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Taiwan Semiconductor Corporation GBU406H
- Part No.:
- GBU406H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU406H.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 4A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:2,913
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Product details
Overview
GBU406H from Taiwan Semiconductor is a 4A, 800V AEC-Q101 qualified standard bridge rectifier in GBU package, featuring 1500VRMS dielectric strength, 150A surge current (8.3ms), and 4°C/W junction-to-case thermal resistance. It serves as the AC/DC front-end rectification stage in automotive-grade power supplies.
For engineers reviewing the GBU406H datasheet, GBU406H pinout, GBU406H application, or GBU406H equivalent, key selection criteria include peak reverse voltage rating, surge current capability under transient conditions, thermal resistance for board-level thermal design, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This quad-diode bridge integrates four silicon PN junctions in a single-phase full-wave configuration with common cathode/anode topology. Its 800V VRRM and 150A IFSM (8.3ms) support high-reliability rectification in line-powered systems subject to mains transients.
Thermal performance is defined by RθJC = 4°C/W and RθJA = 20°C/W, enabling direct heatsink mounting via case contact. The device operates across -55°C to +150°C junction temperature range and meets UL 94V-0 flammability and RoHS/halogen-free requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage per diode; defines maximum AC input RMS voltage (≈566 VRMS) before breakdown |
| IF | 4 A - Average forward current rating at case temperature ≤75°C; determines continuous DC output capability |
| IFSM (8.3ms) | 150 A - Non-repetitive surge current handling; supports inrush current during cold start of SMPS |
| RθJC | 4 °C/W - Junction-to-case thermal resistance; enables direct thermal coupling to heatsink without thermal pad compromise |
| VF @ 4A | 1.1 V - Forward voltage drop per diode at rated current; sets conduction loss (≈4.4 W total bridge loss at 4A) |
| IR @ 125°C | 500 µA - Reverse leakage per diode at max operating temperature; impacts standby power in high-impedance circuits |
Pinout & Package
Package: GBU - molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.0 g weight, polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | AC Input Terminal 1 | One leg of AC input; connects to live/line side of transformer secondary or EMI filter output |
| AC2 | AC Input Terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| + (Anode Common) | Positive DC Output | Full-wave rectified positive output node; feeds bulk capacitor or PFC stage |
| – (Cathode Common) | Negative DC Output | Full-wave rectified negative/return node; system ground reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics requiring extended temperature cycling, humidity, and mechanical shock compliance |
| 1500 VRMS dielectric strength | Ensures isolation integrity between AC input and DC output sides under high-voltage stress and pollution conditions |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification in North America without additional component-level testing |
| Halogen-free construction | Complies with IEC 61249-2-21 for environmentally restricted applications and safer thermal decomposition |
Applications
| Automotive Onboard Charger (OBC) Front-End | Industrial LED Driver Input Stage |
|---|---|
Use Scenario: Rectifies 230 VAC grid input in bidirectional OBC units for EV charging. IC Role / Device Role / Timing Role: Standard bridge rectifier providing isolated full-wave DC bus prior to PFC and DC/DC conversion stages. Use Value: AEC-Q101 qualification and 150 A surge rating ensure robustness against grid transients and repeated cold starts in vehicle environments. | Use Scenario: Converts AC mains to DC for constant-current LED string drivers in street lighting. IC Role / Device Role / Timing Role: Primary-side rectifier delivering stable DC link voltage to downstream buck or flyback controllers. Use Value: 800 V VRRM accommodates 277 VAC commercial lighting inputs with margin; 4°C/W RθJC supports compact heatsink integration. |
| Medical Power Supply Input Module | Appliance SMPS Bulk Rectification |
Use Scenario: AC/DC conversion in Class II medical power supplies where reinforced insulation and low leakage are critical. IC Role / Device Role / Timing Role: Isolated bridge rectifier forming first stage of dual-redundant input path with creepage/clearance compliance. Use Value: 1500 VRMS dielectric strength and 500 µA max reverse leakage at 125°C meet IEC 60601-1 creepage and leakage current limits. | Use Scenario: High-volume rectification in white-goods SMPS (refrigerators, washing machines). IC Role / Device Role / Timing Role: Cost-optimized, surface-mountable bridge replacing discrete diode solutions in space-constrained PCB layouts. Use Value: GBU package footprint and 20/tube packaging enable automated assembly; RoHS/halogen-free compliance satisfies global regulatory mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU406 | No AEC-Q101 qualification; identical electrical specs and package | Not suitable for automotive or mission-critical industrial use requiring stress-tested reliability | Select GBU406H when AEC-Q101 compliance is mandatory; otherwise GBU406 offers cost advantage |
| GBU806 | 8A rating, same 800V VRRM, larger GBU-8 package, higher IFSM (300A) | Used where higher continuous current or surge margin is required; requires PCB layout change | Choose GBU806 only if >4A average current or >150A surge headroom is needed; not pin-compatible |
Compared with GBU406 and GBU806, the GBU406H uniquely delivers automotive-grade reliability in the standard GBU footprint-enabling drop-in qualification upgrades without layout revision, while GBU406 lacks stress validation and GBU806 demands mechanical redesign.
