Overview
The BF909,215 is an N-channel dual-gate MOSFET manufactured by NXP Semiconductors. This device is specifically designed for use in RF applications, particularly in the VHF and UHF frequency ranges. It is known for its high forward transfer admittance, low noise figure, and superior cross-modulation performance during Automatic Gain Control (AGC). The BF909,215 is packaged in a SOT143B plastic, surface-mounted package, making it suitable for a variety of electronic systems requiring compact and reliable RF components.
Key Specifications
| Parameter | Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VDS (Drain-Source Voltage) | 7 | V | |||
| ID (Drain Current) | 40 | mA | |||
| Ptot (Total Power Dissipation) | 200 | mW | |||
| Tj (Operating Junction Temperature) | 150 | °C | |||
| yfs (Forward Transfer Admittance) | 36 | 43 | 50 | mS | |
| Cig1-s (Input Capacitance at Gate 1) | 3.6 | 4.3 | pF | ||
| Crs (Reverse Transfer Capacitance) | f = 1 MHz | 35 | 50 | fF | |
| Noise Figure | f = 800 MHz | 2 | 2.8 | dB |
Key Features
- N-Channel Dual Gate MOSFET: Designed for high performance in RF applications.
- High Forward Transfer Admittance: Ensures good cross-modulation performance during AGC.
- Low Noise Figure: Up to 2.8 dB at 800 MHz, making it suitable for low-noise amplifiers.
- Superior Cross-Modulation Performance: During AGC, ensuring stable and reliable operation.
- Compact Packaging: SOT143B package, ideal for surface-mounted applications.
- Wide Supply Voltage Range: Operates with supply voltages from 3 to 7 V.
Applications
- VHF and UHF Applications: Suitable for television tuners, professional communications equipment, and other RF systems.
- RF Amplifiers: Used in gain-controlled amplifiers up to 1 GHz.
- Electronic Devices: Found in various electronic devices such as computers, smartphones, televisions, and medical devices.
Q & A
- What is the BF909,215 MOSFET used for?
The BF909,215 is used in RF applications, particularly in VHF and UHF frequency ranges, such as television tuners and professional communications equipment.
- What is the package type of the BF909,215?
The BF909,215 is packaged in a SOT143B plastic, surface-mounted package.
- What is the maximum drain-source voltage for the BF909,215?
The maximum drain-source voltage is 7 V.
- What is the typical forward transfer admittance of the BF909,215?
The typical forward transfer admittance is 43 mS.
- What is the noise figure of the BF909,215 at 800 MHz?
The noise figure at 800 MHz is up to 2.8 dB.
- What is the operating junction temperature range for the BF909,215?
The operating junction temperature range is up to 150°C.
- Is the BF909,215 suitable for low-noise applications?
Yes, it is suitable for low-noise applications due to its low noise figure.
- What are the typical applications of the BF909,215?
Typical applications include VHF and UHF systems, television tuners, and professional communications equipment.
- How does the BF909,215 ensure good cross-modulation performance?
The BF909,215 ensures good cross-modulation performance during AGC due to its high forward transfer admittance and internal bias circuit.
- What is the maximum drain current for the BF909,215?
The maximum drain current is 40 mA.
