Diodes Incorporated S2G-13-F

Overview

S2G-13-F from Diodes Incorporated is a glass passivated surface-mount silicon rectifier diode rated for 400 V peak repetitive reverse voltage, 1.5 A average forward current at 100°C terminal temperature, and 50 A non-repetitive surge current (8.3 ms half-sine). It features low 1.15 V forward voltage drop at 1.5 A and 5 µA max reverse leakage at 25°C, used in AC/DC input stage rectification for industrial power supplies and LED drivers.

For engineers reviewing the S2G-13-F datasheet, S2G-13-F pinout, S2G-13-F application, or S2G-13-F equivalent, key selection criteria include its SMB package thermal resistance (20 °C/W junction-to-terminal), 400 V blocking capability, 1.15 V VF consistency at rated current, and RoHS-compliant matte tin plating suitable for lead-free reflow.

Technical Context

This device operates as a single-phase, half-wave rectifier under resistive or inductive loads at 60 Hz. Its glass passivated die construction ensures stable reverse characteristics across -65°C to +150°C operating range and supports automated SMT assembly without solderability degradation.

Thermal performance is defined with a 5.0 mm² copper pad heat sink per JEDEC standards; forward current derates linearly above 25°C ambient, reaching 1.5 A only at 100°C terminal temperature. Reverse leakage remains ≤125 µA at 125°C and rated DC blocking voltage.

Key Specifications

Pinout & Package

Package: SMB (Surface Mount Body), molded plastic case compliant with UL 94V-0 flammability rating; polarity indicated by cathode band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MURS440T3G and VS-1N5408-M3/54, S2G-13-F delivers lower conduction loss at 50/60 Hz, full RoHS/Green compliance, and optimized thermal performance in SMB for automated SMT-making it preferred for cost-sensitive, thermally constrained industrial rectifiers.

Availability

S2G-13-F is available at Aetrix Electronics and suitable for AC/DC adapters, industrial LED drivers, UPS battery chargers, and motor control auxiliary supplies requiring stable component supply and long-lifecycle support.

Supply support for S2G-13-F 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 power management and signal integrity solutions for industrial, computing, and consumer markets.

The S2x series belongs to Diodes' general-purpose rectifier product line, designed specifically for cost-effective, thermally efficient AC/DC conversion in space-constrained surface-mount applications.

FAQ

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

The datasheet specifies thermal resistance (RθJT = 20 °C/W) is measured using a 5.0 mm² copper pad, 0.013 mm thick. Increasing pad area beyond this provides diminishing returns; minimum recommended is 4.5 mm² with 0.01 mm thickness to maintain specified derating curves.

Can S2G-13-F replace S2J-13-F in a 600 V design?

No-S2G-13-F has a 400 V VRRM rating versus 600 V for S2J-13-F. Substitution risks catastrophic failure under normal 600 V reverse stress. Only acceptable if system-level analysis confirms worst-case reverse voltage never exceeds 360 V with margin.

Is the cathode band visible under standard optical inspection?

Yes-the cathode band is a molded black stripe on the SMB body, ≥0.3 mm wide and positioned within 0.2 mm of the cathode end. It meets IPC-A-610 Class 2 visibility requirements and is detectable by AOI systems calibrated for contrast-based marking recognition.

Does S2G-13-F require derating for capacitive loads?

Yes-per datasheet note, average forward current must be derated by 20% when used with capacitive-input filters. At 100°C terminal temperature, usable I(AV) drops from 1.5 A to 1.2 A to prevent thermal runaway caused by high peak charging currents.