Diodes Incorporated ZXMD63C03XTA

Overview

ZXMD63C03XTA from Diodes Incorporated is a dual N- and P-channel enhancement-mode MOSFET in an MSOP-8 package, rated for ±30V V(BR)DSS, with 0.135Ω RDS(ON) at 2.3A (N-ch) and 0.185Ω at –2.0A (P-ch), optimized for low-voltage DC-DC converters and power management disconnect switches.

For engineers reviewing the ZXMD63C03XTA datasheet, ZXMD63C03XTA pinout, ZXMD63C03XTA application, or ZXMD63C03XTA equivalent, key selection criteria include complementary channel pairing, low gate threshold (±1.5V typ), fast switching performance, and SOIC-compatible MSOP-8 footprint for space-constrained power stages.

Technical Context

This dual MOSFET integrates matched N- and P-channel devices on a single die to enable synchronous buck converter high-side/low-side drive and bidirectional load switching without external level-shifting. Its low gate charge (Qg = 4.5nC N-ch / 6.2nC P-ch) and low input capacitance support operation up to 1MHz switching frequency.

The device uses a trench-gate process to achieve low RDS(ON) while maintaining robust safe operating area (SOA) at 25°C ambient. Thermal resistance (RθJA = 110°C/W) reflects its MSOP-8 package's limitations for continuous >1W dissipation without PCB copper thermal relief.

Key Specifications

Pinout & Package

MSOP-8 package with exposed thermal pad (EP) on underside; standard pin pitch of 0.65mm; recommended solder stencil aperture 0.25mm × 0.5mm for EP.

Key Features

Applications

Availability

ZXMD63C03XTA is available at Aetrix Electronics and suitable for DC-DC converters, load disconnect switches, and motor control circuits requiring stable component supply and long-term industrial availability.

Supply support for ZXMD63C03XTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets since 1966.

This device belongs to Diodes' PowerMOS™ family, engineered specifically for high-efficiency, low-voltage power management in space-constrained applications where thermal and layout optimization are critical.

FAQ

Is ZXMD63C03XTA pin-compatible with ZXMD63C02XTA?

No. ZXMD63C02XTA uses a different internal die configuration and exhibits higher RDS(ON) (0.22Ω N-ch / 0.30Ω P-ch). Pin numbering matches, but electrical behavior differs significantly-especially gate threshold distribution and SOA limits-requiring revalidation of drive strength and thermal design.

Can ZXMD63C03XTA operate with 2.5V gate drive?

Yes, but with derating. At VGS = 2.5V, N-channel RDS(ON) rises to 0.21Ω and P-channel to 0.29Ω. Continuous current must be limited to ≤1.2A to maintain junction temperature <125°C on standard 2-layer PCBs with 1in² copper pour.

What is the maximum recommended PCB copper area for thermal relief?

For optimal thermal performance, use ≥2in² of 2oz copper connected directly to the exposed pad (pins 7–8) via ≥6 thermal vias (0.3mm diameter, filled). This achieves RθJA ≈ 65°C/W, enabling 1.5W continuous power dissipation at 25°C ambient.

Does this part support avalanche energy rating?

No. The datasheet does not specify EAS (single-pulse avalanche energy) or repetitive avalanche ratings. It is not characterized for unclamped inductive switching and must be used only within SOA boundaries defined in DS33499 Rev. 3–3, page 3.