Diodes Incorporated B320-13

Overview

B320-13 from Diodes Incorporated is a 20 V peak repetitive reverse voltage, 3.0 A average rectified output current 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 datasheet, B320-13 pinout, B320-13 application, or B320-13 equivalent, key selection criteria include its 20 V V_RRM, 3.0 A I_O, 0.50 V V_F @ 3 A, 100 A non-repetitive surge rating, and SMC package thermal performance (R_θJT = 20 °C/W).

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 forward voltage drop and fast recovery (inherently <10 ns) minimize conduction loss and reverse recovery charge in high-frequency switching topologies.

Rated for continuous operation from –55 °C to +150 °C junction temperature, it supports automotive-grade reliability per AEC-Q200-equivalent qualification and features lead-free, halogen-free "Green" molding compound compliant with RoHS 3 and UL 94V-0 flammability rating.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), surface-mount, cathode-banded, molded plastic with matte tin-plated terminals. Dimensions: 5.59–6.22 mm (A) × 6.60–7.11 mm (B) × 2.75–3.18 mm (C); weight ≈ 0.21 g.

Key Features

Applications

Availability

B320-13 is available at Aetrix Electronics and suitable for power supply polarity protection, DC motor freewheeling, and industrial sensor power rail applications requiring stable component supply and long-term manufacturability.

Supply support for B320-13 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 North America.

The B320–B360 series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-sensitive commercial and industrial power conversion where low V_F, surge tolerance, and RoHS compliance are primary requirements.

FAQ

What is the maximum junction temperature rating for B320-13?

The B320-13 has a specified operating junction temperature range of –55 °C to +150 °C, validated per JEDEC standards and supported by its 20 °C/W junction-to-terminal thermal resistance when mounted on a 2 × 3 mm copper pad.

Is B320-13 suitable for automotive applications?

The standard B320-13 is qualified to commercial-grade reliability standards; however, Diodes offers an automotive-compliant variant (B320Q–B360Q) qualified to AEC-Q200 with extended temperature screening and enhanced process controls for vehicle use.

How does the SMC package compare thermally to SMA or SMB?

The SMC package provides lower thermal resistance than SMA (R_θJA ≈ 120 °C/W) and SMB (R_θJA ≈ 100 °C/W), with R_θJT = 20 °C/W and R_θJA = 90 °C/W, enabling higher continuous current handling on standard FR-4 PCBs.

What is the typical total capacitance at 4 V reverse bias?

At V_R = 4 V and f = 1 MHz, the typical total capacitance (C_T) of B320-13 is 200 pF, as measured and published in the DS30923 datasheet Figure 5, directly impacting high-frequency noise filtering performance.