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| PartNumber | ZUMT491TA | ZUMT491TC | ZUMT491 |
| Description | Bipolar Transistors - BJT NPN Medium Power | Bipolar Transistors - BJT NPN Medium Power | |
| Manufacturer | Diodes Incorporated | Diodes Incorporated | - |
| Product Category | Bipolar Transistors - BJT | Bipolar Transistors - BJT | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOT-323-3 | SOT-323-3 | - |
| Transistor Polarity | NPN | NPN | - |
| Configuration | Single | Single | - |
| Collector Emitter Voltage VCEO Max | 60 V | 60 V | - |
| Collector Base Voltage VCBO | 80 V | 80 V | - |
| Emitter Base Voltage VEBO | 7 V | 5 V | - |
| Collector Emitter Saturation Voltage | 500 mV | - | - |
| Maximum DC Collector Current | 1 A | 1 A | - |
| Minimum Operating Temperature | - 55 C | - 55 C | - |
| Maximum Operating Temperature | + 150 C | + 150 C | - |
| Series | ZUMT491 | - | - |
| Height | 1 mm | 1 mm | - |
| Length | 2.2 mm | 2.2 mm | - |
| Packaging | Reel | Reel | - |
| Width | 1.26 mm | 1.26 mm | - |
| Brand | Diodes Incorporated | Diodes Incorporated | - |
| Pd Power Dissipation | 500 mW | 500 mW | - |
| Product Type | BJTs - Bipolar Transistors | BJTs - Bipolar Transistors | - |
| Factory Pack Quantity | 3000 | 3000 | - |
| Subcategory | Transistors | Transistors | - |
| Unit Weight | 0.000176 oz | 0.000176 oz | - |