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| PartNumber | BFY42 | BFY420(ES)/ESA | BFY420 (P) |
| Description | RF Bipolar Transistors HiRel NPN Silicon RF Transisto | ||
| Manufacturer | - | - | Infineon Technologies |
| Product Category | - | - | RF Transistors (BJT) |
| Packaging | - | - | Bulk |
| Part Aliases | - | - | BFY420PNZ BFY420PZZZA1 SP000011414 |
| Mounting Style | - | - | SMD/SMT |
| Package Case | - | - | Micro-X |
| Technology | - | - | Si |
| Configuration | - | - | Single Dual Emitter |
| Transistor Type | - | - | Bipolar |
| Pd Power Dissipation | - | - | 160 mW |
| Maximum Operating Temperature | - | - | + 150 C |
| Minimum Operating Temperature | - | - | - 65 C |
| Operating Frequency | - | - | 22000 MHz |
| Collector Emitter Voltage VCEO Max | - | - | 4.5 V |
| Transistor Polarity | - | - | NPN |
| Emitter Base Voltage VEBO | - | - | 1.5 V |
| Maximum DC Collector Current | - | - | 0.035 A |
| Continuous Collector Current | - | - | 35 mA |
| DC Collector Base Gain hfe Min | - | - | 50 at 5 mA at 1 V |