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Good-Ark Semiconductor W04G
- Part No.:
- W04G
- Manufacturer:
- Good-Ark Semiconductor
- Category:
- Bridge Rectifiers
- Package:
- 4-Circular, WOB
- Datasheet:
-
W04G.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 1.5A WOB
- Quantity:
- Payment:
- Shipping:
Inventory:2,479
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Product details
Overview
W04G from Diodes Incorporated is a 1.5A glass passivated single-phase bridge rectifier with 400V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 1.5A, and 50A non-repetitive surge current capability - used in AC/DC power supplies for industrial control modules, LED drivers, and appliance power stages.
For engineers reviewing the W04G datasheet, W04G pinout, W04G application, or W04G equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (84°C/W) for PCB layout, junction temperature limits (–65°C to +150°C), and UL recognition (E94661) for safety-compliant designs.
Technical Context
The W04G integrates four silicon diodes in a single-phase full-wave bridge configuration with glass passivated junctions for enhanced reliability under thermal cycling and humidity stress. Its 1.5A average output current rating assumes 25°C ambient with 13×13mm copper pads per terminal, and it requires 20% current derating when driving capacitive loads.
Designed for 60Hz line-frequency operation, the device exhibits 12pF typical total capacitance per element at 1MHz and 4V reverse bias, and maintains ≤5µA reverse leakage at 25°C and rated DC blocking voltage - critical for low-noise auxiliary power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum peak reverse voltage before breakdown; defines safe AC input range for 230VAC systems with margin. |
| IO (TA = 25°C) | 1.5 A - continuous DC output current with specified PCB copper area; derates to ~0.75A at 100°C ambient. |
| VFM @ 1.5A | 1.0 V - forward drop per diode pair; determines conduction loss (≈1.5W at full load) and heatsink requirements. |
| IFSM (8.3ms) | 50 A - surge withstand capability for inrush limiting; supports cold-start into bulk capacitors up to ~2200µF. |
| RθJC | 84 °C/W - thermal resistance from junction to case; requires ≥13×13mm 0.03mm-thick copper pad per terminal for rated current. |
| CT (per element) | 12 pF - junction capacitance at 1MHz/4V; impacts EMI filtering design and high-frequency noise coupling. |
| Isolation Voltage | 1500 V - case-to-terminal dielectric strength; satisfies reinforced insulation requirements for Class II power supplies. |
Pinout & Package
Package: WOG - molded plastic case, UL 94V-0 rated, 1.3g weight, with silver-plated leads solderable per MIL-STD-202 Method 208. Dimensions: 9.35mm (L) × 4.30mm (W) × 26.65mm (H) max (A=8.84–9.86mm, B=4.00–4.60mm, C=27.90mm, G=4.60–5.60mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | Input AC terminal 1 | One side of AC input; connects to transformer secondary or line filter output. |
| ~ (AC2) | Input AC terminal 2 | Other side of AC input; polarity agnostic for full-wave rectification. |
| + (DC+) | Positive DC output | Anode of internal upper diodes; feeds bulk capacitor or downstream regulator. |
| – (DC–) | Negative DC output / return | Cathode of internal lower diodes; serves as system ground reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enables stable reverse leakage (<5µA at 25°C) and long-term reliability in humid or thermally cycled environments. |
| UL Recognized (E94661) | Validates compliance with UL 60950-1/62368-1 for end-equipment safety certification without additional component-level testing. |
| 1500V case-to-terminal isolation | Supports reinforced insulation in double-insulated AC/DC converters, eliminating need for creepage/clearance barriers. |
| Lead-free, RoHS-compliant finish (DC 514+) | Meets EU Directive 2002/95/EC with glass and high-temp solder exemptions; compatible with standard Pb-free reflow profiles. |
| Moisture Sensitivity Level 1 | Permits unlimited floor life before assembly; no baking required prior to SMT or through-hole reflow. |
Applications
| Industrial Motor Drives | LED Lighting Power Supplies |
|---|---|
Use Scenario: Rectifying 50/60Hz AC from control transformers in PLC I/O modules and VFD logic power rails. IC Role / Device Role / Timing Role: Bridge rectifier providing isolated DC bus for 5V/12V regulators and optocoupler biasing. Use Value: 84°C/W RθJC enables natural-convection cooling on compact PCBs; UL recognition reduces safety certification effort. | Use Scenario: Converting mains AC to DC for constant-current LED drivers in streetlight and high-bay fixtures. IC Role / Device Role / Timing Role: Primary rectification stage feeding bulk capacitor and PFC controller ICs. Use Value: 50A IFSM handles lamp cold-start surges; 400V VRRM supports universal 90–264VAC input with margin. |
| Appliance Power Modules | Medical Auxiliary Power Supplies |
