Diodes Incorporated B350BE-13

Overview

B350BE-13 from Diodes Incorporated is a 50 V, 3 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.65 V max forward voltage at 3 A and 0.1 mA max reverse leakage at 50 V/25°C. It serves as a high-efficiency boost or blocking diode in DC-DC converters and power supplies operating up to +150°C ambient.

For engineers reviewing the B350BE-13 datasheet, B350BE-13 pinout, B350BE-13 application, or B350BE-13 equivalent, key selection criteria include low VF for thermal efficiency, stable IR at elevated temperature, SMB footprint compatibility, and RoHS/Green compliance for industrial and consumer power designs.

Technical Context

This Schottky rectifier uses a planar metal–semiconductor junction optimized for low conduction loss and minimal thermal runaway risk. Its 0.65 V VF max at 3 A and 0.1 mA IR max at 50 V/25°C reflect tight process control for consistent switching behavior in continuous conduction mode.

The device operates across –55°C to +150°C with R_θJA = 90°C/W (SMB) and R_θJC = 50°C/W, enabling reliable performance in thermally constrained PCB layouts without forced airflow or heatsinking.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), molded plastic case with matte tin–annealed copper leadframe; cathode indicated by band on body; weight ≈ 0.093 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS35-E3/57T and SB350, B350BE-13 offers the lowest IR at 25°C and SMB compatibility-ideal for space-constrained, low-leakage applications-while trading slight VF penalty for superior thermal reliability in ambient-limited environments.

Availability

B350BE-13 is available at Aetrix Electronics and suitable for DC-DC boost converters, battery backup systems, recirculating protection circuits, and AC-DC adapters requiring stable component supply and long-term manufacturability.

Supply support for B350BE-13 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, manufacturing, and sales operations across Asia, Europe, and the Americas.

B350BE-13 belongs to Diodes' Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in consumer, industrial, and computing power supplies.

FAQ

What is the maximum junction temperature for B350BE-13?

The absolute maximum junction temperature is +150°C, with continuous operation supported across –55°C to +150°C ambient. Derating begins above +25°C per Figure 4: at +100°C ambient, IO reduces to approximately 1.5 A on standard FR-4 with 0.2"×0.25" copper pad.

Is B350BE-13 suitable for automotive applications?

B350BE-13 meets AEC-Q101 stress test requirements for discrete semiconductors and is rated for –55°C to +150°C operation. However, it is not qualified to full AEC-Q100 for integrated circuits; use requires system-level validation per vehicle environmental and reliability standards.

How does the SMB package compare to SMC for thermal performance?

The SMB package has RθJA = 90°C/W versus SMC's 70°C/W due to larger copper area and thermal mass. At 3 A load, SMB junction rise is ~270°C above ambient (exceeding limit), so derating or enhanced layout (e.g., thermal vias, 2-oz copper) is required-SMC is preferred for sustained 3 A operation.

Can B350BE-13 replace a standard PN rectifier like 1N5822?

Yes-B350BE-13 replaces 1N5822 (3 A, 40 V) with higher VRRM (50 V), lower VF (0.65 V vs. 0.9 V), and faster switching. No circuit changes needed beyond verifying reverse voltage margin and thermal layout, as SMB matches DO-214AA footprint.