Diodes Incorporated MBR6030PT

Overview

MBR6030PT from Diodes Incorporated is a 60A, 30V Schottky barrier rectifier in TO-3P package, featuring low forward voltage drop (0.62 V @ 30 A, 25°C), high surge capability (500 A, 8.3 ms), and thermal resistance of 1.0°C/W. It is designed for low-voltage, high-frequency inverters, freewheeling diode applications, and polarity protection in industrial power supplies.

For engineers reviewing the MBR6030PT datasheet, MBR6030PT pinout, MBR6030PT application, or MBR6030PT equivalent, key selection factors include its 60A average output current at 125°C case temperature, 30V peak repetitive reverse voltage, low VF performance across temperature, and TO-3P mechanical compatibility with heatsink mounting.

Technical Context

This discrete Schottky rectifier uses guard-ring die construction to enhance transient protection and reliability under repetitive surge stress. Its low VF and high IF(AV) rating enable efficient operation in high-current DC/DC and AC/DC secondary-side rectification where conduction loss minimization is critical.

The device operates over –55°C to +150°C junction temperature range and exhibits 650 pF typical junction capacitance at 1 MHz and 4 V reverse bias - a key parameter for high-frequency switching noise and EMI behavior in SMPS designs.

Key Specifications

Pinout & Package

Package: TO-3P - Insulated plastic case with three leads (anode, cathode, case tab), UL 94V-0 rated, lead-free and RoHS compliant. Mounting via case tab to heatsink ensures low thermal impedance path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-60CPQ030 and MBR6030CT, the MBR6030PT offers superior thermal performance (1.0°C/W) in TO-3P, enabling higher sustained current in space-constrained industrial enclosures without derating - a decisive advantage in thermally demanding 60A applications.

Availability

MBR6030PT is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, and renewable energy inverters requiring stable component supply despite its obsolete status - supported via legacy inventory and cross-qualified sourcing.

Supply support for MBR6030PT 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the US.

The MBR6030PT belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical secondary-side rectification and freewheeling in industrial and computing power systems.

FAQ

Is MBR6030PT still in active production?

No - Diodes Incorporated officially discontinued the MBR6030PT as of July 2015, marking it "OBSOLETE – PART DISCONTINUED" in DS30053 Rev. 5. Aetrix Electronics maintains limited legacy stock and supports replacement sourcing with verified cross-qualified alternatives meeting original electrical and thermal specs.

What is the correct mounting orientation and insulation requirement for TO-3P?

The TO-3P case tab is electrically connected to the cathode. When mounting to a conductive heatsink, an insulating washer (e.g., mica or silicone pad) and shoulder washer must be used to prevent shorting. Torque specification is 0.5–0.7 N·m; overtightening risks die fracture or solder joint cracking.

Can MBR6030PT replace a 40 V or 45 V Schottky in a 24 V system?

Only if the circuit's maximum transient reverse voltage remains ≤30 V. While 24 V nominal systems may experience 35–40 V transients (e.g., load dump), the MBR6030PT's 30 V VRRM provides no margin - use MBR6040PT (40 V) or MBR6045PT (45 V) instead to ensure long-term reliability under real-world conditions.

Why does the datasheet specify derating for capacitive loads?

Capacitive loads cause high inrush current at turn-on, exceeding the diode's IFSM rating if uncontrolled. The 20% current derating ensures the device survives repeated cold-start events without junction degradation - a requirement validated per JEDEC surge test methodology in the datasheet.