operating voltage ratings are for continuous duty. These ratings are based on prestress voltage levels applied during the manufacturing process to provide for stable resistor performance even under momentary overload conditions. Maximum operating voltages 60% higher than the values listed in the table may be specified by adding "-15" to the model number (Example: MG750-15). Note that overload and overvoltage ratings do not apply to the "-15" resistors. Resistance ranges for "-15" resistors shown in the table are from "-15 Min." to "Standard Max." Non-Inductive Performance Most models are manufactured with Caddock's Non-Inductive Design which uses a serpentine resistive pattern that provides for neighboring lines to carry current in opposite directions, thereby achieving maximum cancellation of flux fields over the entire length of the resistor. This efficient non-inductive construction is accomplished without derating of any performance advantages. Caddock's Micronox(R) resistance films are the source of the Type MG Precision High Voltage Resistors' outstanding combination of performance features: * Single-resistor values as high as 10,000 Megohms. * Maximum continuous operating voltages as high as 48,000 volts ("-15" ratings). * Overvoltage capabilities of 150% of standard working voltages for all models and values, (except "-15" ratings). * Resistance Tolerances from 1.0% to 0.1%. * Temperature Coefficient, for standard resistance range, of 80 ppm/C in combination with resistance tolerances as tight as 0.1%. * Type MG resistors have demonstrated stability of 0.01% per 1,000 hours in extended load life testing of standard resistance range values. This exceptional performance has been proven through many years of use in equipment that demands the highest reliability and stability, including TWT amplifiers, X-ray systems, geophysical instruments, and medical electronics. Model No. MG650 Max. Watt- Continuous Overload Dielect. age Oper. Volt. Rating Strength 0.5 600 Type 1 750 Resistance Min. 200 -15 Min. Standard Max. N/A 5 Meg 0.5 600 Type 1 750 200 N/A 8 Meg N/A MG660 0.6 1,000 Type 1 750 400 N/A 10 Meg N/A MG680 0.8 2,000 Type 1 750 600 N/A 20 Meg N/A MG710 1.0 4,000 Type 1 750 800 N/A 50 Meg N/A MG712 0.6 1,000 Type 2 750 800 N/A 20 Meg N/A MG714 1.0 1,000 Type 2 750 200 6.5 Meg 20 Meg N/A MG715 1.0 2,000 Type 2 750 400 26 Meg 50 Meg N/A MG716 1.5 4,000 Type 2 750 600 70 Meg 75 Meg N/A MG717 1.5 2,000 Type 2 750 600 17 Meg 75 Meg 225 M MG720 2.0 6,000 Type 2 750 1K 150 Meg N/A MG721 2.0 4,000 Type 2 750 200 100 Meg 300 M MG725 2.5 10,000 Type 2 750 1.5 K 200 Meg N/A MG730 3.0 6,000 Type 2 1,000 500 250 Meg 750 M 51 Meg N/A 77 Meg A MG731 2.6 4,000 Type 2 1,000 200 40 Meg 150 Meg 750 M MG735 3.6 10,000 Type 2 1,000 750 178 Meg 300 Meg 1,000 M MG740 3.6 6,000 Type 2 1,000 300 64 Meg 300 Meg 1,500 M MG745 5.0 15,000 Type 2 1,000 1K 288 Meg 500 Meg 1,500 M MG750 5.0 10,000 Type 2 1,000 400 128 Meg 500 Meg 2,500 M MG780 7.5 15,000 Type 2 1,000 600 192 Meg 750 Meg 3,750 M MG785 8.0 20,000 Type 2 1,000 800 320 Meg 1,000 Meg 5,000 M MG810 10.0 25,000 Type 2 1,000 1K 400 Meg 1,250 Meg 6,250 M MG815 15.0 30,000 Type 2 1,000 1K 384 Meg 2,000 Meg 10,000 M 1.000 .040 .094 .015 (25.40 1.02) (2.39 .38) .140 .030 .400 .060 (10.16 .152) (3.56 .76) .150 .030 .562 .060 (14.27 1.52) (3.81 .76) .140 .030 .750 .060 (19.05 1.52) (3.56 .76) .140 .030 1.000 .060 (25.40 1.52) (3.56 .76) .240 .030 .710 .050 (18.03 1.27) (6.10 .76) .140 .030 1.500 .080 (38.10 2.03) (3.56 .76) .240 .030 1.000 .050 (25.40 1.27) (6.10 .76) .140 .030 2.000 .080 (50.80 2.03) (3.56 .76) .240 .030 1.500 .080 (38.10 2.03) (6.10 .76) 1.000 .060 .315 .030 (25.40 1.52) (8.00 .76) .240 .030 2.000 .080 (50.80 2.03) (6.10 .76) .315 .030 1.500 .060 (38.10 1.52) (8.00 .76) .