Diodes Incorporated RS2JA-13

Overview

RS2JA-13 from Diodes Incorporated is a 600V, 1.5A surface-mount fast recovery rectifier in SMA package with 150ns reverse recovery time, 1.3V forward voltage at 1.5A, and 50A non-repetitive surge rating-used in AC/DC input stage of offline switch-mode power supplies.

For engineers reviewing the RS2JA-13 datasheet, RS2JA-13 pinout, RS2JA-13 application, or RS2JA-13 equivalent, key selection criteria include peak repetitive reverse voltage (600V), thermal resistance (20K/W), junction-to-terminal cooling path, fast recovery performance under high-frequency switching, and UL 94V-0 flammability compliance for safety-critical power conversion designs.

Technical Context

This device employs glass-passivated die construction to ensure stable reverse leakage and robust surge tolerance. Its fast recovery time (150ns) is measured under standardized conditions: IF = 0.5A, IR = 1.0A, Irr = 0.25A, enabling efficient operation in 50–100kHz SMPS front-ends.

The SMA package provides defined thermal resistance (20K/W junction-to-terminal) when mounted on 5.0 mm² copper pads, supporting reliable power dissipation up to 1.5A average current at 120°C terminal temperature-critical for compact, convection-cooled adapters and industrial power modules.

Key Specifications

Pinout & Package

SMA package: molded plastic case with solder-plated terminals, cathode identified by band or notch, weight ≈ 0.065 g, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RS2JA-13, STTH1L06U offers faster recovery but sacrifices 33% current capacity and increases conduction loss; MUR160 trades UL compliance and surface-mount compatibility for marginally better speed in non-certified, low-volume builds.

Availability

RS2JA-13 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial SMPS front-ends, and LED driver bulk rectification requiring stable component supply and consistent thermal performance.

Supply support for RS2JA-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 US.

The RS2x series targets cost-sensitive, high-volume power conversion applications where fast recovery, surge robustness, and regulatory compliance are mandatory-especially in consumer and industrial off-line power supplies.

FAQ

What is the maximum allowable junction temperature for RS2JA-13?

The absolute maximum junction temperature is +150°C, as specified in the datasheet's Operating and Storage Temperature Range. Derating begins at terminal temperatures above 120°C, where average current must be reduced per Figure 1. Thermal design must ensure TJ remains below 150°C under worst-case ambient, power dissipation, and airflow conditions.

Can RS2JA-13 replace RS2J in existing designs?

Yes-RS2JA-13 is the AEC-Q200 stress-tested variant of RS2J, sharing identical electrical specs (600V VRRM, 1.5A IO, 150ns trr) and SMA package. The "A" suffix denotes automotive-grade qualification including extended temperature cycling, humidity testing, and mechanical shock validation-making it suitable for industrial applications demanding higher reliability.

Is the cathode marking visible on both sides of the SMA package?

No-the cathode is marked by a single band or notch on one side only, aligned with the anode/cathode orientation diagram in the DS15004 datasheet. Visual inspection must be performed from the top view (marked side); automated optical inspection (AOI) setups should reference the standardized orientation in Diodes' packaging drawings.

Does RS2JA-13 require derating for capacitive loads?

Yes-per the datasheet, average rectified current must be derated by 20% when used with capacitive-input filters, due to increased peak current stress and harmonic content. For example, at 120°C terminal temperature, IO drops from 1.5A to 1.2A under full-capacitance loading, affecting thermal margin and lifetime estimation.