Diodes Incorporated GBU8005
- Part No.:
- GBU8005
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU8005.pdf
- Description:
- BRIDGE RECT 1PHASE 50V 8A GBU
- Quantity:
- Payment:

- Shipping:

Inventory:30
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Product details
Overview
GBU8005 from Diodes Incorporated is a standard recovery 8A bridge rectifier in GBU package, rated for 50V repetitive peak reverse voltage (VRRM), 1.0V max forward voltage at 4A, and 200A non-repetitive surge current. It features glass-passivated die construction, 1500VRMS case dielectric strength, and is designed for AC/DC power conversion in industrial power supplies and motor control circuits.
For engineers reviewing the GBU8005 datasheet, GBU8005 pinout, GBU8005 application, or GBU8005 equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal resistance (2.2°C/W junction-to-case), surge rating for inrush handling, and UL recognition (E95060) for safety-compliant designs.
Technical Context
This single-phase, full-wave bridge rectifier operates with standard recovery characteristics (typical trr > 500ns), optimized for 50/60Hz line-frequency applications. Its glass-passivated junction ensures stable leakage performance across temperature, with IR ≤ 5µA at 25°C and ≤ 500µA at 125°C.
The device uses four series-connected diode dies in a monolithic GBU plastic package with through-hole mounting and #6 screw compatibility. Thermal design relies on direct heatsink attachment via the metal tab, supported by a low RθJC of 2.2°C/W when mounted on a 50mm × 50mm × 1.6mm copper plate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets minimum insulation margin for 24–36VAC input stages. |
| IF(AV) | 8.0 A @ TC = +100°C - Average forward current capability under heatsink-cooled conditions; defines continuous DC output capacity. |
| VF Max | 1.0 V @ 4A, 25°C - Forward voltage drop at rated test current; determines conduction loss (≈4W at 4A) and thermal load. |
| IFSM | 200 A (8.3ms half-sine) - Surge current rating; supports capacitor-input filter inrush without failure. |
| RθJC | 2.2 °C/W - Junction-to-case thermal resistance; enables thermal modeling when bolted to external heatsink. |
| IR Max | 5 µA @ 25°C - Reverse leakage current; critical for low-power standby efficiency and high-impedance sensing circuits. |
| VB | 50 V - Breakdown voltage at 5µA IR; confirms VRRM rating with safety margin. |
Pinout & Package
Package: GBU - 4-pin, single-in-line (SIP), through-hole plastic package with integral metal heat-transfer tab. Dimensions: 22.05mm × 18.55mm × 7.65mm (L × W × H), weight ≈ 3.7g. Mounting via #6 screw with max torque 5.0 in-lb.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One leg of AC input; connects to transformer secondary or line input; symmetrical with AC2. |
| AC2 | Input AC terminal 2 | Second leg of AC input; completes full-wave bridge input path; polarity-independent. |
| + (Anode Output) | Positive DC output | Full-wave rectified positive rail; electrically common to anodes of two internal diodes. |
| – (Cathode Output) | Negative DC output | Full-wave rectified negative rail; electrically common to cathodes of two internal diodes. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable IR performance over temperature and humidity; eliminates need for conformal coating in humid environments. |
| 1500VRMS dielectric strength | Meets reinforced insulation requirements for Class II power supplies per IEC 62368-1. |
| 200A surge rating | Supports cold-start inrush into bulk capacitors up to 2200µF without degradation. |
| UL Recognized (E95060) | Validates flammability (94V-0), construction, and electrical safety for end-equipment certification. |
| Lead-free & RoHS compliant | Meets EU RoHS 3 (2015/863/EU); compatible with lead-free reflow and wave soldering processes. |
Applications
| Industrial Power Supply | Motor Control Interface |
|---|---|
Use Scenario: AC/DC conversion stage in DIN-rail mounted 24VDC power supplies feeding PLC I/O modules. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 24VAC transformer output to unregulated DC bus. Use Value: 8A IF(AV) and 200A IFSM handle sustained load and relay coil inrush; UL E95060 simplifies end-product safety approval. | Use Scenario: Rectification of 115VAC control power for brushed DC motor driver logic and gate bias rails. IC Role / Device Role / Timing Role: Input-stage bridge providing isolated DC for optocoupler drivers and MOSFET level-shifters. Use Value: 50V VRRM provides 2× margin over 24VAC control windings; low IR (<5µA) prevents false triggering in high-impedance enable paths. |
| Capacitor-Input Filter | Embedded HVAC Control |
