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Taiwan Semiconductor Corporation GBU804
- Part No.:
- GBU804
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU804.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 8A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:990
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Product details
Overview
GBU804 from Diodes Incorporated is an 8A standard recovery bridge rectifier in GBU package, rated for 400V repetitive peak reverse voltage (VRRM), 1.0V max forward voltage at 4A, and 5µA max reverse leakage at 25°C. It features glass-passivated die construction, 1500VRMS case dielectric strength, and 200A non-repetitive surge capability-used in AC/DC power supplies for industrial motor drives.
For engineers reviewing the GBU804 datasheet, GBU804 pinout, GBU804 application, or GBU804 equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal resistance (2.2°C/W junction-to-case), IFSM rating for inrush tolerance, and UL recognition (E95060) for safety-compliant designs.
Technical Context
The GBU804 integrates four silicon diodes in a single-phase full-wave bridge configuration with standard recovery characteristics (trr not specified, consistent with standard recovery classification). Its 200A 8.3ms surge rating enables robust handling of capacitor-input filter inrush currents in offline power supplies.
Thermal performance relies on mounting to a 50mm × 50mm × 1.6mm copper heatsink, delivering 2.2°C/W junction-to-case resistance. The device operates from –55°C to +150°C junction temperature and exhibits 130pF typical junction capacitance at 1MHz/4V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Withstands peak reverse line voltage up to 400V in 230VAC systems with safety margin |
| IF(AV) | 8.0 A @ TC = +100°C - Continuous DC output current capability with proper heatsinking |
| VF Max | 1.0 V @ IF = 4A - Forward conduction loss impacts efficiency and thermal design at mid-load |
| IR Max | 5 µA @ VR = 400V, TA = +25°C - Low leakage preserves no-load regulation and reduces standby power loss |
| IFSM | 200 A (8.3ms half-sine) - Supports high inrush into bulk capacitors without failure |
| RθJC | 2.2 °C/W - Enables thermal modeling when mounted on specified 50×50mm copper heatsink |
| VB | 400 V @ IR = 5µA - Confirmed breakdown threshold aligns with VRRM rating |
Pinout & Package
Package: GBU - 4-pin through-hole plastic package with #6 screw mounting, 3.7g weight, UL 94V-0 flammability rating, and tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC Input Terminal 1 | One leg of AC input; connects to primary-side transformer or line filter |
| ~ (AC2) | AC Input Terminal 2 | Second leg of AC input; completes full-wave bridge AC path |
| + (DC+) | Positive DC Output | Full-wave rectified positive output node; feeds bulk capacitor or regulator input |
| – (DC–) | Negative DC Output / Common Return | DC return path; referenced to system ground or negative rail in ungrounded supplies |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or contaminated environments |
| 1500VRMS dielectric strength | Meets reinforced insulation requirements for Class II AC/DC converters per IEC 62368-1 |
| UL Recognized File #E95060 | Validates compliance with UL 60747-4 for discrete semiconductors in end-equipment safety certification |
| Lead-free & RoHS 3 compliant | Supports global environmental compliance without requiring exemption waivers for Sb/Br content |
| 200A surge rating | Enables use in high-capacitance input designs without external inrush limiters |
Applications
| Industrial Motor Drives | LED Street Lighting Power Supplies |
|---|---|
Use Scenario: AC mains-fed 24–48V DC bus generation for BLDC motor controllers in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Primary AC/DC conversion stage providing isolated, regulated DC bus via downstream buck converter. Use Value: 400V VRRM accommodates 230VAC ±10% with transient margin; 200A IFSM handles repeated startup surges. | Use Scenario: Outdoor LED lamp driver with universal 90–305VAC input and passive PFC topology. IC Role / Device Role / Timing Role: Full-wave bridge rectifier feeding valley-fill or choke-input filter before constant-current LED driver IC. Use Value: Low 5µA IR minimizes no-load power draw; UL recognition simplifies regional safety approvals. |
| Medical Diagnostic Equipment | Industrial PLC Power Modules |
