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| PartNumber | X0203NN 5AA4 | X0203NN | X0203NN 5AA4A |
| Description | SCRs 1.25A SENSITIVE GATE SCRs | ||
| Manufacturer | STMicroelectronics | ST | - |
| Product Category | Thyristors - DIACs, SIDACsThyristors - SCRs | SCRs - Single | - |
| Series | X02 | - | - |
| Packaging | Tape & Reel (TR) | - | - |
| Unit Weight | 0.006632 oz | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package Case | TO-261-4, TO-261AA | - | - |
| Operating Temperature | -40°C ~ 125°C | - | - |
| Mounting Type | Surface Mount | - | - |
| Supplier Device Package | SOT-223 | - | - |
| Current Hold Ih Max | 5mA | - | - |
| Voltage Off State | 800V | - | - |
| Voltage Gate Trigger Vgt Max | 800mV | - | - |
| Current Gate Trigger Igt Max | 200μA | - | - |
| Voltage On State Vtm Max | 1.45V | - | - |
| Current On State It AV Max | 800mA | - | - |
| Current On State It RMS Max | 1.25A | - | - |
| Current Off State Max | 5μA | - | - |
| Current Non Rep# Surge 50 60Hz Itsm | 22.5A, 25A | - | - |
| SCR Type | Sensitive Gate | - | - |
| Maximum Operating Temperature | + 125 C | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Rated Repetitive Off State Voltage VDRM | 800 V | - | - |
| Holding Current Ih Max | 5 mA | - | - |
| Gate Trigger Voltage Vgt | 0.8 V | - | - |
| Gate Trigger Current Igt | 0.2 mA | - | - |
| Non Repetitive On State Current | 25 A | - | - |
| Off State Leakage Current VDRM IDRM | 0.005 mA | - | - |
| Maximum Gate Peak Inverse Voltage | 8 V | - | - |
| Vf Forward Voltage | 1.5 V | - | - |