Taiwan Semiconductor Corporation MBRF2590CT

Overview

MBRF2590CT from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in ITO-220AB package, rated for 25 A average forward current, 90 V repetitive peak reverse voltage (VRRM), and 200 A non-repetitive surge current (IFSM), used in high-efficiency DC/DC converters and industrial SMPS front-end rectification.

For engineers reviewing the MBRF2590CT datasheet, MBRF2590CT pinout, MBRF2590CT application, or MBRF2590CT equivalent, key selection criteria include forward voltage at 25 A and 125°C (0.88 V), junction-to-case thermal resistance (1 °C/W), reverse leakage at 90 V and 125°C (7.5 mA), and AEC-Q101 qualification eligibility via H-suffix variants.

Technical Context

This dual-common-cathode Schottky rectifier integrates two independent die in a single ITO-220AB thermally optimized package, enabling synchronous or interleaved rectification topologies. Its 1 °C/W R_θJC supports direct heatsink mounting without thermal interface material under moderate power dissipation.

The device operates across -55°C to +150°C junction temperature range with 10,000 V/µs dv/dt rating, and exhibits low stored charge (Q_rr not specified but implied by Schottky architecture) for reduced switching losses in high-frequency (>20 kHz) applications.

Key Specifications

Pinout & Package

ITO-220AB package features three terminals: Pin 1 (Anode 1), Pin 2 (Cathode common), Pin 3 (Anode 2). The cathode is electrically connected to the metal tab, which serves as the thermal and electrical reference point. Mounting torque must not exceed 0.56 N·m.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-25CPQ090PbF and MBR2590CT, the MBRF2590CT offers tighter high-temperature leakage control (7.5 mA @ 125°C) and documented halogen-free status-critical for automotive and green-certified industrial systems-while maintaining identical pinout and thermal performance.

Availability

MBRF2590CT is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, telecom rectifier modules, and automotive auxiliary power systems requiring stable component supply and long-term lifecycle support.

Supply support for MBRF2590CT 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The MBRF25xxCT series targets high-efficiency, high-reliability power conversion applications where low forward voltage, robust surge capability, and thermal performance are essential-especially in space-constrained, thermally demanding environments.

FAQ

What is the maximum junction temperature rating for MBRF2590CT?

The MBRF2590CT has a maximum junction temperature (T_J) rating of +150°C, with operational capability down to -55°C. This wide range supports deployment in under-hood automotive environments and industrial enclosures without active cooling. Thermal design must respect the 1 °C/W junction-to-case resistance and ensure case temperature remains within limits to avoid exceeding T_J = 150°C. Derating curves in the datasheet confirm 25 A operation is sustainable up to 100°C case temperature.

Is MBRF2590CT pin-compatible with other parts in the MBRF25xxCT family?

Yes, all MBRF25xxCT variants-including MBRF2535CT through MBRF25150CT-share identical ITO-220AB packaging, pinout (Anode1–Cathode–Anode2), and mechanical footprint. Voltage rating differences (35 V to 150 V) do not affect physical compatibility. However, forward voltage and leakage characteristics vary by VRRM grade, so electrical validation is required when substituting across voltage grades. The MBRF2590CT itself maintains consistent pin assignment across all production lots.

Does MBRF2590CT meet AEC-Q101 reliability standards?

The base MBRF2590CT is not AEC-Q101 qualified; however, the AEC-Q101-qualified version is designated MBRF2590CTH ('H' suffix). Both share identical electrical and thermal specifications, but the 'H' variant undergoes additional stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing per AEC-Q101 Rev D. For automotive applications, only MBRF2590CTH should be selected unless customer qualification permits use of standard-grade parts.

What is the forward voltage of MBRF2590CT at full load and elevated temperature?

The MBRF2590CT exhibits a maximum forward voltage (V_F) of 0.92 V at 25 A and 25°C, and 0.88 V at 25 A and 125°C. This negative temperature coefficient is characteristic of Schottky diodes and improves thermal stability in parallel configurations. The value is measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss behavior in real-world high-frequency SMPS operation where junction temperature stabilizes near 125°C.

How does the guard ring feature benefit MBRF2590CT in practical circuit design?

The integrated guard ring in MBRF2590CT enhances edge termination robustness, increasing resistance to localized avalanche breakdown during voltage transients such as load dump or inductive kickback. In practice, this allows designers to reduce or eliminate external RC snubber networks in 48 V or 72 V input stages, simplifying BOM and improving power density. It also contributes to the device's 10,000 V/µs dv/dt rating, enabling reliable operation in fast-switching topologies like phase-shifted full-bridge converters.