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Vishay General Semiconductor - Diodes Division GBU6G-M3/51
- Part No.:
- GBU6G-M3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU6G-M3/51.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 6A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:2,449
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Product details
Overview
GBU6G-M3/51 from Vishay General Semiconductor is a glass passivated single-phase bridge rectifier with 400 V maximum repetitive peak reverse voltage (VRRM), 6.0 A average forward rectified output current (IF(AV)), and 175 A peak forward surge current (IFSM). It features 1.0 V forward voltage drop at 6.0 A, 5 μA reverse leakage current at 25 °C, and operates from –55 °C to +150 °C junction temperature - used in AC/DC full-wave rectification for switching mode power supplies and home appliances.
For engineers reviewing the GBU6G-M3/51 datasheet, GBU6G-M3/51 pinout, GBU6G-M3/51 application, or GBU6G-M3/51 equivalent, key selection criteria include VRRM rating, thermal resistance (RθJA = 20 °C/W), case-mounted heatsink derating, UL E54214 recognition, and halogen-free RoHS-compliant M3 suffix construction.
Technical Context
The GBU6G-M3/51 implements a standard in-line single-phase bridge configuration with four diodes arranged as two anti-parallel pairs across AC inputs and DC outputs (+/– terminals). Its glass passivation ensures stable reverse blocking performance up to 400 V and low IR of 5 μA at rated VDC.
Thermal design relies on either PCB copper pad mounting (0.5" × 0.5", 9.5 mm lead length) or aluminum plate heatsink attachment (recommended torque: 5.7 cm-kg). Junction-to-ambient thermal resistance is 20 °C/W under PCB-mount conditions, while junction-to-case is 2.5 °C/W for heatsink-coupled operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports AC input up to 280 VRMS in full-wave rectifier topologies |
| IF(AV) | 6.0 A at TC = 90 °C - defines continuous DC output capability with heatsink |
| IFSM | 175 A - withstands single half-sine surge events common during power-up or line transients |
| VF @ 6.0 A | 1.0 V - determines conduction loss (6.0 W total for bridge at full load) |
| IR @ 25 °C | 5 μA - ensures minimal standby power loss and stable DC bus hold-up |
| TJ max. | +150 °C - enables operation in high-temperature environments including enclosed power adapters |
| RθJA | 20 °C/W - sets thermal rise over ambient for PCB-only mounting without heatsink |
Pinout & Package
Package: GBU case - molded plastic housing with matte tin-plated leads, UL 94 V-0 rated, halogen-free, RoHS-compliant (M3 suffix), polarity marked on body with beveled corner indicating positive output terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | AC input terminal | One of two symmetrical AC input connections; accepts bidirectional sinusoidal input |
| AC2 | AC input terminal | Second AC input; paired with AC1 to form full-wave bridge input port |
| + | DC positive output | Rectified anode-side output; marked by beveled corner on case |
| – | DC negative output | Rectified cathode-side return path; referenced to system ground in most SMPS designs |
Key Features
| Feature | Design Value |
|---|---|
| UL recognition E54214 | Validates safety compliance for end-equipment certification in North America |
| 1500 VRMS dielectric strength | Ensures isolation integrity between AC inputs and DC outputs under transient overvoltage stress |
| Solder dip 275 °C / 10 s | Confirms robustness during wave soldering processes without delamination or parameter shift |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth in long-life industrial and consumer applications |
| High IFSM (175 A) | Supports reliable cold-start behavior in high-capacitance-input SMPS without fuse nuisance tripping |
Applications
| Monitor Power Supply | Printer SMPS |
|---|---|
Use Scenario: AC/DC conversion stage in LCD monitor internal power supply delivering +12 V and +5 V rails. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 115/230 VAC mains to unregulated DC bus prior to PFC and DC/DC stages. Use Value: 400 V VRRM safely handles 230 VAC nominal + 10% tolerance; 6.0 A IF(AV) supports typical 60–100 W output power levels. | Use Scenario: Input rectification in laser printer main power module powering fuser heater and logic board. IC Role / Device Role / Timing Role: Primary-side bridge rectifier feeding bulk capacitor and active PFC controller. Use Value: 175 A IFSM accommodates high inrush into large bulk capacitors during wake-from-standby cycles. |
