rev date: 02/02/2010 77 www.seielect.com this specification may be changed at any time without prior notice marketing@seielect.com please confirm technical specificatio ns before you order and/or use. sm series surface mount wirewound resistors stackpole electronics, inc. resistive product solutions features: ? high temperature molded encapsulation ? flex termination for absorbing thermal expansion ? all welded construction ? non-inductive types available as nsm ? rohs compliant / lead-free maximum dielectric type / code working withstanding voltage voltage 0.1%, 0.5%, 1%, 5% 0.01 - 10(1) 10.2 - 1k 0.01 - 10(1) 10.2 - 2k sm 2a 2w 60v >500v 75 ppm/oc 0.01 - 0.06(1) sm 3a 3w 60v >500v 75 ppm/oc 0.01 - 0.06(1) 0.01 - 10(1) 10.2 - 3.01k 0.01 - 10(1) 10.2 - 5k (1) zero ohm available on all sizes power rating (watts) @ 70oc resistance temperature coefficient ohmic range( ? ) and tolerance sm 1 1w 25v 100 ppm/oc 20 ppm/oc >500v 100 ppm/oc 20 ppm/oc sm 3 3w 100v 100 ppm/oc 20 ppm/oc >500v >500v sm 2 2w 50v sm 4 4w 100v 100 ppm/oc 20 ppm/oc >500v electrical specifications ambient temperature (oc) 150 200 250 300 25 0 50 100 power derating curve 100 75 50 percent rated power (%) 275 25 70 power derating curve: nominal resistance tolerance 1k 1% type description code size tolerance types qty description code sm standard 1 2815 0.1% sm 1 1,500 nsm non-inductive 24324 0.5% sm 2 800 2a 4827 1% sm 2a 1,200 3a 4827 5% sm 3, 3a 750 36528 sm4 350 48035 13" reel r sei type code packaging sm 2 r how to order
rev date: 02/02/2010 78 www.seielect.com this specification may be changed at any time without prior notice marketing@seielect.com please confirm technical specificatio ns before you order and/or use. sm series surface mount wirewound resistors stackpole electronics, inc. resistive product solutions abcdef body total body body termination termination length length height width width length 0.26 0.015 0.28 0.032 0.14 0.015 0.15 0.015 0.1 0.015 0.09 0.015 0.138 0.13 0.35 inches 6.6 0.4 7.1 0.81 3.6 0.4 3.8 0.4 2.5 0.4 2.3 0.4 3.5 3.3 8.9 mm 0.41 0.015 0.43 0.032 0.18 0.015 0.24 0.015 0.122 0.015 0.09 0.015 0.181 0.157 0.583 inches 10.4 0.4 10.9 0.81 4.6 0.4 6.1 0.4 3.1 0.4 2.3 0.4 4.6 4.0 14.8 mm 0.455 0.015 0.475 0.032 0.15 0.015 0.27 0.015 0.122 0.015 0.105 0.015 0.169 0.157 0.587 inches 11.6 0.4 12.1 0.81 3.8 0.4 6.9 0.4 3.1 0.4 2.7 0.4 4.3 4.0 14.9 mm 0.455 0.015 0.475 0.032 0.15 0.015 0.27 0.015 0.122 0.015 0.105 0.015 0.169 0.157 0.587 inches 11.6 0.4 12.1 0.81 3.8 0.4 6.9 0.4 3.1 0.4 2.7 0.4 4.3 4.0 14.9 mm 0.625 0.015 0.645 0.032 0.25 0.015 0.275 0.015 0.122 0.015 0.13 0.015 0.236 0.165 0.85 inches 15.9 0.4 16.4 0.81 6.4 0.4 7.0 0.4 3.1 0.4 3.3 0.4 6.2 4.2 21.6 mm 0.8 0.015 0.825 0.032 0.362 0.015 0.35 0.015 0.24 0.015 0.123 0.015 0.34 0.19 0.95 inches 20.3 0.4 21.0 0.81 9.2 0.4 8.9 0.4 6.1 0.4 3.1 0.4 8.6 4.8 24.1 mm type / code units sm 1 sm 2 wh l sm 3 sm 4 sm 3a sm 2a mechanical specifications test results moisture resistance 1% thermal shock 0.5% load life @ 70oc - 1,000 hrs. 1% shock and vibration 1% resistance to soldering heat 1 terminal strength 0.5% dielectric withstanding voltage 0.001% / v short time overload 0.2% low temperature operation 0.5% operating temperature range: -55oc to +275oc performance characteristics
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