Taiwan Semiconductor Corporation MBRF790

Overview

MBRF790 from Taiwan Semiconductor is a single-die Schottky barrier rectifier in ITO-220AC package, rated for 7.5 A average forward current, 90 V repetitive peak reverse voltage (V_RRM), and 150 A non-repetitive surge current (I_FSM). It operates up to 150°C junction temperature and delivers 0.92 V typical forward voltage at 7.5 A and 25°C - optimized for high-efficiency DC/DC converters and switching power supplies.

For engineers reviewing the MBRF790 datasheet, MBRF790 pinout, MBRF790 application, or MBRF790 equivalent, key selection criteria include its 90 V V_RRM, low 0.92 V V_F at rated current, 7 °C/W junction-to-case thermal resistance, AEC-Q101 qualification option (MBRF790H), and ITO-220AC mounting compatibility with standard heatsinks.

Technical Context

The MBRF790 uses a planar Schottky junction structure with integrated guard ring for over-voltage protection, enabling robust operation under transient conditions. Its 90 V V_RRM and 5 mA max reverse leakage at 125°C support stable performance in 48 V–72 V intermediate bus applications.

Thermally, it features a low R_θJC of 7 °C/W and is rated for 150°C maximum junction temperature, allowing sustained 7.5 A conduction with appropriate heatsinking. The device is designed for surface-mount-compatible through-hole assembly using matte tin-plated leads compliant with J-STD-002.

Key Specifications

Pinout & Package

Package: ITO-220AC - insulated thermoplastic outline with integral metal tab for heatsink attachment; matte tin-plated leads; UL 94V-0 molding compound; polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-75SQ030 and MBR790CT, the MBRF790 provides optimal balance of 90 V blocking, 0.92 V forward drop, and ITO-220AC thermal performance for single-output 48–72 V industrial and automotive power stages - without requiring PCB redesign or derating.

Availability

MBRF790 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and industrial adapters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle availability.

Supply support for MBRF790 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, specializing in power rectifiers, TVS devices, and MOSFETs since 1979.

The MBRF7xx family was developed for high-reliability industrial and automotive power conversion, emphasizing low V_F, robust surge handling, and AEC-Q101 qualification readiness across voltage grades.

FAQ

What is the maximum junction temperature rating for MBRF790?

The MBRF790 has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version K2105). This allows operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when paired with appropriate heatsinking. Thermal design must maintain T_J ≤ 150°C under worst-case load and ambient conditions to ensure reliability of the MBRF790.

Is MBRF790 pin-compatible with other parts in the MBRF7xx series?

Yes, all MBRF7xx parts including MBRF790 share identical ITO-220AC package dimensions, lead frame geometry, and pinout - Anode (Lead 1), Cathode (Lead 2), and metal tab (cathode-connected). This allows direct substitution within the same voltage grade group without PCB modification. However, forward voltage and reverse leakage vary by V_RRM rating, so electrical validation is required when swapping MBRF790 for MBRF750 or MBRF7150 in existing designs.

Does MBRF790 meet automotive qualification standards?

The base MBRF790 is not AEC-Q101 qualified, but the MBRF790H variant is explicitly listed as AEC-Q101 qualified in Taiwan Semiconductor's ordering information. The "H" suffix denotes full stress testing per AEC-Q101 Rev D, including HTGB, HTRB, and temperature cycling. For automotive applications, specify MBRF790H - the MBRF790 alone should be used only in industrial or consumer-grade systems.

What is the typical forward voltage of MBRF790 at elevated temperature?

Per the Electrical Specifications table (Version K2105), the MBRF790 exhibits 0.82 V typical forward voltage at 7.5 A and 125°C junction temperature. This positive temperature coefficient helps balance current sharing in parallel configurations and reduces thermal runaway risk. At 150°C, V_F is extrapolated to ~0.86 V based on published forward characteristics curves, remaining well below 1.0 V - critical for maintaining efficiency in thermally constrained layouts using the MBRF790.

How does the guard ring in MBRF790 improve reliability?

The guard ring in the MBRF790 is a diffused p-type region surrounding the Schottky junction edge, which redistributes electric field lines and suppresses premature avalanche breakdown at the die periphery. As confirmed in the Features section, this structure enhances over-voltage ruggedness - particularly during line transients or inductive switching events - extending operational life in SMPS and motor drive applications where the MBRF790 serves as a freewheeling or output rectifier.