Overview
The BFS520,135 is a high-frequency NPN bipolar junction transistor (BJT) manufactured by NXP USA Inc. This transistor is designed for RF applications and is packaged in the SC-70 (SOT-323) surface mount format. It is part of NXP's range of RF transistors, which are optimized for high-frequency performance. The BFS520,135 is lead-free and RoHS compliant, making it suitable for a wide range of modern electronic designs.
Key Specifications
| Part Number | BFS520,135 |
|---|---|
| Category | Transistors - Bipolar (BJT) - RF |
| Manufacturer | NXP USA Inc. |
| Description | RF TRANS NPN 15V 9GHZ SOT323-3 |
| Package | Cut Tape (CT) |
| Mounting Type | Surface Mount |
| Package / Case | SC-70, SOT-323 |
| Operating Temperature | 175°C (TJ) |
| Transistor Type | NPN |
| Current - Collector (Ic) (Max) | 70mA |
| Voltage - Collector Emitter Breakdown (Max) | 15V |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 60 @ 20mA, 6V |
| Frequency - Transition | 9GHz |
| Power - Max | 300mW |
| Noise Figure (dB Typ @ f) | 1.1dB ~ 2.1dB @ 900MHz |
Key Features
- High-frequency performance with a transition frequency of 9GHz, making it suitable for RF applications such as amplifiers, oscillators, and mixers.
- Low noise figure, ranging from 1.1dB to 2.1dB at 900MHz, which is crucial for high-sensitivity RF circuits.
- Surface mount package (SC-70, SOT-323) for compact and efficient board design.
- Lead-free and RoHS compliant, ensuring environmental compliance and reliability.
- Maximum collector current of 70mA and collector-emitter breakdown voltage of 15V, providing robust performance in various RF circuits.
Applications
The BFS520,135 is primarily used in high-frequency applications, including:
- RF amplifiers and pre-amplifiers in communication systems.
- Oscillators and mixers in RF front-end circuits.
- High-frequency signal processing and transmission systems.
- Wireless communication devices such as mobile phones, base stations, and other RF equipment.
Q & A
- What is the BFS520,135 transistor used for?
The BFS520,135 is used in high-frequency applications, including RF amplifiers, oscillators, mixers, and RF front-end circuits in communication systems.
- What package type does the BFS520,135 come in?
The BFS520,135 comes in the SC-70 (SOT-323) surface mount package.
- What is the maximum operating temperature of the BFS520,135?
The maximum operating temperature (TJ) of the BFS520,135 is 175°C.
- What is the maximum collector current of the BFS520,135?
The maximum collector current (Ic) of the BFS520,135 is 70mA.
- What is the transition frequency of the BFS520,135?
The transition frequency of the BFS520,135 is 9GHz.
- Is the BFS520,135 lead-free and RoHS compliant?
Yes, the BFS520,135 is lead-free and RoHS compliant.
- What is the noise figure of the BFS520,135 at 900MHz?
The noise figure of the BFS520,135 at 900MHz ranges from 1.1dB to 2.1dB.
- How does the BFS520,135 differ from standard BJTs?
The BFS520,135 is specifically optimized for high-frequency performance, featuring lower capacitance, faster transition times, and higher gain-bandwidth products compared to standard BJTs.
- What are some common applications of RF BJTs like the BFS520,135?
RF BJTs like the BFS520,135 are commonly used in RF amplifiers, oscillators, mixers, and RF front-end circuits in communication systems.
- Is the BFS520,135 still in production?
No, the BFS520,135 is no longer manufactured by NXP USA Inc..
