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Good-Ark Semiconductor GBU408
- Part No.:
- GBU408
- Manufacturer:
- Good-Ark Semiconductor
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU408.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 4A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
GBU408 from Diodes Incorporated is a 4.0A standard recovery bridge rectifier with 800V 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 GBU408 datasheet, GBU408 pinout, GBU408 application, or GBU408 equivalent, key selection criteria include VRRM rating for input voltage margin, IF(AV) derating behavior above 100°C case temperature, thermal resistance (RθJC = 2.2°C/W), 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 under resistive or inductive loads at 60Hz, with capacitive load current derated by 20%.
Its standard recovery characteristic implies ~2–5µs reverse recovery time (typical for this class), suitable for line-frequency applications but not high-frequency switching. Junction temperature range spans –55°C to +150°C, and thermal performance assumes mounting on a 50mm × 50mm × 1.6mm copper heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands peak reverse voltage up to 800V, enabling use with 560V RMS input (e.g., 400VAC three-phase rectified lines). |
| IF(AV) | 4.0 A @ TC = +100°C - Sustains average forward current of 4A when case temperature is held at 100°C, requiring heatsinking for full-load operation. |
| VF Max | 1.0 V @ IF = 2A - Forward conduction loss is ≤1.0V at 2A, yielding ~2W dissipation per conducting pair at full load. |
| IR Max | 5 µA @ VR = 800V, TA = +25°C - Low leakage preserves efficiency in high-impedance hold-up or sensing circuits. |
| IFSM | 150 A (8.3ms half-sine) - Handles inrush surges from cold-started transformers or large bulk capacitors without failure. |
| RθJC | 2.2 °C/W - Thermal resistance from junction to case enables predictable heatsink sizing when mounted on specified copper plate. |
| CT | 80 pF @ 1MHz, VR = 4V - Junction capacitance impacts EMI filtering design and high-frequency noise coupling in input stages. |
Pinout & Package
Package: GBU - Molded plastic, UL 94V-0 rated, 3.7g weight, through-hole mount with #6 screw hole. Dimensions: 22.05mm (L) × 7.65mm (W) × 18.55mm (H) typical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC Input Terminal 1 | One of two alternating-current input connections; tied internally to anode of D1 and cathode of D2. |
| ~ (AC2) | AC Input Terminal 2 | Second AC input; tied internally to cathode of D1 and anode of D2 - forms full-wave bridge input pair. |
| + (DC+) | Positive DC Output | Common cathode node of D1 and D3; delivers rectified positive output to filter capacitor or regulator. |
| – (DC–) | Negative DC Output | Common anode node of D2 and D4; serves as return path and ground reference for downstream circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances moisture and contamination resistance, improving long-term reliability in humid or dusty industrial environments. |
| 1500VRMS dielectric strength | Ensures isolation between AC inputs and DC outputs meets UL 94V-0 creepage/clearance requirements for Class II equipment. |
| 150A surge rating | Supports repeated cold-start events in motor drives or HVAC controllers without parametric shift or bond-wire failure. |
| UL Recognized (E95060) | Validates compliance with UL/CSA safety standards, reducing certification effort for end-equipment OEMs. |
| Lead-free, RoHS-compliant plating | Enables compliance with EU RoHS 3 (2015/863/EU) and facilitates Pb-free reflow or wave soldering processes. |
Applications
| Industrial AC/DC Power Supplies | Motor Drive Front-End Rectifiers |
|---|---|
Use Scenario: Converts 230VAC or 400VAC three-phase line input to unregulated DC bus in PLC power modules. IC Role / Device Role / Timing Role: Full-wave bridge rectifier providing isolated, polarity-corrected DC output before bulk capacitance and regulation. Use Value: 800V VRRM provides 20% margin over 400VAC peak (565V), ensuring safe operation during line transients and brownouts. | Use Scenario: Rectifies AC supply feeding IGBT gate driver power rails and logic supply in variable frequency drives. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion stage delivering stable DC bias for control ICs and isolated gate drivers. Use Value: 150A IFSM withstands repeated inrush from DC-link capacitor charging, eliminating need for NTC thermistors in compact designs. |
| Uninterruptible Power Supply (UPS) Input Stages | Commercial Lighting Ballast Rectification |
