Diodes Incorporated ZXM64N03XTA

Overview

ZXM64N03XTA from Zetex Semiconductors is a 30V N-channel enhancement-mode MOSFET in SOIC-8 package, featuring R_DS(on) = 0.045 Ω at V_GS = 10 V and I_D = 3.7 A, 5.0 A continuous drain current at T_A = 25°C, and fast switching with t_d(on) = 4.2 ns - deployed in DC-DC converter power stages and low-voltage load switches.

For engineers reviewing the ZXM64N03XTA datasheet, ZXM64N03XTA pinout, ZXM64N03XTA application, or ZXM64N03XTA equivalent, key selection criteria include verified R_DS(on) at 4.5 V gate drive, body diode reverse recovery time (t_rr = 24.5 ns), thermal resistance (R_θJA = 70 °C/W on FR4), and SOIC-8 terminal layout compatibility with board-level thermal management.

Technical Context

This MOSFET employs a high-density planar structure optimized for low-voltage power management, delivering sub-50 mΩ on-resistance while maintaining gate charge (Q_g = 27 nC) and output capacitance (C_oss = 200 pF) suitable for 500 kHz–1 MHz synchronous buck converters.

Its 1.0 V gate threshold (V_GS(th)) enables direct interface with 1.8 V/3.3 V logic controllers, and the integrated body diode exhibits V_SD = 0.95 V at I_S = 3.7 A and t_rr = 24.5 ns under defined di/dt conditions - critical for freewheeling path efficiency in step-down regulators.

Key Specifications

Pinout & Package

SOIC-8 package (3.0 mm × 4.9 mm body, 0.65 mm lead pitch), surface-mount, gull-wing leads. Thermal pad not present; junction-to-ambient rating assumes 1 oz copper on 25 mm × 25 mm FR4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMN3025LSD-13 and SI2300DS-T1-GE3, ZXM64N03XTA offers balanced R_DS(on), Q_g, and thermal performance in standard SOIC-8 - eliminating need for thermal pad redesign while supporting higher current than SOT-23 alternatives.

Availability

ZXM64N03XTA is available at Aetrix Electronics and suitable for DC-DC converters, hot-swap load switches, and motor control circuits requiring stable component supply across industrial and embedded production programs.

Supply support for ZXM64N03XTA 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

Zetex Semiconductors plc was a UK-based analog and power semiconductor specialist, acquired by Diodes Incorporated in 2008; known for high-performance discrete devices targeting efficiency-critical power systems.

ZXM64N03XTA belongs to Zetex's ZXM series of logic-level N-channel MOSFETs, engineered specifically for low-voltage, high-efficiency power conversion where gate drive simplicity and thermal reliability are prioritized over ultra-low R_DS(on).

FAQ

What is the maximum safe operating junction temperature for ZXM64N03XTA?

The absolute maximum junction temperature is +150°C, and the device is rated for continuous operation across –55°C to +150°C. Derating begins at T_A > 25°C per the linear factor of 14.4 mW/°C for the 1.8 W P_D rating - ensuring safe operation up to 70°C ambient with standard SOIC-8 mounting.

Can ZXM64N03XTA be driven directly by a 3.3 V microcontroller GPIO?

Yes - its gate threshold voltage is 1.0 V (min), and R_DS(on) is specified at 0.060 Ω with V_GS = 4.5 V, making it fully enhancement-capable from 3.3 V logic. Gate charge of 27 nC allows clean switching at ≤1 MHz with typical 20 mA GPIO drive strength.

Does ZXM64N03XTA include an integrated body diode, and what are its key parameters?

Yes - it features a monolithic body diode with forward voltage V_SD = 0.95 V at I_S = 3.7 A and reverse recovery time t_rr = 24.5 ns at di/dt = 100 A/µs. These values are measured under pulsed conditions and support efficient freewheeling in synchronous buck and half-bridge topologies.

Is the SOIC-8 package of ZXM64N03XTA lead-free and RoHS-compliant?

Yes - Zetex confirmed RoHS compliance for the ZXM64N03X series per the October 2005 datasheet revision, with lead-free terminations and halogen-free molding compound. The part marking "ZXM4P03" and date code format align with Zetex's pre-acquisition RoHS implementation standards.