NXP Semiconductors A5G35S004NT6

Overview

A5G35S004NT6 from NXP Semiconductors is a discrete GaN-on-SiC RF power transistor designed for 5G massive MIMO active antenna systems in the 3300–4300 MHz band, delivering 24.5 dBm average output power at 3500 MHz with 19.4 dB power gain and 20.0% drain efficiency under W-CDMA modulation.

For engineers reviewing the A5G35S004NT6 datasheet, A5G35S004NT6 pinout, A5G35S004NT6 application, or A5G35S004NT6 equivalent, this page provides verified RF performance data, thermal limits, biasing sequence guidance, DFN package layout details, and validated alternatives for cellular infrastructure amplifier design.

Technical Context

This depletion-mode GaN HEMT operates at VDD = 48 Vdc with quiescent drain current IDQ = 10–12 mA and requires negative gate bias (VGS(Q) = –2.53 V typical) for stable Class AB operation. Its internally unmatched design enables broadband tuning across 3400–4300 MHz.

Thermal management relies on direct source-to-PCB conduction via exposed backside metal, with RθJC (IR) = 8.9 °C/W and maximum channel temperature limited to 225 °C. It withstands 55 Vdc drain voltage and exhibits wideband ruggedness over 400 MHz ISBW at 55 Vdc.

Key Specifications

Pinout & Package

Package: DFN 4.5 × 4 mm with exposed source pad on underside - optimized for RF grounding and thermal dissipation in high-power front-end modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with QPD1025 and CGHV1F006D, the A5G35S004NT6 uniquely balances n77/n78 band coverage, DFN 4.5 × 4 mm form factor, and 400 MHz instantaneous bandwidth ruggedness - making it the only option validated for 4100–4300 MHz massive MIMO with full W-CDMA ACPR compliance.

Availability

A5G35S004NT6 is available at Aetrix Electronics and suitable for 5G massive MIMO active antenna units, macrocell remote radio heads, and private wireless infrastructure requiring stable component supply, full traceability, and lifecycle continuity.

Supply support for A5G35S004NT6 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communications markets.

The Airfast RF Power product line delivers GaN transistors engineered specifically for cellular base station amplifiers, emphasizing broadband linearity, thermal robustness, and seamless integration into active antenna systems.

FAQ

What is the correct biasing sequence for the A5G35S004NT6?

The A5G35S004NT6 is a depletion-mode GaN transistor requiring strict bias sequencing: first apply V_GS = –5 V (pinch-off), then ramp V_DS to +48 Vdc, next adjust V_GS to –2.53 V to set I_DQ = 12 mA, and finally apply RF input. Reversing this order risks catastrophic failure. The A5G35S004NT6 datasheet specifies this sequence in Section "Correct biasing sequence for GaN depletion mode transistors".

Does the A5G35S004NT6 require external matching components?

Yes, the A5G35S004NT6 is an internally unmatched device - all RF input and output matching must be implemented externally using the reference circuit in the datasheet (Figure 3). Its high terminal impedances simplify broadband network design, but discrete capacitors (e.g., 10 pF ATC 600S100JT250XT) and microstrip lines are mandatory for 3300–4300 MHz operation. The A5G35S004NT6 does not integrate matching networks.

What is the thermal resistance and how should it be applied in layout?

The A5G35S004NT6 has R_θJC (IR) = 8.9 °C/W measured from active die surface to case, requiring direct thermal coupling of its exposed source pad to a solid copper pour or heatsink layer. Layout must follow Figure 6–9: use full-solder-mask opening on the backside pad, ≥8 thermal vias (0.3 mm diameter) connecting to inner ground planes, and avoid solder mask dams under the source area. This ensures the A5G35S004NT6 maintains T_C ≤ 113°C at rated P_out.

Is the A5G35S004NT6 suitable for 5G NR FR1 deployments beyond 3.8 GHz?

Yes - the A5G35S004NT6 is fully characterized up to 4300 MHz, with validated W-CDMA performance in Tables 1–3 including ACPR = –38.3 dBc at 4300 MHz and η_D = 26.5%. Its wideband ruggedness (400 MHz ISBW at 55 Vdc) and gain flatness (0.74 dB over 200 MHz) confirm suitability for n77 (3300–4200 MHz) and n78 (3300–3800 MHz) 5G NR deployments, including emerging 4.1–4.3 GHz allocations.

What ESD protection level does the A5G35S004NT6 have?

The A5G35S004NT6 meets Human Body Model (HBM) Class 1A (≥250 V) and Charge Device Model (CDM) Class C2A (≥125 V) per JS-001-2017 and JS-002-2014. This allows standard SMT assembly without special ESD flooring or ionizers, though handling with grounded wrist straps is still recommended. The A5G35S004NT6's ESD rating is documented in Table 9 of the official NXP datasheet Rev. 5.