Good-Ark Semiconductor W08G

Overview

W08G from Diodes Incorporated is a 1.5A glass passivated single-phase bridge rectifier with 800V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 1.5A (VFM), and 50A non-repetitive surge current capability (IFSM), designed for AC/DC conversion in offline power supplies and industrial control power stages.

For engineers reviewing the W08G datasheet, W08G pinout, W08G application, or W08G equivalent, key selection factors include its 800V blocking rating, 84°C/W junction-to-case thermal resistance, UL recognition (E94661), 1500V case-to-terminal isolation, and RoHS-compliant silver-plated leads suitable for high-reliability PCB mounting.

Technical Context

The W08G integrates four silicon diodes in a single-phase full-wave bridge configuration with glass passivated die construction, enabling stable operation up to +150°C junction temperature and supporting resistive/inductive loads at 60Hz without derating. Its molded plastic WOG package provides 1500V isolation between case and terminals.

Thermal performance is defined for mounting on a 13×13mm PCB copper land (0.03mm thick), delivering 84°C/W junction-to-case resistance. Total capacitance is 12pF per element at 1MHz and 4V reverse bias, minimizing high-frequency noise coupling in switching applications.

Key Specifications

Pinout & Package

Package: WOG - Molded plastic case, UL 94V-0 rated, 1.3g weight, 8.84–9.86mm length (A), 4.00–4.60mm width (B), 27.90mm height (C), 25.40mm lead spacing (D), 0.71–0.81mm lead thickness (E), 4.60–5.60mm lead width (G).

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU8K and MB10F, the W08G uniquely combines UL recognition, 1500V isolation, and optimized thermal resistance in a surface-mount-compatible WOG package-enabling certified, compact, and thermally efficient designs without heatsinks up to full rated current.

Availability

W08G is available at Aetrix Electronics and suitable for industrial motor drives, LED streetlight power supplies, appliance control boards, and AC-DC adapters requiring stable component supply, long-lifecycle support, and safety-certified rectification.

Supply support for W08G 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, industry-qualified components for power management, signal integrity, and protection.

The W08G belongs to Diodes' W0xG glass-passivated bridge rectifier family, engineered for cost-sensitive, safety-certified AC/DC front-ends in industrial, lighting, and consumer power applications where reliability, thermal efficiency, and regulatory compliance are essential.

FAQ

What is the maximum operating temperature for the W08G?

The W08G has a specified junction and storage temperature range of –65°C to +150°C. Its thermal resistance (RθJC = 84°C/W) and glass passivated die allow continuous operation at full 1.5A load up to +125°C ambient when mounted on a 13×13mm PCB copper pad, per datasheet Fig. 1 derating curve.

Does the W08G require a heatsink in typical applications?

No heatsink is required for W08G at 1.5A average current and 25°C ambient when mounted per datasheet conditions (13×13mm 0.03mm-thick copper land). At higher ambient temperatures or sustained loads, thermal simulation using RθJC = 84°C/W and board-specific RθCA is recommended to verify junction temperature remains below 150°C.

Is the W08G compatible with lead-free reflow soldering processes?

Yes. The W08G features lead-free, RoHS-compliant silver-plated leads qualified to MIL-STD-202, Method 208. It supports standard Pb-free reflow profiles (peak ≤260°C, 60–90 seconds above 217°C), and its molded plastic case meets UL 94V-0 flammability rating for process safety.

How does the W08G's 1500V isolation rating impact system-level safety design?

The 1500V case-to-terminal isolation enables reinforced insulation in Class II systems, eliminating the need for additional creepage/clearance barriers or isolation transformers in many AC/DC front-ends. This simplifies PCB layout, reduces bill-of-materials, and accelerates safety certification for end equipment complying with IEC 62368-1 or IEC 61000-4-5.