BFG540,215

Overview

The BFG540,215 is an NPN silicon planar epitaxial transistor designed for wideband applications in the GHz range. It features a transition frequency of 9 GHz and a maximum unilateral power gain of 18 dB at 900 MHz. The device supports a DC collector current of 120 mA and total power dissipation of 400 mW. Key electrical parameters include a collector-emitter voltage of 15 V, collector-base voltage of 20 V, and emitter-base voltage of 2.5 V. It exhibits a minimum noise figure of 1.3 dB at 900 MHz with 10 mA collector current. The component is housed in a surface-mount SOT-143R package.

Feature Summary

• High power gain suitable for RF amplification
• Low noise figure optimized for signal integrity
• High transition frequency enabling GHz-range operation
• Gold metallization ensuring excellent reliability

Applications

• Analog and digital cellular telephones
• Cordless telephones (CT1, CT2, DECT)
• Radar detectors
• Satellite TV tuners (SATV)
• MATV/CATV amplifiers and repeater amplifiers in fibre-optical systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm pin configuration and packaging details. The BFG540/XR variant utilizes reverse pinning compared to standard configurations. Ensure compatibility with the required SOT-143R footprint during design integration. Cross-reference the part number with official NXP Semiconductors databases to validate current production status and availability constraints before finalizing procurement plans.

Selection Notes

Select this component for designs requiring high-frequency performance up to 9 GHz with low noise characteristics. Consider the SOT-143R package dimensions and thermal resistance of 290 K/W for heat dissipation requirements. Evaluate the trade-off between noise figure and gain based on the operating collector current, typically ranging from 10 mA to 40 mA. Ensure the circuit design accommodates the specified limiting values for voltage and current to prevent device stress.

Part Context

The BFG540 series includes variants such as BFG540, BFG540/X, and BFG540/XR, all sharing similar electrical specifications but differing in pinout arrangements. The BFG540/XR specifically employs reverse pinning within the SOT-143R package. These transistors are manufactured using silicon planar epitaxial technology and are intended for wideband RF applications. The series is produced by NXP Semiconductors, formerly Philips Semiconductors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.