Use Scenario: Processes utility AC input in online UPS systems where battery backup must engage within milliseconds of outage. IC Role / Device Role / Timing Role: High-reliability bridge rectifier in dual-path input stage supporting both utility and generator sources. Use Value: –55°C to +150°C operating range ensures functionality during extended battery discharge heating and cold warehouse storage. | Use Scenario: Provides DC bus for electronic ballasts driving T5/T8 fluorescent lamps in office and retail lighting fixtures. IC Role / Device Role / Timing Role: Line-frequency rectifier feeding PFC controller and half-bridge inverter stage. Use Value: Low 5µA IR at 25°C minimizes standby power loss, supporting Energy Star and ERP Tier 2 efficiency compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay GBU8K | Same 800V VRRM, 4A IF(AV), but VF = 1.1V max @ 2A; RθJC = 2.5°C/W. | Slightly higher conduction loss and thermal resistance; requires larger heatsink area for same power dissipation. | Prefer GBU408 when board space or thermal budget is constrained; GBU8K acceptable where legacy sourcing or dual-sourcing is required. |
| ON Semiconductor GBPC408 | Identical VRRM (800V), IF(AV) (4A), but uses GBPC package (larger footprint, 4-pin SIP); VF = 1.05V max. | Requires PCB layout change due to different lead spacing and body height; not drop-in compatible. | Select GBPC408 only if existing design uses GBPC footprint or requires higher I²t rating (110 A²s vs. 93 A²s). |
Compared with GBU8K and GBPC408, GBU408 offers the lowest VF and best thermal resistance in the GBU form factor, making it optimal for space-constrained, thermally demanding industrial power supplies where consistent 4A output must be maintained across wide ambient ranges.
Availability
GBU408 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front-end rectifiers, and uninterruptible power supply (UPS) input stages requiring stable component supply and long-lifecycle support.
Supply support for GBU408 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 the Americas.
The GBU series belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in industrial, commercial, and infrastructure power systems.
FAQ
What is the maximum allowable case temperature for continuous 4.0A operation?
The GBU408 sustains 4.0A average forward current only when case temperature (TC) is held at or below +100°C, as defined in its absolute maximum ratings. Operation above this temperature requires linear derating per Figure 1 in the datasheet - e.g., ~2.8A at TC = +125°C. Heatsinking must be designed accordingly using RθJC = 2.2°C/W and ambient thermal conditions.
Is GBU408 suitable for use in AEC-Q101 qualified automotive applications?
No - the GBU408 is not AEC-Q101 qualified. While Diodes offers automotive-grade variants in other families, this device is intended for industrial and commercial applications. For automotive use, contact Diodes directly to request PPAP-capable, IATF 16949-manufactured alternatives meeting AEC-Q101 stress testing requirements.
How does the 1500VRMS dielectric strength impact PCB layout?
The 1500VRMS isolation rating mandates minimum creepage and clearance distances between AC input traces (~ and ~) and DC output pads (+ and –) on the PCB. Per IPC-2221B, this typically requires ≥3.2mm spacing for Pollution Degree 2 environments. The GBU package's internal molding and leadframe geometry achieve this without external potting or barriers.
Can GBU408 replace GBU406 or GBU410 in an existing design?
GBU408 may replace GBU406 (600V) if the application's peak reverse voltage stays ≤800V - offering increased transient margin. It cannot safely replace GBU410 (1000V) in circuits exposed to >800V transients, as VRRM is not exceeded. All share identical package, pinout, and thermal characteristics, so mechanical fit and soldering are fully compatible.
GBU408 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Good-Ark Semiconductor
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU408 FAQ
1.How can I place an order for GBU408 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU408 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 GBU408 reliable?
The price and inventory of GBU408 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU408 is usually 5 days.
3.What payment methods are accepted for GBU408?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU408 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU408?
GBU408 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU408 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 GBU408?
For technical support, including GBU408 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU408 requirements.
6.How does Aetrix verify that GBU408 is sourced from the original manufacturer or authorized distributors?
All GBU408 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 GBU408 meets industry standards.
7.What is the process for return or replacement of GBU408?
All GBU408 units undergo pre-shipment inspection (PSI). If there is an issue with GBU408, 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 GBU408 part is unused and in its original packaging.
Return procedure for GBU408:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GBU408 Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
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