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| PartNumber | SG42 | SG4208 | SG420 |
| Description | Inrush Current Limiters 10OHM 5AMP | Inrush Current Limiters 2OHM 23AMP | |
| Manufacturer | Ametherm | - | Littelfuse Inc. |
| Product Category | Inrush Current Limiters (ICL) | - | Inrush Current Limiters (ICL) |
| Series | SURGE-GARD | - | SURGE-GARD |
| Type | NTC | - | NTC |
| Packaging | Bulk | - | Digi-ReelR Alternate Packaging |
| Current Rating | 5 A | - | 23 A |
| Tradename | SURGE-GARD | - | SURGE-GARD |
| Operating Temperature Range | 0 C to + 65 C | - | 0 C to + 65 C |
| Width | 0.35 in | - | 0.3 in |
| Tolerance | ±15% | - | ±25% |
| Lead Style | Straight | - | Straight |
| Lead Spacing | 0.310" (7.87mm) | - | * |
| Approvals | CSA, UL | - | CSA, UL |
| R 25°C | 10 Ohm | - | 2.0 Ohm |
| Current Steady State Max | 5A | - | 23A |
| R Current | 0.20 Ohm | - | 0.025 Ohm |
| Diameter | 0.60" (15.24mm) | - | * |
| Resistance | 10 Ohms | - | 2 Ohms |
| Lead Diameter | 0.04 in | - | 0.04 in |
| Mounting Style | - | - | SMD/SMT |
| Number of Poles | - | - | 2 |
| Termination Style | - | - | SMD/SMT |
| Length | - | - | 4.5 mm |
| Package Case | - | - | 1812 (4532 Metric) |
| Mounting Type | - | - | Surface Mount |
| Voltage DC Spark Over Nom | - | - | 420V |
| Impulse Discharge Current 8 20μs | - | - | 1000A (1kA) |
| Fail Short | - | - | No |
| Peak Pulse Current | - | - | 1 kA |
| DC Sparkover | - | - | 420 VDC |
| Number of Electrodes | - | - | 2 Electrode |
| Insulation Resistance | - | - | 1 GOhms |