NXP Semiconductors BLF7G10LS-250,112

Overview

BLF7G10LS-250 from NXP Semiconductors is a 250 W LDMOS RF power transistor designed for base station amplifiers operating in the 869–960 MHz band. It delivers 60 W average RF output power with 19.5 dB gain and 30.5% drain efficiency at 920–960 MHz under W-CDMA 2-carrier conditions (V_DS = 30 V, I_Dq = 1800 mA), and features integrated ESD protection, internal input/output matching, and ruggedness up to VSWR = 10:1.

For engineers reviewing the BLF7G10LS-250 datasheet, BLF7G10LS-250 pinout, BLF7G10LS-250 application, or BLF7G10LS-250 equivalent, key selection criteria include broadband operation across 869–960 MHz, thermal resistance of 0.38 K/W (junction-to-case), low memory effects for digital predistortion, and suitability for Doherty amplifier architectures requiring low output capacitance.

Technical Context

The BLF7G10LS-250 operates in common-source class-AB configuration with fixed gate bias (I_Dq = 1800 mA) and 30 V drain supply. Its LDMOS structure enables high ruggedness (survives VSWR = 10:1 at 920–960 MHz, 200 W CW) and stable thermal performance via low R_th(j-c) = 0.38 K/W.

Internally matched for 50 Ω systems, it exhibits Z_S ≈ 3.2 − j3.3 Ω and Z_L ≈ 1.0 − j1.6 Ω at 942 MHz, enabling simplified broadband PA design. Its low memory effects and −34 dBc ACPR support linearized W-CDMA multi-carrier operation without external harmonic tuning.

Key Specifications

Pinout & Package

BLF7G10LS-250 uses the SOT502B earless flanged ceramic package with two leads and thermally optimized metal flange (electrically connected to source). The flange provides low-inductance grounding and direct thermal path to heatsink.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BLF7G10LS-250, the BLF7G10L-250 offers identical RF performance but adds mechanical mounting flexibility, while the MRF6VP2600HR5 trades ease-of-use and ruggedness for higher-frequency capability and raw power-making BLF7G10LS-250 optimal for cost-sensitive, thermally constrained 3G macro base station upgrades.

Availability

BLF7G10LS-250 is available at Aetrix Electronics and suitable for W-CDMA base station amplifiers, Doherty RF power modules, and multi-carrier cellular transmitters requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for BLF7G10LS-250 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 specializing in secure connectivity solutions for automotive, industrial, and communications markets, with deep expertise in RF power technologies.

The BLF7G10LS-250 belongs to NXP's high-power LDMOS transistor family engineered specifically for energy-efficient, rugged, and broadband RF power amplification in cellular infrastructure equipment.

FAQ

What is the maximum continuous drain current rating for BLF7G10LS-250?

The BLF7G10LS-250 has no standalone maximum continuous drain current rating; its safe operating area is defined by limiting values including V_DS ≤ 65 V, V_GS ≤ +13 V, and T_j ≤ 200 °C. Under typical class-AB operation (V_DS = 30 V, I_Dq = 1800 mA), the device delivers 60 W average RF output power with 30.5% efficiency. Peak pulsed current exceeds 56 A per datasheet Table 6 (I_DSX).

Does BLF7G10LS-250 require external matching components?

No, BLF7G10LS-250 is internally matched for 50 Ω systems across 869–960 MHz, eliminating the need for external input/output matching networks in standard PA designs. However, external harmonic traps, bias chokes, and DC blocking capacitors remain necessary per the recommended test circuit in Figure 1 of the datasheet.

What is the thermal resistance from junction to case for BLF7G10LS-250?

The thermal resistance from junction to case (R_th(j-c)) for BLF7G10LS-250 is 0.38 K/W, measured at T_case = 80 °C, P_L = 60 W (CW), V_DS = 30 V, and I_Dq = 1800 mA. This value enables precise thermal modeling for heatsink sizing in macro base station power amplifier modules.

Is BLF7G10LS-250 suitable for Doherty amplifier topologies?

Yes, BLF7G10LS-250 is explicitly designed for Doherty applications, featuring lower output capacitance and low memory effects to improve peaking device synchronization and overall efficiency. Its Z_L = 1.0 − j1.6 Ω at 942 MHz simplifies combiner design and supports broadband operation across the 869–960 MHz band.

How does BLF7G10LS-250 differ from BLF7G10L-250?

BLF7G10LS-250 uses the SOT502B earless flanged ceramic package, while BLF7G10L-250 uses SOT502A with two mounting holes. Both share identical electrical specifications, thermal resistance (0.38 K/W), and RF performance. The "S" suffix denotes the earless variant optimized for surface-mount assembly and reduced mechanical footprint.