Diodes Incorporated RS2GA-13

Overview

RS2GA-13 from Diodes Incorporated is a 400 V peak repetitive reverse voltage, 1.5 A average rectified current, glass-passivated fast recovery surface-mount rectifier in SMA package with 150 ns reverse recovery time and 1.3 V forward voltage at 1.5 A, used in AC/DC input stage rectification for offline switch-mode power supplies.

For engineers reviewing the RS2GA-13 datasheet, RS2GA-13 pinout, RS2GA-13 application, or RS2GA-13 equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (20 K/W) under PCB copper pad heatsinking, trr consistency across temperature, and SMB vs. SMA footprint compatibility in high-density layouts.

Technical Context

This device operates as a single-phase, half-wave rectifier under 60 Hz resistive or inductive loads; for capacitive loads, output current must be derated by 20%. Its glass-passivated die construction ensures stable junction performance across -65°C to +150°C operating range.

Reverse recovery is characterized at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, yielding 150 ns trr - critical for minimizing switching losses in 50–100 kHz SMPS front-ends. Junction capacitance is 30 pF at 1.0 MHz and 4.0 V reverse bias.

Key Specifications

Pinout & Package

SMA package: molded plastic case with solder-plated terminals; cathode identified by band; 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 MUR140 and VS-1N5408-M3/54, RS2GA-13 uniquely balances 1.5 A current, 150 ns speed, and SMA surface-mount compatibility - making it optimal for modern compact, medium-frequency AC/DC converters where thermal and layout constraints dominate.

Availability

RS2GA-13 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial PLC power supplies, LED driver bulk rectification, and automotive aftermarket chargers requiring stable component supply and consistent parametric performance across production lots.

Supply support for RS2GA-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 RS2x series targets cost-sensitive, high-volume power conversion applications where reliability, thermal performance, and surface-mount compatibility are essential - especially in consumer, industrial, and lighting power supplies.

FAQ

What is the maximum allowable PCB copper pad area for thermal optimization of RS2GA-13?

The datasheet specifies thermal resistance RJT = 20 K/W when mounted on 5.0 mm² of 0.013 mm thick copper pad. Increasing pad area beyond this yields diminishing returns; doubling pad size reduces RJT by only ~1.5 K/W. For ambient >60°C, adding internal copper planes or thermal vias beneath the pad is more effective than lateral expansion.

Can RS2GA-13 replace RS2JA-13 in a 600 V design without modification?

No - RS2GA-13 has VRRM = 400 V, while RS2JA-13 is rated for 600 V. Substituting it in a 600 V design risks premature breakdown under line surges or reflected transients. Derating rules require ≥1.5× margin for industrial AC inputs; 400 V part cannot safely cover 600 V system requirements.

Is RS2GA-13 compliant with lead-free reflow profiles per J-STD-020?

Yes - its solder-plated terminals and UL 94V-0 molded plastic case are qualified for standard Pb-free reflow (peak 260°C, 60 sec max). The glass-passivated die structure remains stable through three reflow cycles, and no moisture sensitivity level (MSL) rating is required due to hermetic-like passivation.

How does capacitive load derating affect RS2GA-13's usable current in LED driver applications?

For capacitive-input filters, the datasheet mandates 20% IO derating - reducing usable current from 1.5 A to 1.2 A at TT = 120°C. This accounts for increased RMS current and peak diode stress caused by leading-edge inrush into bulk capacitors, which elevates junction temperature beyond resistive-load assumptions.