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| PartNumber | 5TT 1.25-R | 5TT 1-R | 5TT1 |
| Description | Cartridge Fuses | Cartridge Fuses Fuse | |
| Manufacturer | Bel | Bel Fuse Inc. | Bel Fuse Inc. |
| Product Category | Cartridge Fuses | IC Chips | Fuses |
| RoHS | Y | - | - |
| Series | 5TT | 5TT | 5TT |
| Product | Glass Fuse | - | - |
| Current Rating | 1.25 A | 1A | 1.5A |
| Fuse Type | Time Delay / Slow Blow | Cartridge, Glass | Cartridge, Glass |
| Fuse Size / Group | 5 mm x 20 mm | - | - |
| Voltage Rating AC | 250 VAC | 250V | 250V |
| Interrupt Rating | 100 A at 250 VAC | - | - |
| Mounting Style | Holder / Clip | - | - |
| Termination Style | Clip | - | - |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 125 C | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Resistance | 179 mOhms | - | - |
| Body Style | Cylindrical | - | - |
| Diameter | 5.1 mm | - | - |
| Indicator Style | Without Indicator | - | - |
| Length | 20 mm | - | - |
| Brand | Bel Fuse | - | - |
| Product Type | Glass Tube | - | - |
| Factory Pack Quantity | 1000 | - | - |
| Subcategory | Fuses | - | - |
| Part # Aliases | 0654R1250-31 | - | - |
| Unit Weight | 0.038801 oz | - | - |
| Color | - | - | - |
| Package Case | - | 5mm x 20mm | 5mm x 20mm |
| Operating Temperature | - | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | - | Holder | Holder |
| Size Dimension | - | 0.201" Dia x 0.787" L (5.10mm x 20.00mm) | 0.201" Dia x 0.787" L (5.10mm x 20.00mm) |
| Voltage Rating DC | - | - | - |
| Response Time | - | Slow | Slow |
| Approvals | - | CE, CSA, cULus, PSE | CE, CSA, PSE, UL |
| Breaking Capacity Rated Voltage | - | 100A | 100A |
| MeltingI2t | - | 8.63 |