Diodes Incorporated S2GA-13

Overview

S2GA-13 from Diodes Incorporated is a glass-passivated surface-mount silicon rectifier diode in SMA package, rated for 400 V peak repetitive reverse voltage (VRRM), 1.5 A average forward current (I(AV)), and 50 A non-repetitive surge current (IFSM). It delivers low forward voltage drop (1.15 V at 1.5 A) and operates across –65°C to +150°C, suited for AC/DC input stage rectification in offline power supplies.

For engineers reviewing the S2GA-13 datasheet, S2GA-13 pinout, S2GA-13 application, or S2GA-13 equivalent, key selection criteria include its 400 V blocking capability, thermal resistance of 20 °C/W (junction-to-terminal), RoHS-compliant matte tin finish, and compatibility with automated SMT assembly on PCBs with 5.0 mm² copper pads.

Technical Context

This device is a single-phase, half-wave rectifier optimized for resistive or inductive loads at 60 Hz line frequency. Its glass-passivated die construction ensures stable reverse leakage (<5 µA at 25°C, <125 µA at 125°C) and robust surge immunity up to 50 A (8.3 ms half-sine).

Thermal performance is defined with junction-to-terminal resistance of 20 °C/W under standardized PCB mounting (5.0 mm² × 0.013 mm Cu), enabling reliable operation at 100°C terminal temperature with full 1.5 A DC output. Capacitance is low (20 pF typical), minimizing high-frequency switching noise in EMI-sensitive designs.

Key Specifications

Pinout & Package

S2GA-13 uses the SMA (DO-214AC) surface-mount package: molded plastic case (UL 94V-0), cathode band marking, and lead-free matte tin plating. Dimensions: A = 2.29–2.92 mm, B = 4.00–4.60 mm, C = 1.27–1.63 mm, E = 4.80–5.59 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR140 and 1N4007G, S2GA-13 uniquely balances low forward loss, compact SMA footprint, and industrial-grade thermal range-making it optimal for modern, space-constrained AC/DC converters where efficiency and manufacturability are critical.

Availability

S2GA-13 is available at Aetrix Electronics and suitable for AC/DC adapter input stages, industrial control power supplies, LED driver auxiliary rails, and appliance motor control boards requiring stable component supply and RoHS-compliant manufacturing.

Supply support for S2GA-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.

S2GA-13 belongs to the S2x/A family of glass-passivated rectifiers engineered for high-reliability, cost-effective AC line rectification in consumer, industrial, and computing power supplies.

FAQ

What is the maximum allowable PCB copper pad area for thermal derating of S2GA-13?

The datasheet specifies thermal resistance RJT = 20 °C/W using 5.0 mm² of 0.013 mm thick copper as the reference heatsink. Increasing pad area beyond this reduces thermal resistance incrementally, but no official derating curve is provided for larger pads. For designs exceeding 1.5 A average current, use multiple parallel devices or add thermal vias to inner layers.

Can S2GA-13 be used in full-wave bridge configurations?

Yes-S2GA-13 is commonly used as one quadrant in discrete full-wave bridge rectifiers. Its 400 V VRRM supports up to 280 V RMS input, and its 50 A IFSM handles typical bridge inrush. Ensure matching diodes are used for balanced current sharing, and observe polarity markings (cathode band) during placement.

Does S2GA-13 require derating for capacitive loads?

Yes-the datasheet explicitly states that for capacitive loads, the average forward current must be derated by 20%. At 100°C terminal temperature, this reduces usable I(AV) from 1.5 A to 1.2 A to prevent thermal runaway caused by high peak charging currents into bulk capacitors.

Is the "-13" suffix in S2GA-13 related to packaging or environmental compliance?

The "-13" suffix denotes tape-and-reel packaging: 5000 units per reel for the SMA package. It does not indicate RoHS status; RoHS compliance is inherent in the base part number per Diodes Incorporated's lead-free plating policy, with optional "-F" suffix reserved for explicit documentation in legacy ordering systems.