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| Part Number | S4040RQ2 | S4040RQ3 | S4040RQ |
|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | Discontinued at Digi-Key |
| Voltage - Off State | 400 V | 400 V | 400 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.5 V | 1.5 V | 1.5 V |
| Current - Gate Trigger (Igt) (Max) | 40 mA | 40 mA | 40 mA |
| Voltage - On State (Vtm) (Max) | 1.8 V | 1.8 V | 1.8 V |
| Current - On State (It (AV)) (Max) | 25 A | 25 A | 25 A |
| Current - On State (It (RMS)) (Max) | 40 A | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 60 mA | 60 mA | 60 mA |
| Current - Off State (Max) | 10 µA | 10 µA | 10 µA |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 430A, 520A | 430A, 520A | 430A, 520A |
| SCR Type | Standard Recovery | Standard Recovery | Standard Recovery |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 | TO-220-3 |
| Supplier Device Package | TO-220 Non-Isolated Tab | TO-220AB-R | TO-220 Non-Isolated Tab |