Use Scenario: Auxiliary 12V/24V power supply in ultrasound imaging units requiring low EMI and high reliability. IC Role / Device Role / Timing Role: Front-end rectification stage preceding low-noise linear regulators for analog signal chain rails. Use Value: Glass-passivated die ensures stable leakage over 10-year field life; 1500VRMS isolation supports double-insulation requirements. | Use Scenario: DIN-rail mounted programmable logic controller with wide-input AC/DC power module. IC Role / Device Role / Timing Role: Main rectifier in 24V/48V output switch-mode power supply with active PFC front-end. Use Value: 8A IF(AV) supports >100W output; through-hole GBU package enables mechanical stability under vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8J (ON Semiconductor) | Same 400V VRRM, 8A IF(AV), but 1.1V VF max at 4A; slightly higher forward loss | Identical pinout and footprint; used in cost-sensitive consumer adapters | Select when sourcing flexibility is prioritized and 0.1V VF increase is acceptable in thermal budget |
| KBU8D (Comchip) | 400V VRRM, 8A IF(AV), 1.05V VF max; 1200VRMS isolation rating | Same GBU package; common in LED driver replacements where higher dielectric margin is required | Choose when enhanced isolation (1200VRMS vs. 1500VRMS) suffices and UL file alignment is secondary |
Compared with GBU8J and KBU8D, the GBU804 offers the lowest VF (1.0V) among 400V/8A bridges and carries UL E95060 recognition-critical for medical and industrial end-equipment certifications where leakage, isolation, and regulatory traceability are design-critical.
Availability
GBU804 is available at Aetrix Electronics and suitable for industrial motor drives, LED street lighting power supplies, medical diagnostic equipment, and industrial PLC power modules requiring stable component supply across multi-year production cycles.
Supply support for GBU804 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, medical, and lighting applications where surge robustness and safety certification are mandatory.
FAQ
What is the maximum operating temperature for the GBU804?
The GBU804 has a specified junction temperature range of –55°C to +150°C. Its thermal resistance is 2.2°C/W junction-to-case when mounted on a 50mm × 50mm × 1.6mm copper heatsink. Derating is required above +100°C case temperature per the IF(AV) curve in DS21227 Rev. 8–2.
Is the GBU804 suitable for automotive applications?
The GBU804 is not AEC-Q101 qualified and lacks PPAP documentation or IATF 16949 manufacturing evidence in its public datasheet. Diodes states that automotive-grade variants require direct engagement with their applications team-this part is intended for industrial, medical, and commercial power supplies.
Does the GBU804 have a specified reverse recovery time (trr)?
No-trr is not specified in DS21227 Rev. 8–2, confirming its classification as a standard (non-fast or ultrafast) recovery rectifier. It is not recommended for high-frequency switching topologies (>20kHz) where trr-induced losses dominate.
How is polarity marked on the GBU804 package?
Polarity is marked on the body: a white band identifies the DC+ (anode) output terminal. The two AC input pins (~) are unmarked and symmetrical; the DC– (cathode) terminal is opposite DC+ and adjacent to one AC pin per standard GBU outline.
GBU804 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 8 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 8 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU804 FAQ
1.How can I place an order for GBU804 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU804 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 GBU804 reliable?
The price and inventory of GBU804 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU804 is usually 5 days.
3.What payment methods are accepted for GBU804?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU804 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU804?
GBU804 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU804 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 GBU804?
For technical support, including GBU804 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU804 requirements.
6.How does Aetrix verify that GBU804 is sourced from the original manufacturer or authorized distributors?
All GBU804 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 GBU804 meets industry standards.
7.What is the process for return or replacement of GBU804?
All GBU804 units undergo pre-shipment inspection (PSI). If there is an issue with GBU804, 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 GBU804 part is unused and in its original packaging.
Return procedure for GBU804:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GBU804 Tags
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DF02M
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DF04M
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