SM Series Stackpole Electronics, Inc. Surface Mount Wirewound Resistors * * * * * Features: Resistive Product Solutions High temperature molded encapsulation Flex termination for absorbing thermal expansion All welded construction Non-inductive types available as NSM RoHS compliant / lead-free Electrical Specifications Power Rating (Watts) @ 70C Maximum Working Voltage Dielectric Withstanding Voltage Resistance Temperature Coefficient SM 1 1W 25V >500V 100 ppm/C 20 ppm/C SM 2 2W 50V >500V 100 ppm/C 20 ppm/C SM 2A 2W 60V >500V 75 ppm/C 0.01 - 0.06(*) SM 3A 3W 60V >500V 75 ppm/C 0.01 - 0.06(*) SM 3 3W 100V >500V 100 ppm/C 20 ppm/C SM 4 4W 100V >500V 100 ppm/C 20 ppm/C Type / Code Ohmic Range() and Tolerance 0.1%, 0.5%, 1%, 5% 0.01 - 10(*) 10.2 - 1K 0.01 - 10(*) 10.2 - 2K 0.01 - 10(*) 10.2 - 3.01K 0.01 - 10(*) 10.2 - 5K (*) Zero ohm available on all sizes Percent Rated Power (%) Power Derating Curve 100 75 50 25 0 25 50 70 100 150 200 250 275 300 Ambient Temperature (C) How to Order Type SM NSM SEI Type Code Nominal Resistance Tolerance Packaging SM 2 1K 1% R Description Standard Non-inductive Code 1 2 2A 3A 3 4 Size 2815 4324 4827 4827 6528 8035 Rev Date: 02/02/2010 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. Tolerance 0.1% 0.5% 1% 5% 75 Types SM 1 SM 2 SM 2A SM 3, 3A SM4 Qty 1,500 800 1,200 750 350 Description Code 13" Reel R www.seielect.com marketing@seielect.com SM Series Stackpole Electronics, Inc. Surface Mount Wirewound Resistors Resistive Product Solutions Mechanical Specifications Type / Code A Body Length B Total Length C Body Height D Body Width E Termination Width F Termination Length W H L Units SM 1 0.26 0.015 6.6 0.4 0.28 0.032 7.1 0.81 0.14 0.015 3.6 0.4 0.15 0.015 3.8 0.4 0.1 0.015 2.5 0.4 0.09 0.015 2.3 0.4 0.138 3.5 0.13 3.3 0.35 8.9 inches mm SM 2 0.41 0.015 10.4 0.4 0.43 0.032 10.9 0.81 0.18 0.015 4.6 0.4 0.24 0.015 6.1 0.4 0.122 0.015 3.1 0.4 0.09 0.015 2.3 0.4 0.181 4.6 0.157 4 0.583 14.8 inches mm SM 2A 0.455 0.015 11.6 0.4 0.475 0.032 12.1 0.81 0.15 0.015 3.8 0.4 0.27 0.015 6.9 0.4 0.122 0.015 3.1 0.4 0.105 0.015 2.7 0.4 0.169 4.3 0.157 4 0.587 14.9 inches mm SM 3A 0.455 0.015 11.6 0.4 0.475 0.032 12.1 0.81 0.15 0.015 3.8 0.4 0.27 0.015 6.9 0.4 0.122 0.015 3.1 0.4 0.105 0.015 2.7 0.4 0.169 4.3 0.157 4 0.587 14.9 inches mm SM 3 0.625 0.015 15.9 0.4 0.645 0.032 16.4 0.81 0.25 0.015 6.4 0.4 0.275 0.015 7 0.4 0.122 0.015 3.1 0.4 0.13 0.015 3.3 0.4 0.236 6.2 0.165 4.2 0.85 21.6 inches mm SM 4 0.8 0.015 20.3 0.4 0.825 0.032 21 0.81 0.362 0.015 9.2 0.4 0.35 0.015 8.9 0.4 0.24 0.015 6.1 0.4 0.123 0.015 3.1 0.4 0.34 8.6 0.19 4.8 0.95 24.1 inches mm Performance Characteristics Test Results Moisture Resistance Thermal Shock Load Life @ 70C - 1,000 hrs. Shock and Vibration Resistance to Soldering Heat Terminal Strength Dielectric Withstanding Voltage Short Time Overload Low Temperature Operation 1% 0.5% 1% 1% 1 0.5% 0.001% / V 0.2% 0.5% Operating Temperature Range: -55C to +275C Rev Date: 02/02/2010 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 76 www.seielect.com marketing@seielect.com