Type SR Precision Current Sense Resistors Non-inductive Design - Compact Footprint Minimizes Circuit Board Space Kelvin Terminals (Four Wire) - Resistance Values 0.005 to 1.00 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. Resistance Power Rating at Voltage Rating Model No. Terminal Material 70C Min. Max. * SR10 0.008 1.00 1.0 Watt Power Limited Solderable SR20 0.005 1.00 2.0 Watts Power Limited Solderable SR10 Standard Resistance Values: 0.008 0.020 0.040 0.15 0.40 0.025 0.050 SR10 PACKAGE DIMENSIONS 0.010 0.20 0.50 0.012 0.030 0.075 0.25 0.75 Side view Back view Front view 0.033 0.10 0.015 0.30 1.00 .090 (2.29) .365 .020 MAX. (9.27 .51) SR20 Standard Resistance Values: .370 .015 SR10 0.005 0.020 0.040 0.15 0.40 (9.40 .38) 0.025 1% 0.008 0.025 0.050 0.20 0.50 .125 .020 0.010 0.030 0.075 0.25 0.75 (3.18 .51) 0.015 0.033 0.10 0.30 1.00 .045 (1.14) .032 .007 .025 (.64) Custom resistance values can be manufactured for (.81 .18) high quantity applications. Please contact Caddock SR20 PACKAGE DIMENSIONS Applications Engineering565 .020 (14.35 .51) .090 MAX. Specifications: (2.29 MAX.) Resistance Tolerance: 1.0% SR20 .400 .015 0.050 (10.16 .38) 1% Temperature Coefficient: TC referenced to .125 .020 +25C, R taken at -15C and +105C. (3.18 .51) .045 (1.14) 0.081 to 1.00 ohm -50 to +100 ppm/C .032 .007 0.025 to 0.080 ohm 0 to +150 ppm/C .025 (.64) DIMENSIONS IN INCHES AND (MILLIMETERS) (.81 .18) 0.008 to 0.024 ohm 0 to +200 ppm/C 0.005 to 0.007 ohm 0 to +300 ppm/C CIRCUIT BOARD LAYOUT NOTES Load Life: 1000 hours at rated power at +70C, SR20 SR10 R (0.2 percent + 0.00001 ohm) max. Thermal Shock: Mil-Std-202, Method 107, Cond. A, R (0.2 percent + 0.00001 ohm) max. Moisture Resistance: Mil-Std-202, Method 106, B B A A R (0.2 percent + 0.00001 ohm) max. Scale: .200 (5.08) Encapsulation: Polymer over resistance element100 (2.54) .100 (2.54) .100 (2.54) actual size .200 (5.08) .100 (2.54) Power Derating Curve: C S S C 100 S S C C Power rating: 80 * The power rating 60 .045 (1.14) .045 (1.14) .045 (1.14) .045 (1.14) should be limited as 40 .025 (.64) .025 (.64) .025 (.64) .025 (.64) 20 shown by the derating Section BB Section AA curve based upon the 0 25 70 100 150 Measurement note: For purposes of these specifications, resistance measurement shall maximum ambient TEMPERATURE, C be made using Kelvin connections (four wire) with appropriate current and sense con- temperature. The derating curve is based on still nections to the device terminals. air with natural convection around the resistor. C = Current connection S = Sense connection Ordering Information: Circuit Board Layout: The circuit board traces connecting to the current terminals must SR10 - 0.050 - 1% be sized appropriately for the current flowing through the trace. For example 0.005 Tolerance Model Number: operated at 2.0 Watts would have 20 amps flowing through the circuit board traces into Resistor Value: the current terminals. Sales and Applications Engineering 17271 North Umpqua Hwy. ELECTRONICS, INC. Roseburg, Oregon 97470-9422 e-mail: caddock caddock.com web: www.caddock.com Phone: (541) 496-0700 For Caddock Distributors listed by country see caddock.com/contact/dist.html Fax: (541) 496-0408 2003-2017 Caddock Electronics, Inc. 28 IL126.01717 RATED LOAD, %X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Current Sense Resistors - Through Hole category: Click to view products by Caddock manufacturer: Other Similar products are found below : CPSL07R1000JB145 SR10-0.015-1% SR20-0.008-1% HPCR0402F12K0K9 HPCR0402F130RK9 HPCR0402F13K0K9 HPCR0402F17K4K9 HPCR0402F180KK9 HPCR0402F180RK9 HPCR0402F1K10K9 HPCR0402F220KK9 HPCR0402F220RK9 HPCR0402F24K0K9 HPCR0402F27K0K9 HPCR0402F2K00K9 HPCR0402F33K0K9 HPCR0402F430KK9 HPCR0402F4K30K9 HPCR0402F4K70K9 HPCR0402F680KK9 HPCR0402F680RK9 HPCR0402F390KK9 HPCR0402F39K0K9 HPCR0402F8K20K9 HPCR0402F560RK9 HPCR0402F2K70K9 HPCR0402F360KK9 HPCR0402F36K0K9 HPCR0402F3K00K9 HPCR0402F3K90K9 HPCR0402F430RK9 HPCR0402F43K0K9 HPCR0402F475KK9 HPCR0402F47K0K9 HPCR0402F51K0K9 HPCR0402F560KK9 HPCR0402F56K0K9 HPCR0402F5K10K9 HPCR0402F5K60K9 HPCR0402F620KK9 HPCR0402F620RK9 HPCR0402F68K0K9 HPCR0402F6K20K9 HPCR0402F6K80K9 HPCR0402F750KK9 HPCR0402F750RK9 HPCR0402F7K50K9 HPCR0402F820KK9 HPCR0402F82K0K9 HPCR0402F910KK9