Surge-Gard Inrush Current Limiter Data Sheets

SURGE-GARD Features

  • Lowers rectifier cost by reducing required peak forward surge current rating
  • Reduces Noise
  • Reduces Fuse Failures
  • High Current Capacity

Installation Options

  • Thru-Hole Leads
  • Insulated/Un-insulated
  • Standoffs
  • Preformed Leads. 

For more information regarding Ametherm’s acquired Surge-GARD Inrush Current Limiter Product Line, please refer to the RTI Surge-Gard Inrush Current Limiters page.


Part Number Resistance @ 25 °C Max. D
(Inches)
Max. T
(Inches)
Lead Diameter
(Inches)
NTC Curve Digi-Key Mouser
SG260 0.5 1.25 0.2 0.04 A 570-1142-ND 995-SG260
SG326 0.5 1.25 0.2 0.04 A SG326-ND 995-SG326
SG100 1 0.9 0.3 0.04 A 570-1143-ND 995-SG100
SG301 1 0.9 0.3 0.04 A SG301-ND 995-SG301
SG405 1 1.25 0.25 0.04 A 570-1144-ND 995-SG405
SG328 1 1.25 0.25 0.04 A 570-1145-ND 995-SG328
SG416 1.3 0.55 0.2 0.04 A 570-1445-ND 995-SG405
SG110 2 0.9 0.35 0.04 A 570-1146-ND 995-SG110
SG302 2 0.9 0.35 0.04 A SG302-ND 995-SG302
SG420 2 1.25 0.3 0.04 A 570-1147-ND 995-SG420
SG355 2 1.25 0.3 0.04 A SG355-ND 995-SG355
SG120 2.5 0.6 0.25 0.032 A 570-1148-ND 995-SG120
SG303 2.5 0.6 0.25 0.032 A SG303-ND 995-SG303
SG130 2.5 0.6 0.25 0.032 A 570-1149-ND 995-SG130
SG304 2.5 0.6 0.25 0.032 A SG304-ND 995-SG304
SG140 2.5 0.6 0.25 0.032 A 570-1150-ND 995-SG140
SG305 2.5 0.6 0.25 0.032 A SG305-ND 995-SG305
SG150 2.5 0.9 0.3 0.04 A 570-1151-ND 995-SG150
SG306 2.5 0.9 0.3 0.04 A SG306-ND 995-SG306
SG160 2.5 0.9 0.3 0.04 A 570-1152-ND 995-SG160
SG307 2.5 0.9 0.3 0.04 A SG307-ND 995-SG307
SG170 4 0.6 0.25 0.04 A 570-1153-ND 995-SG170
SG308 4 0.6 0.25 0.04 A 570-1154-ND 995-SG308
SG32 4 0.9 0.35 0.04 A 570-1155-ND 995-SG32
SG330 4 0.9 0.35 0.04 A 570-1156-ND 995-SG330
SG190 5 0.6 0.25 0.032 A 570-1157-ND 995-SG190
SG310 5 0.6 0.25 0.032 A SG310-ND 995-SG310
SG200 5 0.6 0.25 0.032 A 570-1159-ND 995-SG200
SG311 5 0.6 0.25 0.032 A SG311-ND 995-SG311
SG44 5 0.6 0.25 0.04 A 570-1160-ND 995-SG44
SG332 5 0.6 0.25 0.04 A 570-1446-ND 995-SG332
SG26 5 0.9 0.275 0.04 A 570-1161-ND 995-SG26
SG333 5 0.9 0.275 0.04 A 570-1162-ND 995-SG333
SG210 7 0.6 0.3 0.04 A 570-1165-ND 995-SG210
SG312 7 0.6 0.3 0.04 A SG312-ND 995-SG312
SG64 7 0.95 0.275 0.04 J 570-1163-ND 995-SG64
SG336 7 0.95 0.275 0.04 J 570-1164-ND 995-SG336
SG337 10 0.5 0.25 0.032 A 570-1447-ND 995-SG337
SG220 10 0.45 0.3 0.032 A 570-1166-ND 995-SG220
SG313 10 0.45 0.3 0.032 A 570-1167-ND 995-SG313
SG42 10 0.6 0.35 0.04 A 570-1168-ND 995-SG42
SG338 10 0.6 0.35 0.04 A SG338-ND 995-SG338
SG27 10 0.5 0.35 0.04 A 570-1169-ND 995-SG27
SG314 10 0.5 0.35 0.04 A 570-1170-ND 995-SG314
SG40 10 0.9 0.35 0.04 J 570-1171-ND 995-SG40
SG320 16 0.75 0.25 0.04 J 570-1448-ND SG320
SG230 20 0.5 0.3 0.032 A 570-1173-ND 995-SG230
SG315 20 0.5 0.3 0.032 A SG315-ND 995-SG315
SG240 40 0.625 0.25 0.032 B 570-1174-ND 995-SG240
SG316 40 0.625 0.25 0.032 B SG316-ND 995-SG316
SG250 120 0.925 0.25 0.04 C 570-1176-ND 995-SG250
SG317 120 0.925 0.25 0.04 C SG317-ND 995-SG317