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100 Series / SM Series / PC Series Precision Wirewound Resistors • • • • • • • Resistances to 25MOhms Resistance Tolerances to ±0.005% Temperature Coefficients of ±1 ppm/K Power Ratings to 2W 100% Acceptance Tested / Traceable to NIST Long Term Stability / 100ppm/year Matched Resistance Sets to ±0.001% and ±0.5 ppm/K SPECIFICATIONS Type Commercial Wattage ( Watts ) 0.06 0.08 0.10 0.10 0.12 0.15 0.15 0.175 0.20 0.20 0.25 0.25 0.33 0.40 0.50 0.75 1.00 1.50 2.00 Maximum Ohms Minimum Tolerance ( % ) Dimensions Diameter ±0.005” [±0.13mm] Length ±0.025” [±0.64mm] Lead Diameter ±0.002” [±0.05mm] 1 Maximum Working Voltage 75 100 100 100 150 150 100 200 200 200 250 300 400 300 400 600 800 900 1000 SM-2 SM-3 SM-4 SM-13 SM-5 SM-6 139A SM-15 SM-12 100 SM-7 101 102 120 121 129 106 107 108 75k 150k 250k 250k 400k 500k 500k 750k 750k 800k 1M 1.2M 2.5M 3.8M 3.8M 10M 12M 15M 25M 0.005 0.100 [2.5] 0.125 [3.2] 0.125 [3.2] 0.156 [4.0] 0.187 [4.7] 0.187 [4.7] 0.250 [6.4] 0.187 [4.7] 0.187 [4.7] 0.250 [6.4] 0.210 [5.3] 0.250 [6.4] 0.250 [6.4] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.500 [12.7] 0.500 [12.7] 0.500 [12.7] 0.210 [5.3] 0.260 [6.6] 0.375 [9.5] 0.312 [7.9] 0.250 [6.4] 0.295 [7.5] 0.250 [6.4] 0.375 [9.5] 0.450 [11.4] 0.375 [9.5] 0.465 [11.8] 0.500 [12.7] 0.750 [19.1] 0.500 [12.7] 0.750 [19.1] 1.000 [25.4] 1.000 [25.4] 1.500 [38.1] 2.000 [50.8] 1 0.020 [0.5] 0.020 [0.5] 0.025 [0.6] 0.020 [0.5] 0.020 [0.5] 0.025 [0.6] 0.025 [0.6] 0.025 [0.6] 0.025 [0.6] 0.020 [0.5] 0.025 [0.6] 0.032 [0.8] 0.025 [0.6] 0.025 [0.6] 0.032 [0.8] 0.025 [0.6] 0.032 [0.8] 0.025 [0.6] 0.032 [0.8] 0.032 [0.8] 0.032 [0.8] 0.032 [0.8] 0.032 [0.8] 0.032 [0.8] Where more than one lead is listed / the top value is Standard Lead Length = 1.50 [38] Min. Ordering Information Part Number - Resistance - Tolerance - TCR ( If not standard ) Example: SM-6 25kOhms 0.1% Riedon Inc. 1.02 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 3 100 Series / SM Series / PC Series Precision Wirewound Resistors SPECIFICATIONS (continued) PC Series Type Commercial Wattage ( Watts ) 0.125 0.125 0.125 0.25 0.40 0.50 Maximum Ohms 500k 500k 500k 600k 800k 1M 0.005 Minimum Tolerance ( % ) Dimensions Diameter ±0.005” [±0.13mm] Length ±0.025” [±0.64mm] Lead Diameter ±0.002” [±0.05mm] 1 Lead Spacing ±0.015” [±0.4mm] Maximum Working Voltage 150 150 150 150 300 400 100PC 130PC 131PC 101PC 120PC 104PC 0.250 [6.4] 0.250 [6.4] 0.250 [6.4] 0.250 [6.4] 0.375 [9.5] 0.500 [12.7] 0.375 [9.5] 0.312 [7.9] 0.312 [7.9] 0.500 [12.7] 0.500 [12.7] 0.500 [12.7] 1 0.025 [0.6] 0.025 [0.6] 0.025 [0.6] 0.025 [0.6] 0.032 [0.8] 0.032 [0.8] 0.025 [0.6] 0.150 [3.8] 0.150 [3.8] 0.200 [5.1] 0.150 [3.8] 0.200 [5.1] 0.300 [7.6] Where more than one lead is listed / the top value is Standard Lead Length = 1.00 [25] Min. Rectangular Series Type Commercial Wattage ( Watts ) 0.125 0.250 0.300 0.500 Maximum Ohms 500k 750k 500k 1M Dimensions Width ±0.010” [±0.25mm] Height ±0.025” [±0.64mm] Length ±0.010” [±0.25mm] Lead Diameter1 ±0.002” [±0.05mm] Lead Spacing ±0.015” [±0.4mm] Maximum Working Voltage 150 150 150 150 SM-8 SM-9 SP5086 SP5232 0.140 [3.6] 0.150 [3.8] 0.102 [2.6] 0.160 [4.1] 0.250 [6.4] 0.270 [6.9] 0.320 [8.1] 0.525 [13.3] 0.270 [6.9] 0.540 [13.7] 0.300 [7.6] 0.585 [14.9] 0.032 [0.8] 0.032 [0.8] 0.025 [0.6] 0.032 [0.8] 0.125 [3.2] 0.250 [6.4] 0.150 [3.8] 0.400 [10.2] 1 Lead Length = 1.00 [25] Min. Specification Tolerances Temperature Coefficient ( Standard ) ( down to 1ppm on request ) Value ±0.005% to ±1% ( See Derating Curve ) >100W : ±10ppm/K 10W to100W : ±20ppm/K