Use Scenario: Bulk rectification in fan-speed controller with 1000µF smoothing capacitor and zero-cross detection. IC Role / Device Role / Timing Role: Primary rectifier establishing DC rail for triac gate drive and microcontroller supply. Use Value: 2.2°C/W RθJC allows direct mounting to chassis for passive cooling; 1.0V VF limits conduction loss to <4W at full load. | Use Scenario: Low-power AC mains interface in smart thermostat baseboard heater controllers. IC Role / Device Role / Timing Role: Isolated AC input rectifier powering 3.3V LDO for MCU and sensor subsystems. Use Value: Glass passivation ensures long-term reliability in temperature-cycling environments; RoHS compliance meets building product regulations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K (ON Semiconductor) | Same GBU package, 8A/50V rating, VF = 1.1V max @ 4A, IR = 10µA max @ 25°C. | Slightly higher VF increases conduction loss; higher IR may affect low-power standby. | Select if dual-sourcing required and minor VF/IR trade-off acceptable. |
| KBU8A (Comchip) | Identical ratings (8A/50V), same GBU package, VF = 1.05V max, IR = 5µA max, but no UL recognition. | Lacks UL E95060; requires additional safety testing for certified end equipment. | Use only in non-certified or cost-sensitive consumer-grade designs where UL is not mandated. |
Compared with GBU8005, GBU8K trades marginally higher losses for second-source availability, while KBU8A omits UL recognition-making GBU8005 the preferred choice for safety-certified industrial and HVAC applications requiring validated insulation and flammability compliance.
Availability
GBU8005 is available at Aetrix Electronics and suitable for industrial power supplies, motor control interfaces, capacitor-input filters, and embedded HVAC controls requiring stable component supply and regulatory compliance.
Supply support for GBU8005 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 applications where fast recovery is not required.
FAQ
What is the maximum operating junction temperature for GBU8005?
The GBU8005 has a specified operating junction temperature range of –55°C to +150°C. This allows reliable operation in high-ambient environments such as enclosed industrial enclosures or near heat-generating components, provided thermal design maintains TJ ≤ 150°C using the 2.2°C/W RθJC and appropriate heatsinking.
Can GBU8005 be used in PCB layouts with automated optical inspection (AOI)?
Yes-GBU8005's GBU package has clearly marked polarity (cathode bar on case) and standardized through-hole footprint compatible with AOI systems. The tin-finished leads meet MIL-STD-202 Method 208 solderability requirements, ensuring consistent solder joint inspection results in high-volume manufacturing.
Is GBU8005 qualified to AEC-Q101 for automotive use?
No-GBU8005 is not AEC-Q101 qualified. Diodes states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing; those parts are separately designated and must be requested directly from Diodes or authorized representatives.
How does the 1500VRMS dielectric strength impact board layout?
The 1500VRMS isolation between terminals and case mandates ≥2.5mm creepage/clearance from any conductive surface beneath the tab. When mounted with a #6 screw, ensure insulating shoulder washer and non-conductive standoff to preserve this rating-critical for meeting IEC 62368-1 reinforced insulation requirements.
GBU8005 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):
- 50 V
- Current - Average Rectified (Io):
- 8 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 4 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU8005 FAQ
1.How can I place an order for GBU8005 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU8005 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 GBU8005 reliable?
The price and inventory of GBU8005 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU8005 is usually 5 days.
3.What payment methods are accepted for GBU8005?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU8005 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU8005?
GBU8005 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU8005 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 GBU8005?
For technical support, including GBU8005 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU8005 requirements.
6.How does Aetrix verify that GBU8005 is sourced from the original manufacturer or authorized distributors?
All GBU8005 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 GBU8005 meets industry standards.
7.What is the process for return or replacement of GBU8005?
All GBU8005 units undergo pre-shipment inspection (PSI). If there is an issue with GBU8005, 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 GBU8005 part is unused and in its original packaging.
Return procedure for GBU8005:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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