STMicroelectronics A2U8M12W3-FC

Overview

A2U8M12W3-FC from STMicroelectronics is a silicon carbide (SiC)–based ACEPACK 2 power module implementing a 3-level neutral-point-clamped (NPC) topology, integrating two 750 V/180 A NH/NL SiC MOSFETs and two 1200 V/140 A BH/BL SiC MOSFETs, plus integrated DC-link capacitors (100 nF each), an NTC temperature sensor (B57451V5103G362), and press-fit terminals - designed for high-efficiency, high-power-density DC-DC converters in renewable energy and traction systems.

For engineers reviewing the A2U8M12W3-FC datasheet, A2U8M12W3-FC pinout, A2U8M12W3-FC application, or A2U8M12W3-FC equivalent, key selection considerations include its dual-voltage SiC switch pairing (750 V + 1200 V), 3 kVrms isolation rating, 10 nH loop inductance, integrated thermal sensing, and press-fit mechanical interface for high-reliability industrial power conversion.

Technical Context

This module implements a full 3-level NPC inverter stage using discrete SiC MOSFET dies arranged as high-side (BH/BL) and low-side (NH/NL) pairs per phase leg, with dedicated gate drive pins per switch to support independent control and minimize cross-talk. The internal DC-link capacitor pair (CGA9Q1C0G2J104J280KC) provides localized 630 V-rated energy storage between DC+ and NEUT, reducing external bus inductance and improving switching stability.

The integrated NTC (B57451V5103G362) is embedded near the die attach area and calibrated to ±2% resistance tolerance at 25 °C (10 kΩ) and ±4.75% at 100 °C (674.8 Ω), enabling real-time junction temperature estimation with B25/100 = 4000 K. Thermal resistance from junction to heatsink is 0.39 °C/W per switch under specified TIM conditions (120 μm, λ = 3 W·m⁻¹·°C⁻¹).

Key Specifications

Pinout & Package

ACEPACK 2 package: 48.0 mm × 56.7 mm × 12.25 mm (L×W×H), press-fit contact pins with 3.2 mm pitch, 60° insertion angle, and 0.4 mm plating thickness; features 3 kV_rms isolation, CTI = 200 V, and AIN DBC substrate for enhanced thermal transfer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-level SiC power module applications.

Compared with FS820R08A6 and IXYS1200N120T2, A2U8M12W3-FC delivers higher functional integration (capacitors + NTC + 3-level topology), lower system-level component count, and superior thermal monitoring fidelity - making it optimal for space-constrained, high-reliability DC-DC and inverter applications demanding minimal external support circuitry.

Availability

A2U8M12W3-FC is available at Aetrix Electronics and suitable for grid-tied solar inverters, onboard EV DC-DC converters, and industrial UPS systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for automotive-grade production.

Supply support for A2U8M12W3-FC 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

A2U8M12W3-FC belongs to ST's ACEPACK SiC power module family, engineered specifically for high-efficiency, high-power-density 3-level topologies in renewable energy, traction, and industrial power conversion - emphasizing integration, reliability, and thermal intelligence.

FAQ

What is the maximum recommended gate resistor value for A2U8M12W3-FC's BH/BL switches?

The datasheet specifies RG = 8.2 Ω for BH/BL switching characterization at V_GS = -5 to 18 V and I_D = 100 A. Using higher values increases switching time and conduction loss trade-off but reduces EMI; exceeding 15 Ω risks incomplete turn-on under high-temperature conditions due to increased gate charge time constant. ST recommends 6.8–10 Ω for balanced efficiency and robustness in 100–200 kHz DAB operation.

Can the integrated NTC be used for real-time junction temperature estimation?

Yes - the B57451V5103G362 NTC is thermally coupled to the SiC die via the DBC substrate and calibrated across −40 °C to 150 °C. With its 4000 K B25/100 value and ±2% R25 tolerance, it enables junction temperature estimation within ±1.8 °C accuracy when used with a 10-bit ADC and linearization lookup table per ST AN5027 guidelines.

How does the 10 nH stray inductance impact switching performance?

The 10 nH module loop inductance directly limits achievable di/dt: at 100 A/100 ns (1 kA/μs), it generates 10 V of parasitic voltage overshoot (V = L·di/dt). This value is 40% lower than typical discrete SiC half-bridge modules, enabling cleaner turn-off waveforms and reducing snubber losses by up to 25% in 3-level NPC operation at 150 kHz.

Are the press-fit pins compatible with standard PCB fabrication processes?

Yes - the ACEPACK 2 press-fit pins are designed for standard FR-4 PCBs with plated-through holes matching Figure 18 dimensions (e.g., 2.30 mm nominal pin diameter, 2.75 mm max hole diameter). No special plating or back-drilling is required; ST validates compatibility with IPC-6012 Class 2 and Class 3 manufacturing flows, including automated optical inspection and X-ray void detection.