NXP Semiconductors BLF6G27-75,112

Overview

BLF6G27-75 from NXP Semiconductors is a 75 W LDMOS power transistor designed for base station RF power amplification in the 2500–2700 MHz band. It delivers 9 W average output power, 17 dB power gain, and 23 % drain efficiency at 28 V supply and 600 mA quiescent drain current under single-carrier N-CDMA (IS-95) conditions. Its internally matched ceramic package enables direct integration into WiMAX and LTE-TDD infrastructure amplifiers.

For engineers reviewing the BLF6G27-75 datasheet, BLF6G27-75 pinout, BLF6G27-75 application, or BLF6G27-75 equivalent, key selection criteria include its 75 W peak output capability, −50 dBc ACPR at 885 kHz offset (30 kHz BW), ruggedness under 10:1 VSWR load mismatch, and thermal resistance of 0.85 K/W - all critical for high-reliability macrocell and small-cell PA designs.

Technical Context

The BLF6G27-75 operates as a class-AB RF power amplifier transistor with laterally diffused MOS structure optimized for broadband operation from 2500 MHz to 2700 MHz. Its gate-source threshold voltage (1.4–2.4 V) and forward transconductance (7 S typical) support stable biasing in linearized PA architectures using digital predistortion.

It features integrated ESD protection and is internally impedance-matched to 50 Ω source and load networks across its operating band. Thermal design is enabled by direct-flange mounting and a low junction-to-case thermal resistance of 0.85 K/W, allowing sustained CW and modulated signal operation at T_case = 80 °C with 60 W dissipation.

Key Specifications

Pinout & Package

BLF6G27-75 uses the flanged SOT502A ceramic package with two mounting holes and three terminals: drain (pin 1), gate (pin 2), and source (pin 3). The flange is electrically connected to the source terminal and serves as the primary thermal and RF ground path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power transistor applications.

Compared with BLF6G27-75, BLF6G27LS-75 offers identical RF performance in a more compact package but sacrifices 0.1 K/W thermal resistance, while AFM36H035N trades proven LDMOS ruggedness for GaN-level efficiency and bandwidth - making BLF6G27-75 optimal for cost-sensitive, thermally managed macrocell upgrades.

Availability

BLF6G27-75 is available at Aetrix Electronics and suitable for WiMAX base stations, LTE-TDD infrastructure, IS-95 cellular repeaters, and 2-carrier W-CDMA amplifiers requiring stable component supply across multi-year production cycles.

Supply support for BLF6G27-75 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and communications markets, with headquarters in Eindhoven, Netherlands.

The BLF6G27-75 belongs to NXP's high-power LDMOS RF transistor family engineered specifically for 2.5–2.7 GHz wireless infrastructure - emphasizing ruggedness, broadband linearity, and thermal reliability in macrocell and distributed antenna systems.

FAQ

What is the maximum drain-source voltage rating for BLF6G27-75?

The absolute maximum drain-source voltage (V_DS) for BLF6G27-75 is 65 V, as specified in Table 4 of the NXP datasheet. This rating ensures safe operation under transient voltage spikes common in RF PA circuits, though recommended operating V_DS remains at 28 V for optimal linearity and efficiency in base station applications.

Does BLF6G27-75 require external matching networks?

No, BLF6G27-75 is internally matched for 50 Ω source and load impedances across 2500–2700 MHz, as confirmed in Section 1.2 and Table 8 of the datasheet. External matching is only needed for fine-tuning specific PA architectures or extending bandwidth beyond the specified range.

How does BLF6G27-75 perform under load mismatch conditions?

BLF6G27-75 is rated for unconditional ruggedness under 10:1 VSWR load mismatch at all phase angles when operated at 28 V, 600 mA I_Dq, and 65 W CW output at 2500 MHz (Section 7.1). This makes it suitable for antenna-tuned base station deployments where impedance variations occur.

What is the thermal resistance from junction to case for BLF6G27-75?

The thermal resistance from junction to case (R_th(j-case)) for BLF6G27-75 is 0.85 K/W, measured at T_case = 80 °C and P_L = 60 W CW (Table 5). This value assumes proper soldering of the flange to a thermally robust PCB copper plane.

Is BLF6G27-75 RoHS compliant?

Yes, BLF6G27-75 complies with Directive 2002/95/EC (RoHS) as stated in Section 1.2 of the NXP datasheet. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above allowable thresholds.