Diodes Incorporated B290Q-13-F

Overview

B290Q-13-F from Diodes Incorporated is a 2.0A, 90V peak repetitive reverse voltage (V_RRM) Schottky barrier rectifier in SMB package, featuring 0.79V max forward voltage at 2.0A and 7µA max reverse leakage at 25°C. It delivers low-power-loss rectification for low-voltage DC/DC outputs, polarity protection circuits, and freewheeling paths in automotive-grade power supplies.

For engineers reviewing the B290Q-13-F datasheet, B290Q-13-F pinout, B290Q-13-F application, or B290Q-13-F equivalent, key selection criteria include its AEC-Q101 qualification, 50A non-repetitive surge rating, 15°C/W junction-to-terminal thermal resistance, and RoHS-compliant lead-free plating suitable for reflow up to +260°C/10s.

Technical Context

This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress edge breakdown under high dv/dt conditions. Its low VF and fast switching enable high-efficiency operation in 100kHz–1MHz DC/DC converters without reverse recovery losses.

Rated for continuous 2.0A average forward current at terminal temperature of +125°C, it supports derated operation up to +150°C storage and handles 50A single half-sine surge per JEDEC JESD201 Class 2A. Total capacitance is 75pF at 4V reverse bias and 1MHz.

Key Specifications

Pinout & Package

Package: SMB (Surface Mount Small Outline) - Molded plastic body, 3.30–3.94mm width, 5.00–5.59mm length, 2.00–2.50mm height, cathode band marking, 0.093g weight. UL 94V-0 rated, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB290-E3/52 and SS29, B290Q-13-F provides the lowest forward voltage and best thermal resistance among SMB 90V Schottkys, while being the only AEC-Q101-qualified option with ≤7µA leakage at 25°C-making it optimal for high-reliability, efficiency-sensitive 2A rectification.

Availability

B290Q-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial 48V DC/DC converters, and USB-C power delivery adapters requiring stable component supply across multi-year production cycles.

Supply support for B290Q-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The B270Q–B2100Q series belongs to Diodes' high-reliability Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low VF, surge robustness, and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum junction temperature for continuous operation?

The B290Q-13-F has an operating junction temperature range of –65°C to +150°C. Continuous operation at full 2.0A load requires maintaining terminal temperature ≤+125°C, per the derating curve in DS38620 Rev. 2–2. At +125°C terminal, junction temperature remains within safe limits assuming R_θJT = 15°C/W and no additional board-level thermal resistance.

Is B290Q-13-F suitable for reflow soldering with lead-free paste?

Yes. The device features matte tin lead-free plating and is rated for high-temperature soldering at +260°C for 10 seconds, fully compliant with IPC-J-STD-020 moisture sensitivity Level 1 and standard Pb-free reflow profiles. No pre-baking is required prior to assembly.

How does the guard ring construction improve reliability?

The guard ring die structure surrounds the active Schottky junction to distribute electric field gradients and suppress premature edge breakdown under high dv/dt or transient overvoltage. This extends operational life in automotive environments subject to load-dump pulses and improves consistency in production yield.

Can B290Q-13-F replace B280Q-13-F in existing designs?

Yes-B290Q-13-F is a direct upgrade from B280Q-13-F with identical SMB package, pinout, and thermal characteristics, but offers higher 90V V_RRM (vs. 80V), providing 12.5% greater reverse voltage margin in 48V systems while maintaining identical VF, IR, and surge ratings.