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| Part Number | S4025R | S4055R | S5025R | S4025L |
|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Discontinued at Digi-Key | Discontinued at Digi-Key | Obsolete | Discontinued at Digi-Key |
| Voltage - Off State | 400 V | 400 V | 500 V | 400 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Current - Gate Trigger (Igt) (Max) | 35 mA | 40 mA | 35 mA | 35 mA |
| Voltage - On State (Vtm) (Max) | 1.6 V | 1.8 V | 1.6 V | 1.6 V |
| Current - On State (It (AV)) (Max) | 16 A | 35 A | 16 A | 16 A |
| Current - On State (It (RMS)) (Max) | 25 A | 55 A | 25 A | 25 A |
| Current - Hold (Ih) (Max) | 50 mA | 60 mA | 50 mA | 50 mA |
| Current - Off State (Max) | 10 µA | 10 µA | 10 µA | 10 µA |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 300A, 350A | 550A, 650A | 300A, 350A | 300A, 350A |
| SCR Type | Standard Recovery | Standard Recovery | Standard Recovery | Standard Recovery |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 | TO-220-3 | TO-220-3 Isolated Tab |
| Supplier Device Package | TO-220 Non-Isolated Tab | TO-220 Non-Isolated Tab | TO-220 Non-Isolated Tab | TO-220 Isolated Tab |
