Good-Ark Semiconductor 2W04G

Overview

2W04G from Diodes Incorporated is a 2.0A glass passivated bridge rectifier with 400V peak repetitive reverse voltage (VRRM), 1.1V forward voltage drop at 2.0A, and 60A non-repetitive surge current rating. It features 1500V case-to-terminal isolation, UL recognition (E94661), and RoHS-compliant silver-plated leads. Used in AC/DC power supplies for industrial control panels requiring compact, PCB-mountable full-wave rectification.

For engineers reviewing the 2W04G datasheet, 2W04G pinout, 2W04G application, or 2W04G equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (40°C/W junction-to-case), RMS reverse voltage (280V), and compliance with UL E94661 and RoHS Directive 2002/95/EC.

Technical Context

This single-phase, full-wave bridge rectifier integrates four silicon diodes in a WOG molded plastic package. It operates under 60Hz resistive or inductive loads without derating, but requires 20% average current reduction for capacitive loads per datasheet specification.

Thermal performance assumes mounting on a 13×13mm, 0.03mm-thick copper land area; junction temperature must remain within −65°C to +150°C. Total capacitance is 16pF per element at 1MHz and 4.0V reverse bias.

Key Specifications

Pinout & Package

Package: WOG - Molded plastic case, UL 94V-0 rated, 1.3g weight, dimensions A=8.84–9.86mm, B=4.00–4.60mm, C≤27.90mm, D=25.40mm, E=0.71–0.81mm, G=4.60–5.60mm. Polarity marked on body; terminals are silver-plated, solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU4K and KBP204, the 2W04G uniquely combines UL recognition, WOG compactness, and 40°C/W thermal resistance-making it optimal for space-constrained, safety-certified industrial power supplies where PCB area and regulatory compliance are critical.

Availability

2W04G is available at Aetrix Electronics and suitable for industrial power supplies, appliance control boards, LED driver auxiliary circuits, and AC-fed HVAC sensor nodes requiring stable component supply and long-term manufacturability.

Supply support for 2W04G 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 2WxxG series targets cost-effective, high-reliability AC/DC front-end rectification in industrial, appliance, and lighting applications-emphasizing UL recognition, thermal efficiency, and RoHS compliance without premium packaging.

FAQ

Is the 2W04G recommended for new designs?

No-the official Diodes Incorporated datasheet explicitly states "NOT RECOMMENDED FOR NEW DESIGN" for the entire 2W005G–2W10G family. This reflects obsolescence planning; existing designs may continue using it, but new projects should evaluate modern alternatives like the GBU4K or newer Diodes offerings such as the DBL204G.

What is the maximum allowable ambient temperature for full 2.0A operation?

Per Figure 1 in the datasheet, full 2.0A average output current is only guaranteed at TA = 25°C. At 75°C ambient, the derated current is approximately 1.2A; at 100°C, it drops to ~0.7A. Thermal design must ensure junction temperature stays ≤150°C using the 40°C/W RθJC value and appropriate PCB copper area.

Does the 2W04G support capacitive load configurations?

Yes, but with mandatory 20% current derating. The datasheet specifies that for capacitive loads, the average rectified output current (IO) must be reduced by 20% from the rated 2.0A-i.e., limited to 1.6A-to prevent overheating and premature failure due to high peak charging currents.

How is polarity marked on the 2W04G package?

Polarity is marked directly on the body: "+" and "−" symbols indicate the positive and negative DC output terminals, while "~" symbols adjacent to the AC input pins denote the two AC input terminals. The physical layout follows standard WOG bridge orientation-+DC and −DC are diagonally opposite, with ~AC1 and ~AC2 on the other diagonal.