Diodes Incorporated ES3AB-13

Overview

ES3AB-13 from Diodes Incorporated is a 3.0A surface-mount super-fast rectifier in SMB package, rated for 100V peak repetitive reverse voltage (VRRM), with 25ns reverse recovery time (trr), 0.9V forward voltage at 3.0A, and 100A non-repetitive surge current - used in high-frequency AC/DC adapters and switch-mode power supplies.

For engineers reviewing the ES3AB-13 datasheet, ES3AB-13 pinout, ES3AB-13 application, or ES3AB-13 equivalent, key selection criteria include VRRM rating, trr performance under 3A conduction, thermal resistance (RJT = 15°C/W), RoHS-compliant lead-free plating, and SMB footprint compatibility with automated SMT assembly.

Technical Context

This discrete silicon rectifier uses glass-passivated die construction to achieve stable super-fast switching behavior. Its 25ns reverse recovery time enables efficient operation in 100–500kHz SMPS topologies, while low 0.9V VF at 3.0A reduces conduction losses in secondary-side rectification stages.

The device is rated for 3.0A average output current at 100°C terminal temperature and supports surge currents up to 100A (8.3ms half-sine), making it suitable for transient-heavy environments like offline power supplies with capacitive input filtering.

Key Specifications

Pinout & Package

SMB (Surface Mount Small Outline) package: molded plastic case, UL 94V-0 rated, cathode indicated by band or notch, compatible with standard SMT reflow profiles. Weight ≈ 0.093 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar super-fast rectifier applications.

Compared with ES3B-13 (SMC) and SS310H-TP (SMB), ES3AB-13 uniquely balances 25ns trr, 0.9V VF, and SMB footprint - enabling higher-frequency efficiency in space-constrained power stages where thermal resistance and layout density are critical.

Availability

ES3AB-13 is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, industrial SMPS outputs, and automotive infotainment power rails requiring stable component supply and RoHS-compliant manufacturing.

Supply support for ES3AB-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 and manufacturing operations across Asia and the Americas.

The ES3x series targets high-efficiency, high-reliability power conversion - specifically engineered for secondary-side rectification in compact, high-frequency switch-mode power supplies where thermal performance and fast recovery are essential.

FAQ

What is the maximum junction temperature for ES3AB-13?

The ES3AB-13 has an operating junction temperature range of –65°C to +150°C. Its thermal resistance (RJT) is 15°C/W, meaning junction temperature rise equals 15°C per watt dissipated above the terminal. At 3.0A and 0.9V VF, power dissipation is 2.7W, resulting in ~40.5°C rise above terminal temperature - well within safe limits if terminal is kept below 110°C.

Is ES3AB-13 compatible with lead-free reflow processes?

Yes - ES3AB-13 features matte tin lead-free plating compliant with J-STD-020C Level 1 moisture sensitivity and RoHS Directive 2011/65/EU (with Annex exemptions applied). It withstands peak reflow temperatures up to 260°C and is qualified for standard Pb-free soldering profiles including IPC-J-STD-020.

How does the 25ns reverse recovery time impact EMI performance?

The 25ns trr minimizes reverse recovery charge (Qrr), reducing high-frequency ringing and dv/dt-induced noise during turn-off. This lowers common-mode EMI in secondary-side rectification, easing compliance with CISPR-22 Class B limits - especially critical in compact, unshielded AC/DC adapters where layout parasitics dominate.

Can ES3AB-13 replace a standard FR304 in an existing design?

ES3AB-13 can replace FR304 only if the circuit operates ≤100V reverse bias and benefits from faster recovery. FR304 has 500ns trr and 400V VRRM - so ES3AB-13 is unsuitable for 400V applications but improves efficiency and thermal performance in ≤100V, high-frequency designs where its 25ns trr and 0.9V VF reduce losses.