Diodes Incorporated B250AE-13

Overview

B250AE-13 from Diodes Incorporated is a 50 V, 2 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.65 V max forward voltage at 2 A and 0.10 mA max reverse leakage at 50 V/25°C. It serves as a low-loss power rectifier in DC-DC boost stages, reverse-polarity protection circuits, and flyback diode paths in industrial power supplies.

For engineers reviewing the B250AE-13 datasheet, B250AE-13 pinout, B250AE-13 application, or B250AE-13 equivalent, key selection criteria include forward voltage drop at full load, high-temperature reverse leakage stability, thermal resistance (95°C/W junction-to-ambient), RoHS-compliant matte tin terminations, and SMA package compatibility with automated SMT assembly.

Technical Context

This Schottky rectifier uses a planar epitaxial construction optimized for low VF and thermally stable IR. Its 50 V peak repetitive reverse voltage supports standard 24 V and 36 V input rails with margin, while the 2 A average output current rating targets mid-power SMPS outputs and auxiliary rail rectification.

The device exhibits 75 pF typical junction capacitance at 4 V reverse bias and 1 MHz, enabling fast switching in <100 kHz boost converters. Thermal performance is defined by 95°C/W RθJA on FR-4 (0.4" × 0.5", 2 oz Cu), requiring minimal copper area for thermal management in space-constrained designs.

Key Specifications

Pinout & Package

Package: SMA (DO-214AC), surface-mount plastic case with cathode band marking; dimensions: 2.29–2.92 mm (A) × 4.00–4.60 mm (B) × 1.27–1.63 mm (C); weight ≈ 0.063 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB250-E3/54 and SS25, B250AE-13 delivers the optimal balance of low VF (0.65 V), ultra-low IR (0.10 mA), and proven thermal stability up to +125°C junction - making it preferred for industrial power supplies requiring long-term reliability under thermal stress.

Availability

B250AE-13 is available at Aetrix Electronics and suitable for boost converters, reverse polarity protection circuits, recirculating diode paths, and blocking diode applications requiring stable component supply and consistent parametric performance across production batches.

Supply support for B250AE-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 B250AE-13 belongs to Diodes' Schottky rectifier product line, engineered specifically for high-efficiency, thermally robust rectification in space-constrained SMT power supplies and battery-powered systems.

FAQ

What is the maximum junction temperature for continuous operation?

The B250AE-13 has an operating junction temperature range of –55°C to +150°C. For continuous operation at 2 A average current, thermal design must ensure TJ does not exceed +150°C - achievable with ≤95°C/W RθJA on standard FR-4 and ambient ≤+85°C, per derating curve in Figure 4.

Is the B250AE-13 suitable for automotive applications?

The B250AE-13 is not AEC-Q101 qualified and lacks automotive-specific qualification testing. While its –55°C to +150°C operating range overlaps with automotive under-hood requirements, Diodes Incorporated does not endorse or guarantee its use in automotive safety-critical or mission-critical systems without additional customer validation.

How does the SMA package compare to SMB for this device?

The B250AE-13 uses the smaller SMA (DO-214AC) package (2.29–2.92 mm × 4.00–4.60 mm), while the B250BE-13 uses SMB (DO-214AA) with larger footprint (3.30–3.94 mm × 4.06–4.57 mm). SMA offers tighter board space usage and slightly higher RθJA (95 vs. 90°C/W), whereas SMB provides better thermal dissipation and mechanical robustness for high-vibration environments.

Does the B250AE-13 have a specified avalanche rating?

No - the B250AE-13 is not rated for repetitive avalanche energy. As a Schottky rectifier, it lacks controlled avalanche capability; transient overvoltage events exceeding 50 V must be clamped externally using TVS diodes or RC snubbers to prevent irreversible breakdown.