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| PartNumber | S4040R | S4040RQ | S4040RQ2 |
| Description | SCRs 40A 400V | SCRs SCR 400V 40A LOW TQ TO220 | SCRs 400V 40A SCR Low TQ TO220 |
| Manufacturer | Littelfuse | Littelfuse | Littelfuse Inc. |
| Product Category | SCRs | SCRs | Thyristors - DIACs, SIDACsThyristors - SCRs |
| RoHS | Y | Y | - |
| Series | Sxx40x | S4040xQx | - |
| Breakover Current IBO Max | 520 A | - | - |
| Rated Repetitive Off State Voltage VDRM | 400 V | 400 V | - |
| Off State Leakage Current @ VDRM IDRM | 10 uA | - | - |
| On State RMS Current It RMS | 40 A | 40 A | - |
| Vf Forward Voltage | 1.8 V | 1.8 V | - |
| Gate Trigger Voltage Vgt | 1.5 V | 1.5 V | - |
| Gate Trigger Current Igt | 40 mA | 40 mA | - |
| Holding Current Ih Max | 60 mA | 60 mA | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-220-2 | TO-220 | - |
| Packaging | Tube | Bulk | Bulk Alternate Packaging |
| Current Rating | 40 A | - | - |
| Height | 9.4 mm | - | - |
| Length | 10.67 mm | - | - |
| Type | SCRs | - | - |
| Width | 4.78 mm | - | - |
| Brand | Littelfuse | Littelfuse | - |
| Non Repetitive On State Current | 520 A | - | - |
| Product Type | SCRs | SCRs | - |
| Factory Pack Quantity | 500 | 500 | - |
| Subcategory | Thyristors | Thyristors | - |
| Tradename | Teccor | Teccor | - |
| Part # Aliases | S4040RTP | - | - |
| Unit Weight | 0.081130 oz | 0.081130 oz | - |
| Package Case | - | - | TO-220-3 |
| Operating Temperature | - | - | -40°C ~ 125°C |
| Mounting Type | - | - | Through Hole |
| Supplier Device Package | - | - | TO-220 Non-Isolated Tab |
| Current Hold Ih Max | - | - | 60mA |
| Voltage Off State | - | - | 400V |
| Voltage Gate Trigger Vgt Max | - | - | 1.5V |
| Current Gate Trigger Igt Max | - | - | 40mA |
| Voltage On State Vtm Max | - | - | 1.8V |
| Current On State It AV Max | - | - | 25A |
| Current On State It RMS Max | - | - | 40A |
| Current Off State Max | - | - | 10μA |
| Current Non Rep# Surge 50 60Hz Itsm | - | - | 430A, 520A |
| SCR Type | - | - | Standard Recovery |