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| PartNumber | KST4126MTF | KST4126 | KST4126MTF , MAX6421US22 |
| Description | Bipolar Transistors - BJT PNP Si Transistor Epitaxial | ||
| Manufacturer | ON Semiconductor | - | |
| Product Category | Bipolar Transistors - BJT | Transistors (BJT) - Single | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | - |
| Transistor Polarity | PNP | - | - |
| Configuration | Single | - | - |
| Collector Emitter Voltage VCEO Max | - 25 V | - | - |
| Collector Base Voltage VCBO | - 25 V | - | - |
| Emitter Base Voltage VEBO | - 4 V | - | - |
| Maximum DC Collector Current | 0.2 A | - | - |
| Gain Bandwidth Product fT | 250 MHz | - | - |
| Maximum Operating Temperature | + 150 C | - | - |
| DC Current Gain hFE Max | 360 | - | - |
| Height | 0.93 mm | - | - |
| Length | 2.9 mm | - | - |
| Packaging | Reel | Tape & Reel (TR) | - |
| Width | 1.3 mm | - | - |
| Brand | ON Semiconductor / Fairchild | - | - |
| Continuous Collector Current | - 0.2 A | - | - |
| DC Collector/Base Gain hfe Min | 120 | - | - |
| Pd Power Dissipation | 350 mW | - | - |
| Product Type | BJTs - Bipolar Transistors | - | - |
| Factory Pack Quantity | 3000 | - | - |
| Subcategory | Transistors | - | - |
| Unit Weight | 0.000282 oz | - | - |
| Series | - | - | - |
| Part Status | - | Obsolete | - |
| Transistor Type | - | PNP | - |
| Current Collector (Ic) (Max) | - | 200mA | - |
| Voltage Collector Emitter Breakdown (Max) | - | 25V | - |
| Vce Saturation (Max) @ Ib, Ic | - | 400mV @ 5mA, 50mA | - |
| Current Collector Cutoff (Max) | - | 50nA (ICBO) | - |
| DC Current Gain (hFE) (Min) @ Ic, Vce | - | 120 @ 2mA, 1V | - |
| Power Max | - | 350mW | - |
| Frequency Transition | - | 250MHz | - |
| Operating Temperature | - | - | - |
| Mounting Type | - | Surface Mount | - |
| Supplier Device Package | - | SOT-23-3 | - |
| Base Part Number | - | * | - |