| PartNumber | FMMT558QTA | FMMT555TC | FMMT551TA |
| Description | Bipolar Transistors - BJT 400V PNP High Volt 500mW -150mA | Bipolar Transistors - BJT PNP Medium Power | Bipolar Transistors - BJT PNP Medium Power |
| Manufacturer | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Product Category | Bipolar Transistors - BJT | Bipolar Transistors - BJT | Bipolar Transistors - BJT |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOT-23-3 | SOT-23-3 | SOT-23-3 |
| Transistor Polarity | PNP | PNP | PNP |
| Configuration | Single | Single | Single |
| Collector Emitter Voltage VCEO Max | - 400 V | - 150 V | - 60 V |
| Collector Base Voltage VCBO | - 400 V | - 160 V | - 80 V |
| Emitter Base Voltage VEBO | - 7 V | - 5 V | 5 V |
| Collector Emitter Saturation Voltage | - 200 mV | - 0.3 V | - 0.35 V |
| Maximum DC Collector Current | - 500 mA | 1 A | 1 A |
| Gain Bandwidth Product fT | 50 MHz | 100 MHz | 150 MHz |
| Minimum Operating Temperature | - 55 C | - 55 C | - 55 C |
| Maximum Operating Temperature | + 150 C | + 150 C | + 150 C |
| Series | FMMT558 | FMMT55 | FMMT55 |
| Packaging | Reel | Reel | Reel |
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Continuous Collector Current | - 150 mA | - 1 A | - 1 A |
| Pd Power Dissipation | 500 mW | 500 mW | 500 mW |
| Product Type | BJTs - Bipolar Transistors | BJTs - Bipolar Transistors | BJTs - Bipolar Transistors |
| Qualification | AEC-Q101 | - | - |
| Factory Pack Quantity | 3000 | 10000 | 3000 |
| Subcategory | Transistors | Transistors | Transistors |
| Unit Weight | 0.000282 oz | 0.000282 oz | 0.000282 oz |
| DC Current Gain hFE Max | - | 50 at 10 mA, 10 V | - |
| Height | - | 1.1 mm | 1.1 mm |
| Length | - | 3 mm | 3 mm |
| Width | - | 1.4 mm | 1.4 mm |
| DC Collector/Base Gain hfe Min | - | 50 at 10 mA, 10 V, 50 at 300 mA, 10 V | - |