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| PartNumber | LR4-190F | LR4-190 | LR4-190BF |
| Description | Resettable Fuses - PPTC LR4-190F | Resettable Fuses - PPTC 1.9A 15V 100A Imax | Resettable Fuses - PPTC 1.9A STRAP Polyswitch PTC RESET |
| Manufacturer | Littelfuse | - | - |
| Product Category | Resettable Fuses - PPTC | - | - |
| RoHS | Y | - | - |
| Series | LR4 | - | - |
| Mounting Style | Strap | - | - |
| Termination Style | Axial | - | - |
| Hold Current | 1.9 A | - | - |
| Maximum Voltage | 15 V | - | - |
| Trip Current | 3.9 A | - | - |
| Current Rating Max | 100 A | - | - |
| Resistance | 72 mOhms | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 125 C | - | - |
| Packaging | Bulk | - | - |
| Type | PolySwitch Resettable Devices | - | - |
| Brand | Littelfuse | - | - |
| Pd Power Dissipation | 800 mW | - | - |
| Product Type | Resettable Fuses - PPTC | - | - |
| Factory Pack Quantity | 2000 | - | - |
| Subcategory | PPTC Resettable Fuses | - | - |
| Tradename | PolySwitch | - | - |
| Part # Aliases | E24709-000 RF1538-000 | - | - |