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| Type MG Precision High Voltage Resistors Page 1 of 2 Temperature Coefficient as tight as 80 ppm/C, Combined with Excellent Long-Term Stability and Precision Tolerances. 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. Max. Watt- Continuous Overload Dielect. age Oper. Volt. Rating Strength Resistance Min. Now with Extended Resistance Range to 10,000 Megohms and Additional Models 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. A B C -15 Min. Standard Max. Extended Max. Dimensions in inches and (millimeters) Specifications: Resistance Range MG650 MG655 0.5 0.5 600 600 Type 1 Type 1 Type 1 Type 1 Type 1 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 Type 2 750 750 200 200 N/A N/A 5 Meg 8 Meg N/A N/A MG660 MG680 MG710 0.6 0.8 1.0 1,000 2,000 4,000 750 750 750 400 600 800 N/A N/A N/A 10 Meg 20 Meg 50 Meg N/A N/A N/A MG712 MG714 0.6 1.0 1,000 1,000 750 750 800 200 N/A 6.5 Meg 26 Meg 70 Meg 17 Meg 20 Meg 20 Meg N/A N/A MG715 MG716 MG717 1.0 1.5 1.5 2,000 4,000 2,000 750 750 750 400 600 600 50 Meg 75 Meg 75 Meg N/A N/A 225 M MG720 MG721 2.0 2.0 6,000 4,000 750 750 1K 200 N/A 51 Meg 150 Meg 100 Meg N/A 300 M MG725 MG730 MG731 2.5 3.0 2.6 10,000 6,000 4,000 750 1,000 1,000 1.5 K 500 200 N/A 77 Meg 200 Meg 250 Meg 150 Meg N/A 750 M 750 M 40 Meg MG735 MG740 3.6 3.6 10,000 6,000 1,000 1,000 750 178 Meg 300 300 Meg 300 Meg 1,000 M 1,500 M 64 Meg 288 Meg MG745 MG750 MG780 5.0 5.0 7.5 15,000 10,000 15,000 1,000 1,000 1,000 1K 500 Meg 500 Meg 750 Meg 1,500 M 2,500 M 3,750 M 400 128 Meg 600 192 Meg MG785 MG810 8.0 10.0 20,000 25,000 1,000 1,000 800 320 Meg 1,000 Meg 1K 5,000 M 6,250 M 400 Meg 1,250 Meg .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) 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) .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) Resistance Tolerance: Tolerance .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) Standard St'd with "-15" rating Extended Range 1%, 0.5%, 0.25%, 0.1% 1% 1% .025 .002 (.64 .05) .025 .002 (.64 .05) .032 .002 (.81 .05) .025 .002 (.64 .05) .025 .002 (.64 .05) Temperature Coefficient: Resistance Range TC Specifications 80 ppm/C from -15C to +105C, referenced to +25C. 80 ppm/C from +25C to +105C, -200 ppm/C to +50 ppm/C from -15C to +25C. Standard and St'd with "-15" rating Extended Range .040 .002 (1.02 .05) .025 .002 (.64 .05) .040 .002 (1.02 .05) .025 .002 (.64 .05) .040 .002 (1.02 .05) 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 Standard St'd with "-15" rating Extended Range Overload/Overvoltage, R 0.5% max. N/A 0.8% max. .040 .002 (1.02 .05) .040 .002 (1.02 .05) .040 .002 (1.02 .05) 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 Standard St'd with "-15" rating Extended Range Load Life, R 0.5% max. 0.8% max. 0.8% max. MG815 15.0 30,000 1,000 1K 384 Meg 2,000 Meg 10,000 M 6.000 .120 .350 .040 .040 .002 (152.40 3.05) (8.89 1.02) (1.02 .05) Models with low inductance construction are in shaded areas. Models with Caddock's Non-Inductive Resistance Pattern are in non-shaded areas. Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408 (c) 2004 Caddock Electronics, Inc. CADDOCK Solderable Leads Encapsulation: High Temperature Silicone Conformal. Sales and Corporate Office 1717 Chicago Avenue Riverside, California 92507-2364 Phone: (951) 788-1700 Fax: (951) 369-1151 28_IL110.1004 e-mail: caddock@caddock.com * web: www.caddock.com For Caddock Distributors listed by country see caddock.com/contact/dist.html Type MG Precision High Voltage Resistors Page 2 of 2 MG650 MG655 MG660 MG680 MG710 MG712 MG714 MG715 MG716 MG720 MG725 MG717 MG721 MG730 MG735 MG745 N Non-inductive performance with Caddock's exclusive design Most models are available with Caddock's Non-inductive Serpentine Pattern 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) A B C Design Assistance in Developing High Voltage Resistor Sets with Low TC Tracking. 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: 100 80 RATED POWER OR 60 RATED VOLTAGE, % 40 Ordering Information: Model Number: 25 75 125 175 225 275 AMBIENT TEMPERATURE, C 20 0 MG750 -100M - 1% Tolerance Resistor Value: Sales and Corporate Office 1717 Chicago Avenue Riverside, California 92507-2364 Phone: (951) 788-1700 Fax: (951) 369-1151 28_IL110.1004 Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408 (c) 2004 Caddock Electronics, Inc. CADDOCK e-mail: caddock@caddock.com * web: www.caddock.com For Caddock Distributors listed by country see caddock.com/contact/dist.html |
Price & Availability of MG740
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