Use Scenario: AC/DC conversion in washing machine control boards and microwave oven microcontroller power rails. IC Role / Device Role / Timing Role: Full-wave rectifier delivering unregulated DC to linear regulators and relay drivers. Use Value: 1.0V VFM minimizes conduction loss in space-constrained enclosures; 1500V isolation meets IEC 60335 creepage requirements. | Use Scenario: Isolated auxiliary power generation for patient-monitoring device logic and sensor interfaces. IC Role / Device Role / Timing Role: Safety-isolated rectification stage in Class II, double-insulated power supplies. Use Value: UL E94661 listing and 1500V isolation satisfy IEC 60601-1 clause 8.8.2 for applied part auxiliary circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 400V VRRM and 1.5A IO, but TO-220AC package with higher RθJC (10°C/W) and 60A IFSM. | Requires heatsink for >1A continuous use; better suited for higher-surge, forced-air-cooled designs. | Select GBU4K when thermal budget allows heatsinking and surge immunity >50A is required. |
| MB10F (Vishay) | 400V VRRM, 1.0A IO, smaller MB-10 package, RθJC = 100°C/W, 30A IFSM. | Limited to lower-power applications; not suitable for sustained 1.5A loads without significant derating. | Choose MB10F only for space-constrained, <1A auxiliary rails where cost and footprint outweigh current capacity. |
Compared with GBU4K and MB10F, the W04G offers optimal balance of surge robustness (50A), thermal performance (84°C/W on standard PCB), and safety certification (UL E94661) for mid-power industrial and medical auxiliary supplies without requiring external heatsinks.
Availability
W04G is available at Aetrix Electronics and suitable for industrial motor drives, LED lighting power supplies, appliance power modules, and medical auxiliary power supplies requiring stable component supply, long-lifecycle support, and certified safety compliance.
Supply support for W04G 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, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The W04G belongs to Diodes' WOG-series glass-passivated bridge rectifiers - engineered for robust AC/DC conversion in safety-critical, thermally demanding, and long-lifecycle applications where UL recognition and moisture resilience are mandatory.
FAQ
What is the maximum allowable ambient temperature for W04G at full 1.5A load?
At 1.5A DC output, the W04G must be operated below 25°C ambient to maintain junction temperature within its –65°C to +150°C rating, assuming standard 13×13mm copper pads. Derating curves show usable current drops to ~0.75A at 100°C ambient due to its 84°C/W thermal resistance.
Does W04G require heatsinking in typical PCB-mount applications?
No heatsink is required if the W04G is mounted on a PCB with minimum 13×13mm (0.03mm thick) copper land areas per terminal and ambient temperature remains ≤50°C. Above that, thermal simulation or empirical testing is recommended to verify junction temperature stays below 125°C.
Can W04G be used in capacitive-input filter configurations without modification?
No - the datasheet mandates 20% current derating for capacitive loads. At 1.5A rated IO, this limits continuous current to 1.2A when feeding bulk electrolytic capacitors directly, to prevent overheating from high peak charging currents and increased RMS dissipation.
Is W04G compliant with modern environmental regulations beyond RoHS?
Yes - W04G carries DC 514+ marking confirming full RoHS compliance per EU Directive 2002/95/EC, including approved exemptions for glass and high-temperature solder. It also meets J-STD-020C Moisture Sensitivity Level 1 and UL 94V-0 flammability requirements.
W04G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Good-Ark Semiconductor
- Series:
- -
- Package/Case:
- 4-Circular, WOB
- Packaging:
- Box
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 750 mA
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- WOB
W04G FAQ
1.How can I place an order for W04G through Aetrix?
Please submit a Request for Quotation (RFQ) for W04G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for W04G reliable?
The price and inventory of W04G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W04G is usually 5 days.
3.What payment methods are accepted for W04G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W04G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W04G?
W04G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W04G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for W04G?
For technical support, including W04G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W04G requirements.
6.How does Aetrix verify that W04G is sourced from the original manufacturer or authorized distributors?
All W04G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that W04G meets industry standards.
7.What is the process for return or replacement of W04G?
All W04G units undergo pre-shipment inspection (PSI). If there is an issue with W04G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The W04G part is unused and in its original packaging.
Return procedure for W04G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W04G Tags
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