Overview
The BFG520,235 is an NPN 9 GHz wideband transistor manufactured by NXP USA Inc. This transistor is designed for high-frequency applications, particularly in the RF frontend of various devices. It is encapsulated in a 4-pin, dual-emitter plastic SOT143B package, ensuring compact and reliable performance.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VCBO (Collector-Base Voltage) | Open Emitter | - | - | 20 | V |
| VCEO (Collector-Emitter Voltage) | Open Base | - | - | 15 | V |
| Ic (DC Collector Current) | - | - | - | 70 | mA |
| Ptot (Total Power Dissipation) | Up to Ts = 88 °C | - | - | 300 | mW |
| hFE (DC Current Gain) | IC = 20 mA; VCE = 6 V; Tj = 25 °C | 60 | 120 | 250 | - |
| fT (Transition Frequency) | IC = 20 mA; VCE = 6 V; f = 1 GHz; Tamb = 25 °C | - | - | 9 | GHz |
| Noise Figure (Typ @ f) | f = 900 MHz | - | 1.1 ~ 2.1 | - | dB |
| Operating Temperature (Tj) | - | - | - | 175 | °C |
| Package | - | - | - | SOT143B | - |
Key Features
- High power gain
- Low noise figure
- High transition frequency of up to 9 GHz
- Gold metallization for excellent reliability
- Compact 4-pin, dual-emitter plastic SOT143B package
Applications
The BFG520,235 is intended for various high-frequency applications, including:
- Analog and digital cellular telephones
- Cordless telephones (CT1, CT2, DECT, etc.)
- Radar detectors
- Pagers
- Satellite TV tuners (SATV)
- Repeater amplifiers in fibre-optic systems
Q & A
- What is the maximum collector-emitter voltage of the BFG520,235?
The maximum collector-emitter voltage (VCEO) is 15 V.
- What is the transition frequency of the BFG520,235?
The transition frequency (fT) is up to 9 GHz.
- What is the typical noise figure at 900 MHz?
The typical noise figure at 900 MHz is between 1.1 dB and 2.1 dB.
- What is the maximum DC collector current?
The maximum DC collector current (Ic) is 70 mA.
- What is the operating temperature range of the BFG520,235?
The operating temperature (Tj) is up to 175 °C.
- In what package is the BFG520,235 encapsulated?
The BFG520,235 is encapsulated in a 4-pin, dual-emitter plastic SOT143B package.
- What are some common applications of the BFG520,235?
Common applications include analog and digital cellular telephones, cordless telephones, radar detectors, pagers, satellite TV tuners, and repeater amplifiers in fibre-optic systems.
- Is the BFG520,235 RoHS compliant?
Yes, the BFG520,235 is RoHS compliant and lead-free.
- What is the maximum total power dissipation of the BFG520,235?
The maximum total power dissipation (Ptot) is 300 mW up to Ts = 88 °C.
- What is the DC current gain (hFE) of the BFG520,235?
The DC current gain (hFE) is between 60 and 250 at IC = 20 mA and VCE = 6 V.