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .032 .002 (.81 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .040 .002 (1.02 .05) .025 .002 (.64 .05) .040 .002 (1.02 .05) .025 .002 (.64 .05) .040 .002 (1.02 .05) .040 .002 (1.02 .05) .040 .002 (1.02 .05) .040 .002 (1.02 .05) 6.000 .120 .350 .040 .040 .002 (152.40 3.05) (8.89 1.02) (1.02 .05) Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas. (c) 2004 Caddock Electronics, Inc. C .240 .030 .040 .002 3.000 .100 (76.20 2.54) (6.10 .76) (1.02 .05) .315 .030 .040 .002 2.125 .060 (53.98 1.52) (8.00 .76) (1.02 .05) .315 .030 .040 .002 3.125 .060 (79.38 1.52) (8.00 .76) (1.02 .05) .315 .030 .040 .002 4.000 .120 (101.60 3.05) (8.00 .76) (1.02 .05) .315 .030 .040 .002 5.000 .120 (127.00 3.05) (8.00 .76) (1.02 .05) Models with low inductance construction are in shaded areas. Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408 B .313 .020 .094 .015 (7.95 .51) (2.39 .38) .313 .030 .109 .025 (7.95 .76) (2.77 .64) .500 .030 .094 .015 (12.70 .76) (2.39 .38) .750 .030 .094 .015 (19.05 .76) (2.39 .38) N/A MG655 N/A Dimensions in inches and (millimeters) Extended Max. CADDOCK Specifications: Resistance Tolerance: Resistance Range Tolerance Standard 1%, 0.5%, 0.25%, 0.1% St'd with "-15" rating 1% Extended Range 1% Temperature Coefficient: Resistance Range TC Specifications Standard and St'd with "-15" rating 80 ppm/C from -15C to +105C, referenced to +25C. Extended Range 80 ppm/C from +25C to +105C, -200 ppm/C to +50 ppm/C from -15C to +25C. Insulation Resistance: 10,000 Megohms, min. Overload/Overvoltage: 5 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds. Type 1: DC Voltage Type 2: DC Voltage or VrmsAC Resistance Range Overload/Overvoltage, R Standard 0.5% max. St'd with "-15" rating N/A Extended Range 0.8% max. Thermal Shock: Mil-Std-202, Method 107, Cond. C, R 0.25% max. Moisture Resistance: Mil-Std-202, Method 106, R 0.4% max. Load Life: 1,000 hours at +125C at rated voltage, not to exceed rated power. Resistance Range Load Life, R Standard 0.5% max. St'd with "-15" rating 0.8% max. Extended Range 0.8% max. Solderable Leads Encapsulation: High Temperature Silicone Conformal. e-mail: caddock@caddock.com * 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 28_IL110.1004 Type MG Precision High Voltage Resistors Page 2 of 2 MG650 MG655 MG660 MG680 MG710 MG712 MG714 MG715 MG716 N MG720 MG725 MG717 Non-inductive performance with Caddock's exclusive design Most models are available with Caddock's Non-inductive Serpentine Pattern MG721 MG730 MG735 MG745 MG731 MG740 MG750 MG780 MG785 MG810 MG815 Certain products shown in this catalog are covered by one or more patents, there are also patents pending. 1.500 .125 (38.10 3.18) B A C For immediate engineering assistance in developing Low Ratio TC matched high voltage resistor sets, contact our Applications Engineering and we will be pleased to offer the best solution from our high voltage resistor product capabilities. DIMENSIONS IN INCHES AND (MILLIMETERS) Derating Curve: Design Assistance in Developing High Voltage Resistor Sets with Low TC Tracking. 100 80 Ordering Information: RATED POWER OR 60 RATED VOLTAGE, % 40 Model Number: 20 0 25 75 125 175 225 275 AMBIENT TEMPERATURE, C Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408 (c) 2004 Caddock Electronics, Inc. CADDOCK MG750 -100M - 1% Tolerance Resistor Value: e-mail: caddock@caddock.com * 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 28_IL110.1004