Overview
The BFU520X235 is an NPN RF transistor manufactured by NXP USA Inc. This transistor is designed for high-speed, low-noise applications, making it suitable for a variety of radio frequency (RF) uses. It is part of the BFU5 family of transistors, known for their performance in small signal to medium power applications up to 2 GHz.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Collector-Base Voltage (VCB) | Open Emitter | - | - | 24 | V |
| Collector-Emitter Voltage (VCE) | Open Base | - | - | 12 | V |
| Emitter-Base Voltage (VEB) | Open Collector | - | - | 2 | V |
| Collector Current (IC) | - | - | - | 30 | mA |
| Total Power Dissipation (Ptot) | Tsp ≤ 87°C | - | - | 450 | mW |
| DC Current Gain (hFE) | IC = 5 mA; VCE = 8 V | 60 | 95 | 200 | - |
| Transition Frequency (fT) | IC = 10 mA; VCE = 8 V; f = 900 MHz | - | 10 | - | GHz |
| Noise Figure (NFmin) | f = 900 MHz; VCE = 8 V | - | 0.65 | - | dB |
Key Features
- Low noise, high breakdown RF transistor
- AEC-Q101 qualified, suitable for automotive applications
- High transition frequency (fT) of up to 10.5 GHz
- Minimum noise figure (NFmin) of 0.65 dB at 900 MHz
- Maximum stable gain of 19 dB at 900 MHz
- High supply voltage and high breakdown voltage capabilities
Applications
- Broadband differential amplifiers up to 2 GHz
- Low noise amplifiers for ISM (Industrial, Scientific, and Medical) applications
- ISM band oscillators
- Applications requiring high supply voltages and high breakdown voltages
- Satellite TV tuners, cellular phones, cordless phones, and pagers
Q & A
- What is the BFU520X235 transistor used for? The BFU520X235 is used for high-speed, low-noise RF applications.
- What is the maximum collector current of the BFU520X235? The maximum collector current is 30 mA.
- What is the typical noise figure of the BFU520X235 at 900 MHz? The typical noise figure is 0.65 dB.
- What is the transition frequency of the BFU520X235? The transition frequency is up to 10.5 GHz.
- Is the BFU520X235 AEC-Q101 qualified? Yes, it is AEC-Q101 qualified.
- What are the typical applications of the BFU520X235? Typical applications include broadband differential amplifiers, low noise amplifiers for ISM applications, and ISM band oscillators.
- What is the maximum total power dissipation of the BFU520X235? The maximum total power dissipation is 450 mW.
- What is the DC current gain (hFE) of the BFU520X235? The DC current gain (hFE) is between 60 and 200 at IC = 5 mA and VCE = 8 V.
- What is the operating temperature range of the BFU520X235? The operating temperature range is from -40°C to 150°C.
- What package types are available for the BFU520X235? The transistor is available in a plastic, 4-pin dual-emitter SOT143B package.
