Taiwan Semiconductor Corporation MBRF20H150CT

Overview

MBRF20H150CT from Taiwan Semiconductor is a 20A, 150V dual-die Schottky barrier rectifier in ITO-220AB package, featuring 150A surge current capability, 0.97V max forward voltage at 20A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency output rectifier in DC-DC converters and SMPS.

For engineers reviewing the MBRF20H150CT datasheet, MBRF20H150CT pinout, MBRF20H150CT application, or MBRF20H150CT equivalent, key selection criteria include repetitive peak reverse voltage (150V), junction-to-case thermal resistance (3.5°C/W), forward voltage behavior across temperature, and ITO-220AB mechanical mounting requirements.

Technical Context

This dual-die Schottky rectifier integrates two independent diodes in a common-cathode configuration, enabling synchronous rectification or dual-output designs. Its guard ring structure provides overvoltage protection, and it sustains 150A non-repetitive surge current under 8.3ms half-sine conditions.

The device operates across –55°C to +175°C junction temperature range with 10,000 V/µs critical dv/dt rating. At 125°C and 20A, forward voltage remains ≤0.85V, supporting thermally demanding power stages without derating penalties typical of PN-junction rectifiers.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with internal isolation between leads and metal tab; matte tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound; 1.70g mass; polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBRF20H150CT, VS-20CPH15 offers marginally lower conduction loss but no automotive qualification, while MBR20150CT matches AEC-Q101 compliance but demands greater thermal headroom-making MBRF20H150CT optimal where qualification and thermal efficiency are jointly critical.

Availability

MBRF20H150CT is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and telecom power adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBRF20H150CT 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 automotive, industrial, and consumer markets since 1979.

The MBRF20H150CT belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability power conversion in harsh-environment applications including engine compartments and factory automation systems.

FAQ

What is the maximum junction temperature rating for MBRF20H150CT?

The MBRF20H150CT has a maximum junction temperature (T_J) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows sustained operation in high-ambient environments such as automotive under-hood applications and sealed industrial power supplies. The MBRF20H150CT maintains electrical performance within specification up to this limit when thermal design respects the 3.5°C/W junction-to-case resistance.

Is MBRF20H150CT pin-compatible with MBRF20H100CT or MBRF20H200CT?

Yes, MBRF20H150CT shares identical ITO-220AB package dimensions, pinout, and mechanical mounting specifications with MBRF20H100CT and MBRF20H200CT. All three variants use the same dual-anode/common-cathode terminal arrangement and marking layout. The MBRF20H150CT can be substituted on the same footprint without PCB revision, provided the 150V V_RRM meets system voltage margin requirements.

Does MBRF20H150CT require a heatsink in standard 20A continuous operation?

MBRF20H150CT does not require an external heatsink for 20A continuous operation at 25°C ambient if mounted directly to a sufficiently large metal chassis or heatsink surface. Its 3.5°C/W R_θJC means junction temperature rise is ~70°C above case temperature at full load. For enclosed or elevated ambient (>50°C) environments, a heatsink is recommended to maintain T_J ≤175°C. The MBRF20H150CT datasheet provides derating curves confirming this behavior.

What does the "H" suffix in MBRF20H150CT signify?

The "H" suffix in MBRF20H150CT indicates AEC-Q101 qualification per the Taiwan Semiconductor ordering information table. This certification confirms the device has passed stress tests for automotive-grade reliability-including temperature cycling, humidity bias, and mechanical shock-making it suitable for safety-critical and mission-relevant automotive subsystems. The MBRF20H150CT is not merely automotive-suitable; it is formally qualified to the AEC-Q101 standard.

How does the guard ring feature improve robustness in MBRF20H150CT?

The guard ring in MBRF20H150CT is a diffusion-based structural enhancement surrounding the active Schottky junction, designed to suppress edge breakdown under high electric field conditions. It increases the device's ability to withstand transient voltage spikes-such as those from inductive load switching or ESD events-without catastrophic failure. This feature is explicitly cited in the MBRF20H150CT datasheet under FEATURES and contributes directly to its 10,000 V/µs dv/dt rating and reliability in noisy power systems.