Overview
The BFG520/XR,235 is a high-performance NPN silicon planar epitaxial transistor designed by NXP USA Inc. for applications in the RF frontend, particularly in the GHz frequency range. This transistor is encapsulated in a 4-pin, dual-emitter plastic SOT143R package, ensuring excellent reliability and performance in various high-frequency applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Collector Emitter Breakdown (Max) | 15 | V |
| Frequency - Transition | 9 | GHz |
| Noise Figure (dB Typ @ f) | 1.1 ~ 2.1 @ 900MHz | dB |
| Gain - Power - Max | 300 | mW |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 60 @ 20mA, 6V | |
| Current - Collector (Ic) (Max) | 70 | mA |
| Operating Temperature | 175 | °C (TJ) |
| Mounting Type | Surface Mount | |
| Package / Case | SOT143R |
Key Features
- High power gain
- Low noise figure
- High transition frequency of 9 GHz
- Gold metallization for excellent reliability
- Dual-emitter configuration in SOT143R package
Applications
The BFG520/XR,235 transistor 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/XR,235 transistor?
The maximum collector-emitter voltage is 15V. - What is the transition frequency of the BFG520/XR,235 transistor?
The transition frequency is 9 GHz. - What is the typical noise figure of the BFG520/XR,235 transistor at 900 MHz?
The typical noise figure is between 1.1 dB and 2.1 dB at 900 MHz. - What is the maximum power gain of the BFG520/XR,235 transistor?
The maximum power gain is 300 mW. - What is the minimum DC current gain (hFE) of the BFG520/XR,235 transistor?
The minimum DC current gain (hFE) is 60 at 20 mA and 6 V. - What is the maximum collector current of the BFG520/XR,235 transistor?
The maximum collector current is 70 mA. - What is the operating temperature range of the BFG520/XR,235 transistor?
The operating temperature range is up to 175°C (TJ). - What type of package does the BFG520/XR,235 transistor use?
The transistor is encapsulated in a 4-pin, dual-emitter plastic SOT143R package. - Is the BFG520/XR,235 transistor RoHS compliant?
Yes, the BFG520/XR,235 transistor is RoHS compliant. - What are some common applications of the BFG520/XR,235 transistor?
Common applications include analog and digital cellular telephones, cordless telephones, radar detectors, pagers, and satellite TV tuners.
