Diodes Incorporated RS2AA-13

Overview

RS2AA-13 from Diodes Incorporated is a 1.5A surface-mount fast recovery rectifier in SMA package, rated for 50V peak repetitive reverse voltage (VRRM), 1.3V forward voltage at 1.5A, and 150ns reverse recovery time - used in AC/DC input stage rectification for compact power adapters and LED drivers.

For engineers reviewing the RS2AA-13 datasheet, RS2AA-13 pinout, RS2AA-13 application, or RS2AA-13 equivalent, key selection criteria include VRRM margin for line surge, trr for high-frequency switching efficiency, thermal resistance (20 K/W) for PCB layout heat sinking, and UL 94V-0 flammability compliance for safety-critical designs.

Technical Context

This device employs glass-passivated die construction to ensure stable junction performance under thermal cycling and humidity stress. Its fast recovery (trr = 150 ns) enables use in 50–100 kHz SMPS front-end rectification without excessive switching loss.

Rated for 1.5A average output current at 120°C terminal temperature and 50A non-repetitive surge (8.3 ms half-sine), it supports transient-limited input stages in Class II isolated converters where inductive load derating is not required.

Key Specifications

Pinout & Package

SMA (DO-214AC) surface-mount package: cathode indicated by band on body; anode and cathode terminals only; no internal gate or control pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR150 and VS-1N4933TR, RS2AA-13 offers optimal balance of 1.5A current handling, 150ns trr, and surface-mount compatibility - making it preferred for new SMT-based 5–10W AC/DC designs where thermal and space constraints coexist.

Availability

RS2AA-13 is available at Aetrix Electronics and suitable for AC/DC wall adapters, LED driver input stages, and industrial sensor power supplies requiring stable component supply and consistent parametric performance across production lots.

Supply support for RS2AA-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, cost-optimized components for power management and signal integrity.

The RS2x/A series targets cost-sensitive, high-volume power conversion applications where fast recovery, robust surge capability, and UL-certified packaging are mandatory design requirements.

FAQ

What is the maximum allowable PCB copper pad size for thermal performance?

The datasheet specifies thermal resistance (RJT = 20 K/W) is measured with a 5.0 mm² copper pad, 0.013 mm thick. Increasing pad area beyond this yields diminishing returns; doubling pad size reduces RJT by only ~10%. For >1.2A continuous operation, add thermal vias to inner ground layers.

Can RS2AA-13 replace RS2A in existing designs?

Yes - RS2AA-13 is the tape-and-reel packaging variant of RS2A, sharing identical electrical specs, thermal characteristics, and mechanical dimensions. The "-13" suffix denotes 3000-piece reel packaging per EIA-481 standard; no circuit or layout changes are needed.

Is RS2AA-13 suitable for use with capacitive loads?

No - the datasheet explicitly states "for capacitive load, derate current by 20%". At full 1.5A rating, capacitive loading increases peak surge stress beyond the 50A IFSM limit. Use with resistive or inductive loads only unless surge limiting (e.g., NTC thermistor) is added.

Does RS2AA-13 meet lead-free and RoHS requirements?

Yes - Diodes Incorporated confirms RS2AA-13 is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and China RoHS II. The "-13" suffix indicates RoHS-compliant, halogen-free molding compound per IEC 61249-2-21.