toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com 77 (888) 734-7347 rev 06/08 swt/ewt series ? non-flammable edgewound tubular wire wound *ewt will have the same electrical performance as swt series features ? high current capability ? suitable for soldering or thru bolt connections ? rohs compliant / lead-free ? wirewound ribbon on ceramic substrate ? refer to appropriate mounting spec sheet for non standard tab connections ? swt -silicone coating provides power derating to 350c ? ewt -vitreous enamel coating provides power derating to 500c electrical specifications type / code* power rating (watts) @ 70c dielectric strength vac ohmic range and tolerance 5%, 10% swt 12 12w 1,000 0.1 ? ? 51k ? swt 25 25w 2,500 1 ? ? 30k ? swt 50 50w 2,500 0.1 ? ? 50k ? swt 100 100w 2,500 0.1 ? ? 100k ? swt 150 150w 2,500 0.1 ? ? 150k ? swt 175 175w 2,500 0.15 ? ? 100k ? swt 200 200w 2,500 0.1 ? ? 200k ? swt 225 225w 2,500 0.2 ? ? 130k ? swt 250 250w 2,500 0.5 ? ? 250k ? swt 300 300w 2,500 0.5 ? ? 300k ? swt 400 400w 2,500 0.5 ? ? 400k ? swt 500 500w 2,500 0.5 ? ? 500k ? swt 700 700w 2,500 1 ? ? 600k ? swt 1000 1000w 2,500 1 ? ? 1m ? swt 1300 1300w 2,500 1 ? ? 1.3m ? 1 order appropriate mounting part numner how to order ewt m 50 200 5% b sei type termination code nominal resistance tolerance packaging type description code description power rating tolerance code description swt silicone coating (std) - std tab connection 12 225 5% b bulk ewt vitreous enamel m mounting hardware 1 25 250 10% s spring clips 1 50 300 l welded straight leads 100 400 a adjustable 150 500 175 700 200 1000 1300
toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com swt/ewt series ? non-flammable edgewound tubular wire wound 78 (888) 734-7347 rev 06/08 *ewt series will have the same mechani cal specifications as swt series mechanical specifications type / code* od id f l units tol e r a nc e 0.04 0.04 0.04 0.08 inches 1.0 1.0 1.0 2.0 mm swt12 0.31 7.94 0.188 4.76 0.47 12.0 1.75 44.4 inches mm swt25 0.56 14.3 0.31 7.94 0.47 12.0 2.00 51.0 inches mm swt50 0.56 14.3 0.31 7.94 0.75 19.0 4.00 102 inches mm swt100 0.75 19.1 0.50 12.7 0.67 17.0 6.50 165 inches mm swt150 1.10 28.0 0.75 19.1 0.67 17.0 7.11 206 inches mm swt175 1.13 28.6 0.75 19.1 0.67 17.0 8.50 216 inches mm swt200 1.38 35.0 0.75 19.1 0.67 17.0 8.74 222 inches mm swt225 1.125 28.6 0.75 19.1 0.71 18.0 10.5 267 inches mm swt250 1.57 40.0 1.125 28.6 0.71 18.0 8.74 222 inches mm swt300 1.57 40.0 1.125 28.6 0.71 18.0 10.71 272 inches mm swt400 1.57 40.0 1.125 28.6 0.71 18.0 13.46 342 inches mm swt500 2.50 63.5 1.75 44.5 1.10 28.0 12.00 305 inches mm swt700 1.97 50.0 1.41 35.7 1.10 28.0 18.18 462 inches mm swt1000 2.50 63.5 1.75 44.5 1.18 30.0 20.00 508 inches mm swt1300 2.56 65.0 1.75 44.5 1.18 30.0 26.26 667 inches mm .
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