Renesas N0301N-T1-AT

Overview

N0301N-T1-AT from Renesas Electronics is an N-channel MOSFET designed for low-voltage switching applications, featuring 4.0 V gate drive capability, R_DS(on) ≤ 130 mΩ at V_GS = 4.0 V / I_D = 2.25 A, ±4.5 A DC drain current rating, and SOT-23F package. It serves as a compact power switch in portable electronics such as battery-powered load control and USB power management circuits.

For engineers reviewing the N0301N-T1-AT datasheet, N0301N-T1-AT pinout, N0301N-T1-AT application, or N0301N-T1-AT equivalent, key selection criteria include low-threshold 4.0 V drive compatibility, built-in gate protection diode, thermal performance on FR-4 PCBs, and suitability for space-constrained DC-DC converter high-side or load-switch roles.

Technical Context

This discrete MOSFET operates as a single N-channel enhancement-mode silicon device with integrated gate-source ESD protection diode. Its channel temperature rating of 150°C and specified R_DS(on) values across V_GS = 4.0 V, 4.5 V, and 10 V confirm design intent for logic-level drive in battery-powered systems.

Switching performance is characterized by t_d(on) = 6 ns, t_r = 4 ns, t_d(off) = 23 ns, and t_f = 4 ns under V_DD = 15 V / I_D = 2.25 A / R_G = 10 Ω conditions, supported by Q_G = 10 nC and C_iss = 400 pF - indicating optimized gate charge for fast, efficient switching in portable power rails.

Key Specifications

Pinout & Package

SOT-23F package: surface-mount, 3-pin, lead-free (Pure Sn plating), tape-and-reel (3000 pcs/reel), marking "XU". Dimensions: 2.9 mm × 1.9 mm × 1.1 mm (max height).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.

Compared with AO3400 and DMN2004LK-7, the N0301N-T1-AT uniquely combines 4.0 V gate drive assurance, integrated gate protection, and 30 V rating in SOT-23F - making it optimal for robust, low-component-count load switching in 3.3 V–5 V portable systems where reliability and layout simplicity are critical.

Availability

N0301N-T1-AT is available at Aetrix Electronics and suitable for USB power delivery, battery protection, and DC-DC converter high-side switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for N0301N-T1-AT 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

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.

The N0301N-T1-AT belongs to Renesas' legacy logic-level MOSFET product line, engineered specifically for compact, low-voltage switching in portable electronics where gate drive simplicity and thermal efficiency are essential.

FAQ

What is the maximum continuous drain current for N0301N-T1-AT at 25°C ambient?

The N0301N-T1-AT supports ±4.5 A DC drain current (I_D(DC)) at T_A = 25°C when mounted on a 50 mm × 50 mm FR-4 board with full copper coverage. This rating assumes proper thermal design - derating applies above 25°C per the datasheet's PT vs. T_A curve. For sustained operation, ensure PCB copper area matches the test condition to avoid exceeding the 1.3 W power dissipation limit.

Does N0301N-T1-AT have built-in ESD protection, and what is its implementation?

Yes, the N0301N-T1-AT integrates a gate-source protection diode explicitly described in the datasheet's Equivalent Circuit and Absolute Maximum Ratings section. This diode safeguards against electrostatic discharge during handling and assembly but does not replace external transient suppression in high-noise or hot-plug environments. The datasheet notes that additional external protection is required if voltages beyond ±20 V may be applied.

Can N0301N-T1-AT be driven directly by a 3.3 V microcontroller GPIO?

Yes - the N0301N-T1-AT is explicitly characterized for 4.0 V gate drive and delivers R_DS(on) ≤ 130 mΩ at V_GS = 4.0 V / I_D = 2.25 A. While 3.3 V is below the nominal 4.0 V drive point, typical V_GS(off) is 1.0–2.5 V, so the device remains strongly enhanced at 3.3 V (R_DS(on) ≈ 180–220 mΩ). Performance is usable in non-critical, low-current applications, but 4.0 V+ drive is recommended for full specification compliance.

What is the thermal resistance characteristic of N0301N-T1-AT on a standard PCB?

The N0301N-T1-AT achieves a total power dissipation of 1.3 W when mounted on a 50 mm × 50 mm × 1.6 mm FR-4 board with 100% copper foil - corresponding to a practical θ_JA ≈ 115°C/W. Transient thermal resistance data shows r_th(ch-A) = 100°C/W at 100 μs pulse width, confirming suitability for pulsed loads. For continuous operation, PCB copper area must match the datasheet test condition to maintain safe channel temperature ≤150°C.

Is N0301N-T1-AT suitable for reverse polarity protection circuits?

Yes - the N0301N-T1-AT's integrated body diode (anode at source, cathode at drain) and low V_F(S-D) = 0.84 V at 4.5 A make it viable in reverse-polarity protection configurations when placed in the high-side path. In such use, the device conducts forward when polarity is correct and blocks reverse current via its V_DSS = 30 V rating. Ensure gate is tied to source (or actively controlled) to prevent unintended turn-on during fault conditions.