Availability
GBU406H is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial LED drivers, medical power supplies, and appliance SMPS requiring stable component supply with AEC-Q101 assurance.
Supply support for GBU406H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.
The GBU series was developed to deliver high-surge, high-isolation bridge rectifiers with automotive qualification and global safety certifications-targeting front-end AC/DC conversion in harsh-environment power systems.
FAQ
What is the peak repetitive reverse voltage rating of the GBU406H?
The GBU406H has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is specified per diode within the bridge and defines the maximum AC input voltage the device can block continuously without breakdown. It corresponds to a maximum RMS input voltage of approximately 566 V, making it suitable for universal-input and 277 VAC industrial applications with safety margin.
Is the GBU406H pin-compatible with non-AEC-Q101 versions like GBU406?
Yes, the GBU406H is mechanically and electrically pin-compatible with GBU406. Both share identical GBU package dimensions, terminal configuration (AC1, AC2, +, –), and all electrical specifications-including VRRM, IF, IFSM, and thermal resistance. The sole difference is AEC-Q101 qualification, which adds process-level stress testing but does not alter footprint or connectivity. GBU406H replaces GBU406 directly in automotive designs.
What is the maximum junction temperature and thermal resistance of the GBU406H?
GBU406H has a maximum junction temperature (TJMAX) of +150°C and thermal resistances of RθJC = 4°C/W (junction-to-case) and RθJA = 20°C/W (junction-to-ambient). These values allow direct heatsink mounting via the case for high-power dissipation, and define safe operating area boundaries when designing PCB copper pour and airflow for thermal management in enclosed power supplies.
Does the GBU406H meet UL and RoHS requirements?
Yes, the GBU406H is UL Recognized under File #E-326243 and fully RoHS compliant. It also meets halogen-free requirements per IEC 61249-2-21. These certifications confirm its suitability for safety-critical end equipment in North America and globally regulated markets, eliminating need for additional component-level safety retesting during final product certification.
What is the forward voltage drop of the GBU406H at rated current?
The forward voltage drop (VF) of the GBU406H is 1.1 V per diode at IF = 4 A and TJ = 25°C. Since the bridge conducts through two diodes in series during each half-cycle, total conduction loss is approximately 4.4 W at full load-critical for calculating efficiency and thermal design in high-density power converters.
GBU406H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 4 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU406H FAQ
1.How can I place an order for GBU406H through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU406H 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 GBU406H reliable?
The price and inventory of GBU406H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU406H is usually 5 days.
3.What payment methods are accepted for GBU406H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU406H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU406H?
GBU406H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU406H 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 GBU406H?
For technical support, including GBU406H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU406H requirements.
6.How does Aetrix verify that GBU406H is sourced from the original manufacturer or authorized distributors?
All GBU406H 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 GBU406H meets industry standards.
7.What is the process for return or replacement of GBU406H?
All GBU406H units undergo pre-shipment inspection (PSI). If there is an issue with GBU406H, 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 GBU406H part is unused and in its original packaging.
Return procedure for GBU406H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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