Taiwan Semiconductor Corporation 1N5402G A0G

Overview

1N5402G from Taiwan Semiconductor is a glass-passivated standard silicon rectifier diode in DO-201AD package, rated for 3 A average forward current, 200 V repetitive peak reverse voltage (V_RRM), and 125 A non-repetitive surge current, used in DC-DC converters and switching-mode power supplies.

For engineers reviewing the 1N5402G datasheet, 1N5402G pinout, 1N5402G application, or 1N5402G equivalent, key selection criteria include verified V_RRM = 200 V, forward voltage ≤1.0 V at 3 A, thermal resistance R_θJA = 45 °C/W, and DO-201AD mechanical compatibility with high-reliability industrial power designs.

Technical Context

This discrete rectifier operates as a single-die, unidirectional PN junction device with glass-passivated chip construction ensuring stable reverse leakage (<5 µA at 25°C) and robust surge tolerance. Its thermal design supports continuous operation up to T_J = 150°C with R_θJC = 15 °C/W enabling effective heatsinking in compact power stages.

The 1N5402G exhibits low forward conduction loss (V_F ≤1.0 V @ 3 A, 25°C) and moderate junction capacitance (C_J = 25 pF @ 4 V, 1 MHz), making it suitable for medium-frequency switching applications where efficiency and reverse recovery behavior are critical.

Key Specifications

Pinout & Package

Package: DO-201AD axial-leaded plastic case with cathode band marking; RoHS-compliant, halogen-free molding compound (UL 94V-0), pure tin-plated leads solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and 1N5402, the 1N5402G delivers optimal balance of ruggedness, low conduction loss, and regulatory compliance in cost-sensitive 50–100 kHz industrial power supplies-without requiring board redesign or thermal derating penalties.

Availability

1N5402G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose industrial power supplies requiring stable component supply and long-lifecycle support.

Supply support for 1N5402G 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and automotive markets since 1979.

The 1N5402G belongs to TSC's standard rectifier product line, engineered for high-reliability AC/DC conversion in cost-sensitive, thermally constrained power applications where long-term stability and regulatory compliance are mandatory.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the 1N5402G?

The 1N5402G has a V_RRM rating of 200 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version K2105). This value defines the highest reverse voltage the diode can block repeatedly without breakdown under normal operating conditions and is specific to the 1N5402G variant within the 1N5400G–1N5408G family.

Is the 1N5402G RoHS and halogen-free compliant?

Yes, the 1N5402G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The "G" suffix denotes green compound packaging, and the device uses pure tin-plated leads meeting J-STD-002 solderability standards-key requirements for modern industrial and automotive assembly processes.

What is the forward voltage (V_F) of the 1N5402G at rated current?

The 1N5402G exhibits a maximum forward voltage of 1.0 V at 3 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value is lower than the 1.1 V typical for 1N5400G/1N5401G variants, reflecting optimized doping and junction design for reduced conduction loss in the 200–1000 V subfamily.

Does the 1N5402G have AEC-Q101 qualification?

The base 1N5402G is not AEC-Q101 qualified; however, the datasheet confirms that an AEC-Q101 qualified version is available under the ordering code 1N5402GH (with "H" suffix). This variant undergoes additional stress testing for automotive applications, while the standard 1N5402G remains suitable for industrial and commercial power designs.

What package type does the 1N5402G use, and how is polarity marked?

The 1N5402G uses the DO-201AD axial-leaded plastic package, with polarity indicated by a visible cathode band on the body. The cathode lead is the banded end, and the anode is the opposite lead-critical for correct orientation in rectifier bridges and freewheeling paths. Mechanical dimensions and marking diagram are provided in the Package Outline Dimensions section of the datasheet.