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Sense Resistors for the Super LDO Regulator by Daryl Sugasawara

Conductor Thickness

Application Hint 21
Micrel
Application Hint 21
Sense Resistors for the Super LDO Regulator by Daryl Sugasawara
Power Dissipation The power dissipation of sense resistors used in Super LDO regulator circuits is small and generally does not require the power dissipation capability found in most low-value resistors. Wire Resistance Table (Copper Wire)
AWG Wire Size 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Resistance at 20°C 10-6 / cm 32.70 41.37 52.09 65.64 82.80 104.3 131.8 165.8 209.5 263.9 332.3 418.9 531.4 666.0 842.1 1062.0 1345.0 1687.6 2142.7 2664.3 3402.2 4294.6 5314.9 6748.6 8572.8 10849 13608 16801 21266 27775 35400 43405 54429 70308 85072 10-6 / in 83.06 105.1 132.3 166.7 210.3 264.9 334.8 421.1 532.1 670.3 844.0 1064.0 1349.8 1691.6 2138.9 2697.5 3416.3 4286.5 5442.5 6767.3 8641.6 10908.3 13499.8 17141.4 21774.9 27556.5 34564.3 42674.5 54015.6 70548.5 89916.0 110248.7 138249.7 178582.3 216082.9
Conductor Thickness
Conductor Width in 0.025 0.050 0.100 0.200 0.500 0.025 0.050 0.100 0.200 0.500 0.025 0.050 0.100 0.200 0.500 0.025 0.050 0.100 0.200 0.500
Resistance m / in 39.3 19.7 9.83 4.91 1.97 19.7 9.83 4.91 2.46 0.98 9.83 4.91 2.46 1.23 0.49 6.5 3.25 1.63 0.81 0.325
(18µm)
1 (35µm)
2oz / ft2 (70µm)
3oz / ft2 (106µm)
4-Lead Resistor Manufacturers Dale Electronics, Columbus, NE ........ (402) 563-6506 Vishay Resistors, Malvern, PA .......... (215) 644-1300
Super LDO is a trademark of Micrel, Inc.