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| Part Number | S4008FS21 | S4008FS31 |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Obsolete | Obsolete |
| Voltage - Off State | 400 V | 400 V |
| Voltage - Gate Trigger (Vgt) (Max) | 800 mV | 800 mV |
| Current - Gate Trigger (Igt) (Max) | 200 µA | 500 µA |
| Voltage - On State (Vtm) (Max) | 1.6 V | 1.6 V |
| Current - On State (It (AV)) (Max) | 5.1 A | 5.1 A |
| Current - On State (It (RMS)) (Max) | 8 A | 8 A |
| Current - Hold (Ih) (Max) | 6 mA | 8 mA |
| Current - Off State (Max) | 5 µA | 5 µA |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 83A, 100A | 83A, 100A |
| SCR Type | Sensitive Gate | Sensitive Gate |
| Operating Temperature | -40°C ~ 110°C | -40°C ~ 110°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-202 Long Tab | TO-202 Long Tab |
| Supplier Device Package | TO-202 | TO-202 |
