Type SR Precision Current Sense Resistors Non-inductive Design - Compact Footprint Minimizes Circuit Board Space Kelvin Terminals (Four Wire) - Resistance Values 0.005Q to A.OOQ Type SR Current Sense Resistors utilize Caddock's Micronox® resistance films to achieve a low cost resistor with Non-inductive Performance. This compact construction makes this sense resistor ideal for many current monitoring or control applications. The special performance features of these Type SR Current Sense Resistors include: • Available in Standard Resistances down to 5 milliohm. • Non-inductive Design. • Terminals are constructed for Kelvin connections to the circuit board. • Compact footprint. Front view Side view Back view DIMENSIONS IN INCHES AND (MILLIMETERS) CIRCUIT BOARD LAYOUT NOTES actual size Measurement note: For purposes of these specifications, resistance measurement shall be made using Kelvin connections (four wire) with appropriate current and sense con- nections to the device terminals. C = Current connection S = Sense connection Circuit Board Layout: The circuit board traces connecting to the current terminals must be sized appropriately for the current flowing through the trace. For example; 0.005£2 operated at 2.0 Watts would have 20 amps flowing through the circuit board traces into SR10 Standard Resistance Values: SR20 Standard Resistance Values: Custom resistance values can be manufactured for high quantity applications. Please contact Caddock Applications Engineering. Temperature Coefficient: TC referenced to Load Life: 1000 hours at rated power at +70°C, Thermal Shock: Mil-Std-202, Method 107, Cond. A, Moisture Resistance: Mil-Std-202, Method 106, Encapsulation: Polymer over resistance element. Power Derating Curve: * Power rating: curve based upon the maximum ambient TEMPERATURE,-C temperature. The derating curve is based on still air with natural convection around the resistor. Ordering Information: Model Number:-I "^Tolerance Resistor Value:- Applications Engineering ^^Mk Sales and Corporate Office 17271 North Umpqua Hwy. 1^*1 JL JL JV PI Pf*TBf}Mlf*G IKIf* 1717 Chicago Avenue Roseburg, Oregon 97470-9422 ^^^**m*^J%Jm ^ CLEI fTl/fVfVsO, ffVVs. Riverside, California 92507-2364 Phone: (541) 496-0700 e-mail: [email protected] • web: www.caddock.com Phone: (951) 788-1700 Fax: (541) 496-0408 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (951) 369-1151