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| PartNumber | KSP25BU | KSP25TA | KSP25 |
| Description | Darlington Transistors NPN Si Transistor Epitaxial Darlington | Darlington Transistors NPN Si Transistor Epitaxial Darlington | |
| Manufacturer | ON Semiconductor | ON Semiconductor | - |
| Product Category | Darlington Transistors | Darlington Transistors | - |
| RoHS | T | Y | - |
| Configuration | Single | Single | - |
| Transistor Polarity | NPN | NPN | - |
| Collector Emitter Voltage VCEO Max | 40 V | 40 V | - |
| Emitter Base Voltage VEBO | 10 V | 10 V | - |
| Maximum DC Collector Current | 0.5 A | 0.5 A | - |
| Maximum Collector Cut off Current | 0.1 uA | 0.1 uA | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-92 | TO-92 Kinked Lead | - |
| Maximum Operating Temperature | + 150 C | + 150 C | - |
| Packaging | Bulk | Ammo Pack | - |
| Height | 4.58 mm | 4.58 mm | - |
| Length | 4.58 mm | 4.58 mm | - |
| Width | 3.86 mm | 3.86 mm | - |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | - |
| DC Collector/Base Gain hfe Min | 10000 | 10000 | - |
| Product Type | Darlington Transistors | Darlington Transistors | - |
| Factory Pack Quantity | 1000 | 2000 | - |
| Subcategory | Transistors | Transistors | - |
| Unit Weight | 0.007090 oz | - | - |