Diodes Incorporated B320-13-F

Overview

B320-13-F from Diodes Incorporated is a 20 V, 3.0 A surface-mount Schottky barrier rectifier in SMC package, with 0.50 V max forward voltage at 3.0 A and 0.1 mA max reverse leakage at 20 V, designed for polarity protection and freewheeling in low-voltage DC/DC converters and power supply rails.

For engineers reviewing the B320-13-F datasheet, B320-13-F pinout, B320-13-F application, or B320-13-F equivalent, key selection criteria include its 20 V reverse voltage rating, low VF for reduced conduction loss, 100 A surge capability, RoHS-compliant lead-free plating, and JEDEC-qualified reliability for commercial and industrial power management designs.

Technical Context

This Schottky rectifier uses guard ring die construction to enhance transient immunity and suppress avalanche-induced failure during inductive switching events. Its low junction-to-terminal thermal resistance (20 °C/W) enables high-current operation on standard PCB copper pads without forced cooling.

The device operates across –55 °C to +150 °C junction temperature range and maintains stable leakage (<0.1 mA at 25 °C, <20 mA at 100 °C) under rated reverse bias, supporting robust performance in thermally demanding environments such as enclosed power modules and automotive body electronics.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), molded plastic with matte tin-plated terminals, cathode band marking, 0.21 g mass, UL 94V-0 rated compound, moisture sensitivity level 1.

Key Features

Applications

Availability

B320-13-F is available at Aetrix Electronics and suitable for polarity protection, freewheeling, low-voltage DC/DC rectification, and reverse voltage clamping requiring stable component supply and JEDEC-qualified commercial-grade reliability.

Supply support for B320-13-F 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, specializing in high-efficiency power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The B320–B360 series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-sensitive, high-volume commercial power applications where low VF, surge robustness, and RoHS compliance are primary design requirements.

FAQ

What is the maximum junction temperature for continuous operation of B320-13-F?

The B320-13-F has a specified operating junction temperature range of –55 °C to +150 °C. Continuous operation at +150 °C requires thermal design ensuring junction temperature does not exceed this limit-typically achieved using ≥2×3 mm copper pads and minimizing ambient rise via board layout.

Is B320-13-F suitable for automotive applications?

No-B320-13-F is qualified to JEDEC commercial standards, not AEC-Q200. For automotive use, Diodes offers the pin-compatible B320Q–B360Q series, which undergoes extended temperature cycling, vibration, and humidity testing per automotive reliability requirements.

How does the SMC package compare to SMA in thermal performance?

The SMC package (DO-214AB) provides lower thermal resistance than SMA (DO-214AC): RθJT is 20 °C/W for SMC versus ~35–40 °C/W for SMA. This allows B320-13-F to sustain higher continuous current on identical PCB copper area, making it preferable for space-constrained 3 A designs.

Can B320-13-F replace a 1N5822 in existing designs?

Yes-B320-13-F matches the 1N5822's 3 A IO and 20 V VRRM ratings, shares the same SMC footprint, and offers lower VF (0.50 V vs. 0.65 V typical). No layout change is needed, and efficiency improves by ~0.45 W at 3 A due to reduced conduction loss.