| PartNumber | B59870C0120A051 | B59870C0120A054 | B59870C0120A070 |
| Description | Thermistors - PTC 870A 120A 51 8X2.5 PTC Thermisto | Thermistors - PTC 870A 120A 54 8X2.5 PTC Thermisto | Thermistors - PTC Thru-hole Coated 110V Overcurrent |
| Manufacturer | EPCOS / TDK | EPCOS (TDK) | EPCOS |
| Product Category | PTC Thermistors | PTC Resettable Fuses | PTC Resettable Fuses |
| Packaging | Reel | Tape & Reel (TR) | Reel |
| Part Aliases | B59870C120A51 | - | - |
| Series | - | - | - |
| Package Case | - | Radial, Disc | - |
| Current Max | - | 1A | - |
| Current Hold Ih Max | - | 100mA | - |
| Voltage Max | - | 230V | - |
| Current Trip It | - | 200mA | - |
| R Min Max | - | 15.00 ~ 25.00 Ohm | - |
| Time to Trip | - | - | - |
| Type | - | - | PTC |
| Current Rating | - | - | 1 A |
| Termination Style | - | - | Radial |
| Operating Temperature Range | - | - | - 40 C to + 125 C |
| Tolerance | - | - | 25 % |
| Resistance | - | - | 25 Ohms |