NXP Semiconductors AFT27S012NT1

Overview

AFT27S012NT1 from NXP Semiconductors is an RF power LDMOS transistor designed for cellular base station amplifiers operating from 728 to 2700 MHz, delivering 1.26 W average output power at 28 Vdc with 20.9 dB power gain and –40.8 dBc ACPR in W-CDMA at 2170 MHz.

For engineers reviewing the AFT27S012NT1 datasheet, AFT27S012NT1 pinout, AFT27S012NT1 application, or AFT27S012NT1 equivalent, key selection criteria include its 22.8% drain efficiency at 2170 MHz, –12 dB input return loss, 3.4 °C/W junction-to-case thermal resistance, and Class C–optimized gate voltage range (–6.0 to +10 V).

Technical Context

This N-channel enhancement-mode lateral MOSFET uses internal RF feedback for broadband operation across 728–2700 MHz and supports digital predistortion (DPD) correction via stable large-signal linearity-evidenced by 0.20 dB gain flatness over 90 MHz bandwidth at 1.26 W avg. output.

It operates with a quiescent drain current of 90 mA at 28 Vdc, features a gate threshold voltage of 0.8–1.6 Vdc, and maintains AM/PM distortion below –13° across 2110–2200 MHz, enabling high-fidelity signal amplification in multi-carrier LTE and 5G NR infrastructure.

Key Specifications

Pinout & Package

Package: PLD-1.5W plastic surface-mount package with exposed source pad on underside for thermal management. Dimensions: 7.11 × 4.91 mm (L × W), 2.26 mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AFT27S010NT1 and MRF6P21190HR5, the AFT27S012NT1 uniquely balances broadband operation (728–2700 MHz), integrated RF feedback, and 1.26 W avg. output in a thermally optimized 7.11 × 4.91 mm package-making it optimal for space-constrained, digitally linearized 5G NR and LTE small-cell PAs.

Availability

AFT27S012NT1 is available at Aetrix Electronics and suitable for cellular base station transceivers, remote radio heads, active antenna units, and multi-band LTE infrastructure amplifiers requiring stable component supply and long-term production continuity.

Supply support for AFT27S012NT1 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 company specializing in secure connectivity solutions for automotive, industrial, and communications markets, with leadership in RF power technology.

The AFT27S012NT1 belongs to NXP's AIRFAST® RF Power LDMOS family, engineered specifically for energy-efficient, digitally linearized cellular infrastructure amplifiers operating across sub-6 GHz 4G/5G bands.

FAQ

What is the maximum continuous drain-source voltage rating for the AFT27S012NT1?

The AFT27S012NT1 has a maximum drain-source voltage rating of +65 Vdc and a minimum of –0.5 Vdc, as specified in Table 1 of the official NXP datasheet. This rating ensures safe operation under transient voltage conditions typical in RF power amplifier circuits, including load mismatch events. The device must not be operated beyond these limits to prevent irreversible breakdown or degradation of the LDMOS channel.

Does the AFT27S012NT1 require external matching components for 2100 MHz band operation?

Yes, the AFT27S012NT1 requires external input and output matching networks for optimal 2100 MHz band performance, as demonstrated in Figure 2 of the NXP datasheet using discrete capacitors and resistors. While the device incorporates internal RF feedback for broadband stability, application-specific impedance transformation remains necessary to achieve target gain, efficiency, and ACPR. Reference design values are provided for 2110–2200 MHz operation.

What is the gate threshold voltage range of the AFT27S012NT1 at 25°C?

The gate threshold voltage (V_GS(th)) of the AFT27S012NT1 is specified from 0.8 Vdc to 1.6 Vdc at V_DS = 10 Vdc and I_D = 15.4 µAdc, per Table 5 in the NXP datasheet. This range reflects process variation and supports robust biasing across production lots. For stable Class AB operation, the recommended gate quiescent voltage is 1.5–2.3 Vdc at 28 Vdc drain supply and 90 mA quiescent current.

How is thermal management implemented for the AFT27S012NT1 in production designs?

Thermal management for the AFT27S012NT1 relies on soldering the exposed source pad on the underside of the PLD-1.5W package directly to a thermally enhanced PCB ground plane with multiple thermal vias, as shown in Figure 3 of the NXP datasheet. With a junction-to-case thermal resistance of 3.4 °C/W, this configuration enables reliable operation at case temperatures up to +150°C. AN1907 provides reflow profile guidance for high-power plastic packages.

Is the AFT27S012NT1 compatible with lead-free reflow soldering processes?

Yes, the AFT27S012NT1 is qualified for lead-free reflow soldering per J-STD-020 Moisture Sensitivity Level 3, with a peak package temperature rating of 260°C. Its PLD-1.5W plastic package meets industry-standard reflow profiles, and NXP Application Note AN1907 details recommended solder paste selection, preheat ramp rates, and time-above-liquidus parameters to avoid delamination or thermal stress damage during assembly.