Diodes Incorporated B290AE-13

Overview

B290AE-13 from Diodes Incorporated is a 90 V, 2.0 A high-voltage Schottky barrier rectifier in SMA package, optimized for low forward voltage drop (0.79 V @ 2.0 A, +25°C) and low reverse leakage (7 µA @ 90 V, +25°C), used as polarity protection and freewheeling diode in DC-DC converters and AC-DC front-ends.

For engineers reviewing the B290AE-13 datasheet, B290AE-13 pinout, B290AE-13 application, or B290AE-13 equivalent, key selection criteria include peak repetitive reverse voltage (90 V), average rectified current (2.0 A), thermal resistance junction-to-ambient (110 °C/W), junction capacitance (70 pF @ 4 V), and RoHS-compliant lead-free plating.

Technical Context

This Schottky rectifier uses guard ring die construction to enhance transient voltage immunity and supports automated surface-mount assembly. Its low VF enables high-efficiency operation in low-voltage-drop, high-frequency switching applications including flyback snubbers and synchronous rectifier auxiliary paths.

Designed for operation from –65°C to +150°C, it exhibits stable leakage performance up to 125°C (0.4 mA @ 90 V), with derated forward current above 25°C per Figure 4. Junction-to-case thermal resistance is 65 °C/W, enabling reliable power dissipation in constrained PCB layouts.

Key Specifications

Pinout & Package

SMA package: molded plastic case (UL 94V-0), cathode band marking, matte tin-plated terminals, moisture sensitivity level 1. Dimensions: A = 2.29–2.92 mm, B = 4.00–4.60 mm, C = 1.27–1.63 mm, E = 4.80–5.59 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB290-E3/54 and SS29, B290AE-13 delivers the lowest VF (0.79 V) in SMA form factor and tightest IR spec (7 µA), making it optimal for thermally constrained, high-efficiency 2 A rectification where leakage and conduction loss are co-optimized.

Availability

B290AE-13 is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, motor drive snubbers, and polarity protection circuits requiring stable component supply and RoHS-compliant sourcing.

Supply support for B290AE-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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The B290AE-13 belongs to Diodes' high-voltage Schottky rectifier product line, engineered for efficiency-critical power conversion where low VF, low IR, and robust transient immunity are mandatory in compact surface-mount packages.

FAQ

What is the maximum junction temperature and how is it limited in practice?

The B290AE-13 has an operating junction temperature range of –65°C to +150°C. In practice, Tj is limited by ambient temperature, PCB copper area, airflow, and power dissipation (Pd = VF × IF). With RθJA = 110 °C/W and 2.0 A at 0.79 V, Pd = 1.58 W; thus, TA must stay ≤ 62°C to keep Tj ≤ 150°C. Derating curves (Figure 4) mandate reduced current above 25°C.

Is B290AE-13 suitable for use in automotive applications?

B290AE-13 meets AEC-Q200 stress test requirements for passive components and operates across –65°C to +150°C, but Diodes Incorporated does not qualify it to AEC-Q101 for discrete semiconductors. It is used in non-safety-critical automotive subsystems (e.g., infotainment power rails) where customer qualification is performed; life support or ADAS use requires explicit approval.

How does the guard ring construction improve reliability?

The guard ring die structure surrounds the active Schottky junction with a doped region that redistributes electric field gradients during voltage transients, suppressing edge breakdown. This increases IFSM rating to 50 A (8.3 ms half-sine) and improves robustness against ESD (HBM > 8 kV) and load dump spikes without external clamps-verified per DS39289 testing.

Can B290AE-13 replace a 100 V rectifier like B2100AE-13 in the same design?

No-B290AE-13 has 90 V VRRM versus 100 V for B2100AE-13. Substituting it in a circuit exposed to >90 V reverse stress risks premature breakdown. The two share identical VF, IR, and package, but VRRM is not interchangeable; design review must confirm worst-case reverse voltage stays ≤90 V before substitution.