toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com 37 (888) 734-7347 sm series ? surface mount - general purpose/precision wirewound * zero ohm available on all sizes . features ? high temperature molded encapsulation ? tinned copper terminals ? flex termination for absorbing thermal expansion ? available in non-inductive styles ? all welded construction electrical specifications type power rating (watts) @ 70c maximium working voltage resistance temperature coefficient ohmic range and tolerance .1%, .5%, 1% & 5% sm1 1.0 w 25.0 100 ppm/c 20 ppm/c 0.01 ? ? 10 ?? 10 ? ? 1 sm2 2.0 w 50.0 100 ppm/c 20 ppm/c 0.01 ? ? 10 ?? 10 ? ? 1k sm2a 2.0 w 60.0 100 ppm/c 0.01 ? ? 10 ?? sm3 3.0 w 100.0 100 ppm/c 20 ppm/c 0.01 ? ? 10 ?? 10 ? ? 3k mechanical specifications type a body length b total length c body height d body width e termination width f termination length units tolerance 0.015 0.032 0.015 0.015 0.015 0.015 0.4 0.81 0.4 0.4 0.4 0.4 sm1 .260 6.6 .280 7.1 .140 3.6 .150 3.8 .090 2.3 .100 2.5 inches mm sm2 .410 10.4 .435 11.1 .180 4.6 .240 6.1 .100 2.5 .115 2.9 inches mm sm2a .475 12.1 .500 12.7 .140 3.6 .305 7.8 .110 2.8 .115 2.9 inches mm sm3 .629 16.0 .708 18.0 .256 6.5 .276 7.0 .110 2.8 .115 2.9 inches mm how to order sm 2 1k 1% r sei type code nominal resistance tolerance packaging code size tolerance series code description pkg qty 1 2815 .1% sm1 r 13" reel 1,500 2 4424 .5% sm2 r 13" reel 800 2a 5031 1% sm2a r 13" reel 1,200 3 7128 5% sm3 r 13" reel 750
toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com sm series ? surface mount - general purpose/precision wirewound 38 (888) 734-7347 performance characteristics test maximum results load life 1% maximum short time overload .5% maximum temperature cycling .5% maximum moisture resistance 1% maximum
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