Littelfuse Inc. SCR S4008FS21 is a sensitive gate silicon controlled rectifier designed for general purpose switching applications. This through-hole component features a 400V repetitive peak off-state voltage (VDRM) and an 8A RMS on-state current (IT(RMS)). The sensitive gate characteristic is highlighted by a maximum gate trigger current (IGT) of 200 µA and a maximum gate trigger voltage (VGT) of 800 mV. It exhibits a maximum on-state voltage drop (VTM) of 1.6V at 8A. The device is rated for a maximum holding current (IH) of 6 mA and a low off-state leakage current of 5 µA. Non-repetitive surge current handling is 83A at 50Hz and 100A at 60Hz. Operating temperature range is -40°C to 110°C. The TO-202 package with a long tab is suitable for automated assembly and is supplied in bulk packaging. This component finds utility in power control circuits across various industrial sectors including motor control, lighting control, and power supplies.
Additional Information
Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: BulkDownload Free CAD Model:
Technical Details:
| Packaging | Bulk |
| Package / Case | TO-202 Long Tab |
| Mounting Type | Through Hole |
| SCR Type | Sensitive Gate |
| Operating Temperature | -40°C ~ 110°C |
| Current - Hold (Ih) (Max) | 6 mA |
| Current - Gate Trigger (Igt) (Max) | 200 µA |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 83A, 100A |
| Current - On State (It (AV)) (Max) | 5.1 A |
| Voltage - Gate Trigger (Vgt) (Max) | 800 mV |
| Voltage - On State (Vtm) (Max) | 1.6 V |
| Current - Off State (Max) | 5 µA |
| Supplier Device Package | TO-202 |
| Current - On State (It (RMS)) (Max) | 8 A |
| Voltage - Off State | 400 V |
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