rev. 7 f eatures ? spiral wound, ribbon element, nonflammable coating. ? excellent power dissipation, small size, high power ratings. ? excellent performance in heavy load applications. ? rugged construction for long life. p art n umbering s ystem MDR 160w value j res. tol. 5% = j resistance 0r1 1r 100r power rating meritek wire wound resistor series e lectrical p erformance characteristics limits resistance and resistance tolerance range resistance tolerance 5%(j) temperature coefficient fchr-2 0.14x1.2m/m 1000~1200ppm/c max (according to the material) power rating load r/r (1% + 0.05 ? ) temperature 350c max short-time overload r/r (2% + 0.05 ? ) insulation resistance dc500v 100m ? min dielectric withstanding voltage ac2500v 1.5ma 1 minute wire-wound power resisto r MDR / mdqr / mzr
rev. 7 m dr t ype dimensions(mm) resistance power rating a1 b2 c2 d0.1 e0.2 f1 g2 h2 i2 j2 k0.1 range MDR-10w 12.5 45 35 2.1 4 10 55 56 57 30 4 1 ? ~10k ? MDR-20w 16.5 60 45 3 5 12 70 84 100 37 4 1 ? ~20k ? MDR-30w 16.5 80 65 3 5 12 90 104 120 37 4 1 ? ~30k ? MDR-40w 16.5 110 95 3 5 12 120 134 150 37 4 1 ? ~40k ? MDR-50w 25 110 92 5.2 8 19 120 142 164 58 6 0.1 ? ~50k ? MDR-60w 28 90 72 5.2 8 17 101 123 145 60 6 0.1 ? ~60k ? MDR-80w 28 110 92 5.2 8 17 121 143 165 60 6 0.1 ? ~80k ? MDR-100w 28 140 122 5.2 8 17 151 173 195 60 6 0.1 ? ~100k ? MDR-120w 28 160 142 5.2 8 17 171 193 215 60 6 0.1 ? ~120k ? MDR-150w 28 195 177 5.2 8 17 206 229 250 60 6 0.1 ? ~150k ? MDR-160w 35 185 167 5.2 8 17 197 217 245 75 8 0.1 ? ~160k ? MDR-200w 35 210 192 5.2 8 17 222 242 270 75 8 0.1 ? ~200k ? MDR-225w 40 195 173 5.2 8 17 207 227 255 77 8 0.1 ? ~200k ? MDR-250w 40 210 188 5.2 10 18 222 242 270 77 8 0.5 ? ~250k ? MDR-300w 40 260 238 5.2 10 18 272 292 320 77 8 0.5 ? ~300k ? MDR-400w 40 330 308 5.2 10 18 342 380 390 77 8 0.5 ? ~400k ? MDR-500w 50 330 304 6.2 12 28 346 367 399 105 9 0.5 ? ~500k ? MDR-600w 50 400 384 6.2 12 28 416 437 469 105 9 1 ? ~600k ? MDR-700w 50 460 384 6.2 12 28 462 500 530 105 9 1 ? ~600k ? MDR-800w 60 460 425 6.2 15 30 480 504 533 112 9 1 ? ~800k ? MDR-1000w 60 540 505 6.2 15 30 560 584 613 112 10 1 ? ~1m ? MDR-3000w 65 650 620 6.2 15 30 667 700 715 115 10 1 ? ~1.3m ? wire-wound power resisto r MDR / mdqr / mzr
rev. 7 m dqr t ype dimensions(mm) resistance power rating a1 b2 c2 d0.1 e0.2 f1 g2 h2 i2 j2 k0.1 range mdqr-75w 25 110 95 5.2 8 19 120 142 164 58 6 0.1 ? ~8k ? mdqr-90w 28 90 72 5.2 8 17 101 123 145 60 6 0.1 ? ~9k ? mdqr-120w 28 110 92 5.2 8 17 121 143 165 60 6 0.2 ? ~12k ? mdqr-150w 28 140 122 5.2 8 17 151 173 195 60 6 0.2 ? ~15k ? mdqr-180w 28 160 142 5.2 8 17 171 193 215 60 6 0.2 ? ~18k ? mdqr-225w 28 195 177 5.2 8 17 206 229 250 60 6 0.2 ? ~20k ? mdqr-240w 35 185 167 5.2 8 17 197 219 245 75 8 0.5 ? ~25k ? mdqr-300w 35 210 192 5.2 8 17 222 242 270 75 8 0.5 ? ~30k ? mdqr-375w 40 210 188 5.2 10 18 222 242 270 77 8 0.5 ? ~40k ? mdqr-450w 40 260 238 5.2 10 18 272 292 320 77 8 0.5 ? ~45k ? mdqr-600w 40 330 308 5.2 10 18 342 380 390 77 8 0.5 ? ~60k ? mdqr-750w 50 330 304 6.2 12 28 346 367 399 105 9 0.5 ? ~75k ? mdqr-900w 50 400 374 6.2 12 28 416 437 469 105 9 1 ? ~90k ? mdqr-1000w 50 460 425 6.2 12 30 480 504 533 105 9 1 ? ~100k ? mdqr-1200w 60 460 425 6.2 15 30 480 504 533 112 10 1 ? ~120k ? mdqr-1500w 60 540 505 6.2 15 30 560 584 613 112 10 1 ? ~150k ? mdqr-2000w 65 650 620 6.2 15 30 667 700 715 115 10 1 ? ~200k ? wire-wound power resisto r mMDR / mdqr / mzr MDR / mdqr / mzr
rev. 7 m zr t ype power dimensions(mm) resistance rating a2 b2 c2 d2 e1 f1 g1 h1 i1 range mzr-80w 121.5 140 157 170 28 46 14 10 21.5 0.1 ? ~80k ? mzr-100w 141.5 160 177 190 28 46 14 10 21.5 0.1 ? ~100k ? mzr-120w 166.5 185 202 215 28 46 14 10 21.5 0.1 ? ~120k ? mzr-150w 166.5 185 202 215 35 50 14 10 21.5 0.1 ? ~150k ? mzr-200w 191.5 210 227 240 35 50 14 10 21.5 0.1 ? ~200k ? mzr-250w 235.5 254 271 284 35 50 14 10 21.5 0.1 ? ~250k ? mzr-300w 281.5 300 317 330 35 50 14 10 21.5 0.1 ? ~300k ? wire-wound power resisto r mMDR / mdqr / mzr MDR / mdqr / mzr
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