| Photo | Mfr. Part # | Availability | Quantity | Datasheet | RoHs | Series | Package/Case | Packaging | Product Status | Transistor Type | Voltage - Collector Emitter Breakdown (Max) | Frequency - Transition | Noise Figure (dB Typ @ f) | Gain | Power - Max | DC Current Gain (hFE) (Min) @ Ic, Vce | Current - Collector (Ic) (Max) | Operating Temperature | Grade | Qualification | Mounting Type | Supplier Device Package | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|  | MRF581GRF TRANS NPN 18V 5GHZ MICRO X Microsemi Corporation | 3,571 |  |   Datasheet |  | - | Micro-X ceramic (84C) | Bulk | Obsolete | NPN | 18V | 5GHz | 3dB ~ 3.5dB @ 500MHz | 13dB ~ 15.5dB | 1.25W | 50 @ 50mA, 5V | 200mA | 150°C (TJ) | - | - | Surface Mount | Micro-X ceramic (84C) | 
|  | MRF559GRF TRANS NPN 16V 870MHZ MICRO X Microsemi Corporation | 3,904 |  |   Datasheet |  | - | Micro-X ceramic (84C) | Bulk | Obsolete | NPN | 16V | 870MHz | - | 9.5dB | 2W | 30 @ 50mA, 10V | 150mA | - | - | - | Surface Mount | Micro-X ceramic (84C) | 
|   | MRF4427RF TRANS NPN 20V 8SO Microsemi Corporation | 5,505 |  |   Datasheet |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|   | MRF4427GRF TRANS NPN 20V 8SO Microsemi Corporation | 5,193 |  | - |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|   | MRF4427GR1RF TRANS NPN 20V 8SO Microsemi Corporation | 3,450 |  | - |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|   | MRF4427GR2RF TRANS NPN 20V 8SO Microsemi Corporation | 4,675 |  | - |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|   | MRF4427R1RF TRANS NPN 20V 8DBGA Microsemi Corporation | 4,022 |  |   Datasheet |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|   | MRF4427R2RF TRANS NPN 20V 8SO Microsemi Corporation | 3,086 |  |   Datasheet |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 20V | - | - | 20dB | 1.5W | 10 @ 10mA, 5V | 400mA | - | - | - | Surface Mount | 8-SOIC | 
|  | MRF581RF TRANS NPN 18V 5GHZ MICRO X Microsemi Corporation | 3,365 |  |   Datasheet |  | - | Micro-X ceramic (84C) | Bulk | Obsolete | NPN | 18V | 5GHz | 3dB ~ 3.5dB @ 500MHz | 13dB ~ 15.5dB | 1.25W | 50 @ 50mA, 5V | 200mA | 150°C (TJ) | - | - | Surface Mount | Micro-X ceramic (84C) | 
|   | MRF5812RF TRANS NPN 15V 5GHZ 8SOIC Microsemi Corporation | 4,566 |  |   Datasheet |  | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Obsolete | NPN | 15V | 5GHz | 2dB ~ 3dB @ 500MHz | 13dB ~ 15.5dB | 1.25W | 50 @ 50mA, 5V | 200mA | - | - | - | Surface Mount | 8-SOIC |