| Part Number | MRF581 | MRF586 | 
|---|---|---|
| Manufacturer | Microsemi Corporation | Microsemi Corporation | 
| Category | Transistors - Bipolar (BJT) - RF | Transistors - Bipolar (BJT) - RF | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Transistor Type | NPN | NPN | 
| Voltage - Collector Emitter Breakdown (Max) | 18V | 17V | 
| Frequency - Transition | 5GHz | 3GHz | 
| Noise Figure (dB Typ @ f) | 3dB ~ 3.5dB @ 500MHz | - | 
| Gain | 13dB ~ 15.5dB | 13.5dB | 
| Power - Max | 1.25W | 1W | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 50 @ 50mA, 5V | 40 @ 50mA, 5V | 
| Current - Collector (Ic) (Max) | 200mA | 200mA | 
| Operating Temperature | 150°C (TJ) | - | 
| Mounting Type | Surface Mount | Through Hole | 
| Package / Case | Micro-X ceramic (84C) | TO-205AD, TO-39-3 Metal Can | 
| Supplier Device Package | Micro-X ceramic (84C) | TO-39 |