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| PartNumber | B57861S502A20 | B57861S502F45 | B57861S502F40 |
| Description | Thermistors - NTC 5k 3988 1% | Thermistors - NTC 5k 3988 1% | |
| Manufacturer | - | EPCOS (TDK) | EPCOS (TDK) |
| Product Category | - | Thermistors - NTC | Thermistors - NTC |
| Series | - | B57861S | B57861S |
| Type | - | NTC | NTC |
| Packaging | - | Bulk | Bulk |
| Termination Style | - | Radial | Radial |
| Operating Temperature Range | - | - 55 C to + 155 C | - 55 C to + 155 C |
| Length | - | 6.5 mm | 6.5 mm |
| Package Case | - | Bead | Bead |
| Operating Temperature | - | -55°C ~ 155°C | -55°C ~ 155°C |
| Mounting Type | - | Free Hanging | Free Hanging |
| Tolerance | - | 1 % | 1 % |
| Power Max | - | 60mW | 60mW |
| Diameter | - | 2.41 mm | 2.41 mm |
| Resistance Tolerance | - | ±1% | ±1% |
| Resistance in Ohms 25°C | - | 5k | 5k |
| B Value Tolerance | - | ±1% | ±1% |
| B0 50 | - | - | - |
| B25 50 | - | - | - |
| B25 75 | - | - | - |
| B25 85 | - | - | - |
| B25 100 | - | 3988K | 3988K |
| Length Lead Wire | - | - | 1.48" (37.50mm) |
| Resistance | - | 5 kOhms | 5 kOhms |
| Lead Diameter | - | 0.25 mm | 0.25 mm |
| Power Rating | - | 60 mW | 60 mW |
| Part # Aliases | - | B57861S0502F045 | B57861S0502F040 |
| B Parameter | - | - | 3988 K |