HUNTINGTON ELECTRIC, INCORPORATED Page 16 RESISTORS FOR THE AUDIO INDUSTRY Non-magnetic, non-inductive, all welded construction greatly enhances frequency response. Combined with Aryton-Perry winding inductive reactance and signal loss are almost totally eliminated. Meets or exceeds the specifications in MIL-PRF-26 for wirewound resistors. Meets the applicable specifications of MIL-STD-202, method 208 Core: Alumina ceramic. This material provides significantly broader heat dissipation compared to that of normal steatite ceramic core. Element: Nickel-chromium or nickel-copper alloys used. Leads: Tinned Copper with Silver-plated endcaps . Mills P/N Dimensions (in Inches) A B C D E MRA05 0.562 0.167 1.500 0.032 0.650 MRA10 0.875 0.312 1.500 0.032 MRA12 1.188 0.312 1.500 0.032 Test General Electric Specifications Tolerance ± 5% ± 1% Dielectric Strength MRA05: 500 VAC MRA10, MRA12 1000 VAC TCR 10+ ohms: 1-10 ohms: <1 ohm: ±20ppm/ºC ±50ppm/ºC ±90ppm/ºC MRA05 5 seconds @ 5X rated power Short Time Overload MRA10, MRA12 5 seconds @ 10X rated power Pow er Rating Min Watts Ω Type U Type V Std R an g e Ω Max Ω 4.0 5.0 .01 1.0 to 2.0 K 15.0 K 0.975 7.0 10.0 .05 0.5 to 15.0 K 35.0 K 1.280 10.0 12.0 .05 0.5 to 40.0 K 85.0 K Test Limits Conditions Type U Type V Dielectric Withstanding Voltage 1,000V rms, 1 minute ±(0.1% +0.05Ω) ∆R ±(0.1% +0.05Ω) ∆R High Frequency Vibration ±(0.1% +0.05Ω) ∆R ±(0.2% +0.05Ω) ∆R 10 to 2,000Hz, 20g peak, 2 directions 6 hrs ea High Temperature Exposure 250 hrs @ 350ºC ±(0.5% +0.05Ω) ∆R ±(4.0% +0.05Ω) ∆R Load Life 2,000 hrs @ 25ºC at rated power, 1.5 hrs ON, 0.5 hrs Off ±(0.5% +0.05Ω) ∆R ±(3.0% +0.05Ω) ∆R Low Temperature Storage minus 65ºC for 24 hours ±(0.2% +0.05Ω) ∆R ±(2.0% +0.05Ω) ∆R Moisture Resistance MIL-STD 202 Method 106 ±(0.2% +0.05Ω) ∆R ±(2.0% +0.05Ω) ∆R Shock, Specified Pulse MIL-STD 202 Method 213, 100g's for 6milliseconds, 10 shocks ±(0.1% +0.05Ω) ∆R ±(0.2% +0.05Ω) ∆R Shock, Thermal Rated power applied till thermally stable, then 15 minutes @ minus 55ºC ±(0.2% +0.05Ω) ∆R ±(2.0% +0.05Ω) ∆R Short Time Overload 5x rated power (.167 diameter and smaller) 10x rated power (.218 diameter and larger) ±(0.2% +0.05Ω) ∆R ±(2.0% +0.05Ω) ∆R Terminal Strength 10 pound pull test, 5-10 seconds torsion test, 3 directions 360º each ±(0.1% +0.05Ω) ∆R ±(1.0% +0.05W) ∆R MILLS RESISTOR DIVISION Order Hotline: 916-422-5461 Fax: 916-422-1409 Visit our website @ www.millsresistor.com