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| Part Number | 0438001.WR | 0438001.WRA |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Package/Case | ||
| Series | 438 | 438A |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active |
| Mounting Type | Surface Mount | Surface Mount |
| Fuse Type | Board Mount (Cartridge Style Excluded) | Board Mount (Cartridge Style Excluded) |
| Current Rating (Amps) | 1 A | 1 A |
| Voltage Rating - AC | 32 V | 32 V |
| Voltage Rating - DC | 63 V | 63 V |
| Response Time | Fast Blow | Fast Blow |
| Breaking Capacity @ Rated Voltage | 50A | 50A |
| Melting I²t | 0.0593 | 0.0593 |
| Approval Agency | CSA, UL | CSA, UR |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C |
| Color | - | - |
| Size / Dimension | 0.061" L x 0.033" W x 0.020" H (1.54mm x 0.85mm x 0.50mm) | 0.062" L x 0.033" W x 0.024" H (1.58mm x 0.85mm x 0.61mm) |
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