onsemi MBR1650

Overview

MBR1650 from Diodes Incorporated is a 16A, 50V Schottky barrier rectifier in TO-220AC package, featuring low forward voltage drop (0.63 V @ 16A, 25°C), high surge capability (150 A, 8.3 ms), and thermal resistance of 1.5°C/W. It is designed for low-voltage, high-frequency inverters, freewheeling diode applications, and polarity protection circuits in industrial power supplies.

For engineers reviewing the MBR1650 datasheet, MBR1650 pinout, MBR1650 application, or MBR1650 equivalent, key selection criteria include its 50 V reverse blocking rating, 16 A average output current at 125°C case temperature, 0.57 V forward drop at elevated temperature, 450 pF junction capacitance at 4 V reverse bias, and compatibility with standard TO-220 heatsinking mounts.

Technical Context

The MBR1650 employs a Schottky barrier chip with integrated guard ring die construction to enhance transient voltage immunity and reduce leakage under reverse bias. Its low VF and fast switching enable high-efficiency operation in DC-DC converters and OR-ing circuits where conduction loss minimization is critical.

Rated for continuous 16 A average forward current at TC = 125°C, it supports single-phase, half-wave 60 Hz rectification with resistive or inductive loads; capacitive loads require 20% derating. Thermal performance relies on proper heatsink mounting per JEDEC standards.

Key Specifications

Pinout & Package

Package: TO-220AC - 3-terminal molded plastic case (UL 94V-0), lead-free, RoHS-compliant, with bright tin-plated terminals solderable per MIL-STD-202 Method 208. Mounting tab is cathode-connected and electrically active.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTH05 and MBR1650CT, the MBR1650 offers lower thermal resistance (1.5 vs. 1.8°C/W) and non-isolated tab for simplified heatsinking, making it optimal for cost-sensitive, high-power freewheeling and OR-ing where tab grounding is permitted.

Availability

MBR1650 is available at Aetrix Electronics and suitable for industrial power supplies, motor control boards, and redundant DC input modules requiring stable component supply and long-lifecycle support.

Supply support for MBR1650 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 centers across Asia and manufacturing in Taiwan and China.

The MBR16xx series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical secondary-side rectification and transient-robust freewheeling in industrial and computing power systems.

FAQ

Is the MBR1650 suitable for surface-mount assembly?

No. The MBR1650 uses a through-hole TO-220AC package with leads intended for wave or hand soldering. It lacks SMD-compatible footprint or reflow profile specifications. For surface-mount alternatives, consider Diodes' APD1650Q or Vishay's SS16-E3/5AT, both in DO-214AC packages with comparable 50 V/16 A ratings.

What is the maximum allowable case temperature for continuous 16 A operation?

The datasheet specifies IO = 16 A only at TC = 125°C. Operation above this temperature violates the absolute maximum rating. Derating begins immediately above 125°C; at TC = 135°C, maximum sustainable current drops to approximately 14.2 A per Fig. 1's forward current derating curve.

Does the MBR1650 have a built-in thermal shutdown feature?

No. As a passive discrete diode, the MBR1650 has no internal thermal protection circuitry. Safe operation depends entirely on external thermal management-proper heatsinking, airflow, and PCB copper area-to ensure junction temperature remains ≤150°C under worst-case load and ambient conditions.

Can the MBR1650 replace a 1N5822 in an existing design?

Only with verification. The 1N5822 is rated 3 A / 40 V in DO-41; MBR1650 is 16 A / 50 V in TO-220AC. Direct substitution is mechanically and electrically incompatible. It may be used in redesigned layouts where higher current, lower VF, and heatsink integration are required-but not as a drop-in part.