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Diodes Incorporated GBU402
- Part No.:
- GBU402
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU402.pdf
- Description:
- BRIDGE RECT 1PHASE 200V 4A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:1,113
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Product details
Overview
GBU402 from Diodes Incorporated is a 4.0A standard recovery bridge rectifier with 200V peak repetitive reverse voltage (VRRM), 1.0V max forward voltage at 2A, and 5µA max reverse leakage current at 25°C. It features glass-passivated die construction, 1500VRMS case dielectric strength, and is rated for 150A non-repetitive surge current. It is used in AC/DC power supplies for industrial control panels requiring robust through-hole rectification.
For engineers reviewing the GBU402 datasheet, GBU402 pinout, GBU402 application, or GBU402 equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal resistance (2.2°C/W junction-to-case), surge rating for motor-start conditions, and UL recognition for safety-compliant designs.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a molded GBU package with marked polarity and through-hole mounting. It operates across -55°C to +150°C junction temperature and requires derating to 3.2A for capacitive loads per datasheet guidance.
Its 80pF typical junction capacitance at 1MHz and 4V reverse bias supports stable operation in 50/60Hz line-frequency applications but limits suitability for high-frequency switching. The 93A²s I²t fusing rating defines its short-circuit withstand capability under 8.3ms half-sine surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands 200V peak reverse voltage without breakdown; suitable for 120VAC mains with 2× safety margin. |
| IF(AV) | 4.0 A @ TC = +100°C - Average rectified output current rating when mounted on 50mm × 50mm copper heatsink. |
| VF Max | 1.0 V @ IF = 2A - Forward voltage drop determines conduction loss (2.0W max per diode pair at 2A). |
| IR Max | 5 µA @ VR = 200V, TA = +25°C - Low leakage preserves efficiency in high-impedance hold-up circuits. |
| IFSM | 150 A - Peak surge current handling enables reliable operation during transformer inrush or motor startup. |
| RθJC | 2.2 °C/W - Thermal resistance defines heatsink sizing requirement for sustained 4A operation. |
Pinout & Package
Package: GBU - Molded plastic, UL 94V-0 rated, 3.7g weight, through-hole mount with #6 screw compatibility and 5.0 in-lb max torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC Input Terminal 1 | One of two alternating-current input pins; connects to live or neutral leg of transformer secondary. |
| ~ (AC2) | AC Input Terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1. |
| + (DC+) | Positive DC Output | Anode of internal output diode pair; delivers rectified positive voltage to filter capacitor or load. |
| – (DC–) | Negative DC Output | Cathode of internal output diode pair; serves as circuit common/return path for DC output. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid industrial environments. |
| 1500VRMS dielectric strength | Meets reinforced insulation requirements for Class II AC/DC power supplies per IEC 62368-1. |
| UL Recognized (E95060) | Validates safety compliance for end-equipment certification without additional component-level testing. |
| Lead-free, RoHS-compliant plating | Enables compliance with EU directives and supports automated soldering processes per MIL-STD-202. |
Applications
| Industrial AC/DC Power Supply | Motor Drive Front-End Rectification |
|---|---|
|
Use Scenario: Converts 120VAC/240VAC line input to unregulated DC bus in PLC power modules. IC Role / Device Role / Timing Role: Full-wave bridge rectifier providing isolated DC output with minimal conduction loss. Use Value: 4.0A average current rating and 150A surge capacity support continuous operation under variable load and transient overloads. |
Use Scenario: Rectifies transformer output feeding DC link capacitors in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: Standard-recovery bridge delivering low-leakage, high-VRRM rectification for motor control front ends. Use Value: 200V VRRM provides margin above 170V peak of 120VAC; 5µA IR minimizes standby power loss in idle states. |
| LED Driver Input Stage | Appliance Power Conversion |
|
Use Scenario: Provides bulk rectification in constant-current LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element before PFC and DC/DC stages. Use Value: Glass-passivated die ensures stability under thermal cycling in enclosed luminaires; UL recognition simplifies ETL listing. |
Use Scenario: Powers internal logic and relay coils in household appliances like washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Through-hole bridge rectifier enabling cost-effective, serviceable power supply design. Use Value: 2.2°C/W RθJC allows compact heatsinking; 3.7g weight supports mechanical robustness in vibration-prone environments. |
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 4A/200V rating; VF = 1.1V max at 2A; slightly higher thermal resistance (2.5°C/W). | Identical pinout and footprint; UL recognized but not AEC-Q qualified. | Select when sourcing diversification is required and 0.1V higher VF is acceptable in thermal budget. |
| KBU4B (Comchip) | 200V VRRM, 4A IF(AV); VF = 1.05V max; IR = 10µA max - double the leakage of GBU402. | Same GBU package; lacks UL recognition and 1500VRMS dielectric rating. | Use only in cost-sensitive, non-safety-critical applications where leakage and certification are not mandated. |
Compared with GBU4K and KBU4B, the GBU402 offers lower forward voltage, superior leakage performance, and UL recognition - making it preferred for safety-certified industrial power supplies where thermal margin and regulatory compliance are critical.
Availability
GBU402 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front-end rectification, and appliance power conversion requiring stable component supply and long-term manufacturability.
Supply support for GBU402 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, manufacturing, and sales operations across Asia, Europe, and North America.
The GBU series belongs to Diodes' standard-recovery bridge rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in industrial, appliance, and infrastructure power systems.
FAQ
What is the maximum operating temperature for the GBU402?
The GBU402 has a specified junction temperature range of -55°C to +150°C. Its 4.0A average current rating assumes case temperature ≤ +100°C when mounted on a 50mm × 50mm × 1.6mm copper heatsink. Exceeding +100°C case temperature requires linear derating per Figure 1 in DS21225 Rev. 8-2.
Is the GBU402 suitable for use in automotive applications?
The GBU402 is not AEC-Q200 qualified and is not recommended for automotive under-hood applications. Diodes Incorporated explicitly states that automotive-grade parts require specific change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to the standard GBU402. Use only in non-automotive industrial or consumer systems.
Does the GBU402 require a heatsink in all applications?
A heatsink is required to sustain 4.0A average current continuously. At ambient temperatures >40°C or with limited airflow, thermal derating applies. For intermittent 2A loads with adequate PCB copper area, a heatsink may be omitted - but junction temperature must remain ≤+150°C, verified via thermal calculation using RθJC = 2.2°C/W and RθCA estimates.
How does the GBU402 differ from fast-recovery bridge rectifiers?
The GBU402 uses standard-recovery diodes with ~2µs reverse recovery time, optimized for 50/60Hz line-frequency rectification. Fast-recovery bridges (e.g., GBU4J) have <500ns trr and lower VF at high frequency but higher cost and leakage. Using GBU402 in high-frequency SMPS causes excessive switching loss and EMI due to slow recovery.
GBU402 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 200 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU402 FAQ
1.How can I place an order for GBU402 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU402 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 GBU402 reliable?
The price and inventory of GBU402 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU402 is usually 5 days.
3.What payment methods are accepted for GBU402?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU402 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU402?
GBU402 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU402 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 GBU402?
For technical support, including GBU402 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU402 requirements.
6.How does Aetrix verify that GBU402 is sourced from the original manufacturer or authorized distributors?
All GBU402 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 GBU402 meets industry standards.
7.What is the process for return or replacement of GBU402?
All GBU402 units undergo pre-shipment inspection (PSI). If there is an issue with GBU402, 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 GBU402 part is unused and in its original packaging.
Return procedure for GBU402:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GBU402 Tags
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