Renesas 2SK2512-AZ

Overview

2SK2512-AZ from Renesas Electronics is an N-channel power MOSFET designed for high-current DC switching in industrial power supplies and motor control circuits. It delivers R_DS(on) = 15 mΩ at V_GS = 10 V / I_D = 23 A, supports ±45 A DC drain current, and features a built-in gate-source ESD protection diode. Its MP-45F (isolated TO-220) package enables robust thermal management in high-power linear and switching applications.

For engineers reviewing the 2SK2512-AZ datasheet, 2SK2512-AZ pinout, 2SK2512-AZ application, or 2SK2512-AZ equivalent, key selection criteria include its low R_DS(on) at 4 V gate drive (23 mΩ), 60 V V_DSS rating, 101 nC total gate charge, and safe operating area validated up to 10 ms pulse width at T_C = 25 °C.

Technical Context

This device operates as a unidirectional, enhancement-mode N-channel power switch with isolated heatsink capability due to its MP-45F package construction. Its gate threshold voltage (V_GS(off) = 1.0–2.0 V) ensures reliable turn-on with standard logic-level drivers, while the 2.0 W ambient-rated power dissipation mandates heatsinking for continuous operation above ~1.5 A.

The integrated gate-source protection diode provides basic ESD immunity but does not replace external transient suppression. Switching performance-td(on) = 45 ns, tr = 380 ns, td(off) = 320 ns, tf = 320 ns-is optimized for hard-switched topologies with 10 Ω gate resistance and 30 V bus voltage.

Key Specifications

Pinout & Package

2SK2512-AZ uses the MP-45F package - an isolated variant of TO-220 with electrically insulated tab, enabling direct mounting to heatsinks without insulating hardware. Dimensions: 15.0 × 12.0 × 3.2 mm (L × W × H), lead pitch 2.54 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IXTP45N06T and IRFZ44NPBF, the 2SK2512-AZ offers superior gate-drive compatibility at 4 V, integrated ESD protection, and electrical isolation-making it optimal for industrial designs prioritizing layout simplicity, reliability under transient stress, and compatibility with 3.3 V control logic.

Availability

2SK2512-AZ is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, uninterruptible power systems, and automotive auxiliary DC-DC converters requiring stable component supply and long-term manufacturability.

Supply support for 2SK2512-AZ 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 industrial, automotive, and infrastructure markets.

The 2SK2512-AZ belongs to Renesas' legacy industrial power MOSFET product line, engineered for ruggedized high-current switching in factory automation, power conversion, and motor control equipment operating within Standard quality grade requirements.

FAQ

What is the maximum continuous drain current rating for the 2SK2512-AZ?

The 2SK2512-AZ is rated for ±45 A DC drain current at case temperature T_C = 25 °C. This rating assumes adequate heatsinking; derating applies above 25 °C per the datasheet's PT vs. TC curve. At T_C = 100 °C, the usable DC current drops to approximately 18 A. The 2SK2512-AZ must be mounted on a heatsink with thermal resistance ≤1.2 °C/W to sustain 45 A continuously.

Does the 2SK2512-AZ have a built-in gate protection diode, and how does it affect circuit design?

Yes, the 2SK2512-AZ integrates a gate-to-source protection diode to suppress ESD events. However, this diode only handles low-energy discharges and does not replace external TVS or RC snubbers in high-noise industrial environments. For robustness in motor drive or relay-switching applications, designers should still add a 12 V Zener between gate and source. The 2SK2512-AZ's internal diode eliminates the need for discrete gate clamping in benign lab or office equipment settings.

Can the 2SK2512-AZ be driven directly by a 3.3 V microcontroller GPIO pin?

The 2SK2512-AZ has a gate threshold voltage V_GS(off) of 1.0–2.0 V and achieves R_DS(on) = 23 mΩ at V_GS = 4 V, making it partially compatible with 3.3 V logic. However, full enhancement (R_DS(on) = 15 mΩ) requires 10 V. Driving the 2SK2512-AZ directly from a 3.3 V GPIO will result in higher conduction loss and thermal stress. A gate driver IC or level shifter is recommended for production use of the 2SK2512-AZ in high-efficiency applications.

What is the thermal resistance from channel to case (R_th(ch-c)) for the 2SK2512-AZ?

The 2SK2512-AZ has a specified channel-to-case thermal resistance R_th(ch-c) of 3.57 °C/W. This value is measured under JEDEC-standard conditions with the device mounted on a large copper pad. Real-world PCB layout, solder quality, and heatsink interface material significantly impact actual thermal performance. To achieve the rated 45 A DC current, the total thermal path (including interface resistance) must maintain junction temperature below 150 °C - requiring careful thermal design around the 2SK2512-AZ's MP-45F package.

Is the 2SK2512-AZ suitable for automotive applications?

The 2SK2512-AZ is classified as a Standard quality grade device per Renesas documentation, intended for industrial, office, and consumer equipment - not automotive or safety-critical systems. It lacks AEC-Q101 qualification, extended temperature validation beyond –55 to +150 °C, or automotive-specific reliability testing. While it may function in non-safety 12 V auxiliary circuits, Renesas does not authorize or warrant the 2SK2512-AZ for automotive use. For vehicle applications, qualified alternatives like the RJK0451DPE must be selected instead of the 2SK2512-AZ.