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| PartNumber | BT138-800,127 | BT138-800/DG,127 | BT138-800 |
| Description | Triacs RAIL TRIAC | Triacs 4Q TRIAC | Triacs RAIL TRIAC |
| Manufacturer | WeEn Semiconductors | WeEn Semiconductors | - |
| Product Category | Triacs | Triacs | - |
| RoHS | Y | E | - |
| On State RMS Current It RMS | 12 A | 12 A | - |
| Non Repetitive On State Current | 105 A | 105 A | - |
| Rated Repetitive Off State Voltage VDRM | 800 V | 800 V | - |
| Off State Leakage Current @ VDRM IDRM | 100 uA | 0.1 mA | - |
| On State Voltage | 1.4 V | 1.4 V | - |
| Holding Current Ih Max | 30 mA | 30 mA | - |
| Gate Trigger Voltage Vgt | 700 mV | 0.7 V | - |
| Gate Trigger Current Igt | 22 mA | 22 mA | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-220-3 | TO-220AB-3 | - |
| Brand | WeEn Semiconductors | WeEn Semiconductors | - |
| Product Type | Triacs | Triacs | - |
| Factory Pack Quantity | 1000 | 1000 | - |
| Subcategory | Thyristors | Thyristors | - |
| Part # Aliases | 933389620127 BT138-800 | 934065576127 | - |
| Unit Weight | 0.211644 oz | 0.211644 oz | - |