| Home Appliance Adapter | Audio Equipment PSU |
Use Scenario: Compact wall-mount adapter for smart speaker or IoT hub requiring regulated 5 V/3.3 V outputs. IC Role / Device Role / Timing Role: Isolated AC input rectifier in flyback converter primary side. Use Value: Glass passivation ensures long-term reliability under variable line conditions and thermal cycling in sealed enclosures. | Use Scenario: Dual-rail linear power supply for analog audio preamplifier or DAC circuitry. IC Role / Device Role / Timing Role: Bridge rectifier generating ±15 V DC rails from center-tapped transformer secondary. Use Value: Low VF (1.0 V) minimizes heat generation in space-constrained chassis; 5 μA IR preserves rail stability during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6G-E3/51 | Same electrical specs and package; RoHS-compliant but not halogen-free (E3 vs M3) | Acceptable where halogen-free requirement is not mandated (e.g., non-EU commercial grade) | Select GBU6G-E3/51 if RoHS suffices and cost sensitivity outweighs halogen-free compliance |
| KBU6G | Identical VRRM (400 V), IF(AV) (6.0 A), and package; higher IR (10 μA vs 5 μA) and no UL recognition | Not suitable for safety-certified end equipment requiring UL E54214 | Choose KBU6G only for cost-driven, non-certified internal subsystems with relaxed leakage and safety requirements |
Compared with GBU6G-M3/51, GBU6G-E3/51 offers identical performance with standard RoHS compliance, while KBU6G trades UL recognition and lower IR for lower cost - making GBU6G-M3/51 the preferred choice for certified, high-reliability AC/DC front-ends.
Availability
GBU6G-M3/51 is available at Aetrix Electronics and suitable for switching mode power supplies, home appliance adapters, and audio equipment power supplies requiring stable component supply, halogen-free compliance, and UL-recognized reliability.
Supply support for GBU6G-M3/51 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The GBU6G-M3/51 belongs to Vishay's GBU-series glass-passivated bridge rectifiers, engineered for high-surge, high-reliability AC/DC conversion in cost-sensitive yet safety-critical consumer and industrial power supplies.
FAQ
What is the maximum operating temperature for GBU6G-M3/51?
The GBU6G-M3/51 has a specified operating junction temperature range of –55 °C to +150 °C. This allows deployment in thermally demanding environments such as enclosed power adapters or industrial control units. Derating curves in the datasheet define safe current limits at elevated temperatures - for example, IF(AV) drops to 3.8 A at TA = 40 °C with PCB mounting. Thermal management must account for RθJA = 20 °C/W under standard conditions.
Does GBU6G-M3/51 require a heatsink for 6 A continuous operation?
Yes - continuous 6.0 A operation requires case temperature (TC) ≤ 90 °C, which mandates heatsink mounting per Figure 1 in the datasheet. PCB-only mounting (no heatsink) limits average current to 3.8 A at TA = 40 °C. The GBU6G-M3/51 achieves its full 6.0 A rating only when bolted to an aluminum plate heatsink using thermal compound and #6 screws, leveraging its low RθJC of 2.5 °C/W.
What does the "M3" suffix mean in GBU6G-M3/51?
The "M3" suffix in GBU6G-M3/51 indicates halogen-free, RoHS-compliant construction meeting JESD 201 Class 1A whisker resistance and UL 94 V-0 flammability standards. Unlike the E3 variant, M3 uses bromine- and chlorine-free molding compounds - required for compliance in EU markets and environmentally sensitive applications. The "51" denotes paper tray packaging (250 units).
How does GBU6G-M3/51 compare to GBU6J-M3/51 in terms of voltage rating?
GBU6G-M3/51 has a maximum repetitive peak reverse voltage (VRRM) of 400 V, whereas GBU6J-M3/51 is rated for 600 V. Both share identical IF(AV) = 6.0 A, IFSM = 175 A, VF = 1.0 V, and package. Select GBU6G-M3/51 for 230 VAC systems with margin; choose GBU6J-M3/51 for higher-line applications (e.g., 277 VAC lighting) or designs requiring greater voltage headroom against transients.
Is GBU6G-M3/51 suitable for use in medical-grade power supplies?
No - GBU6G-M3/51 is not specifically qualified for life-sustaining or life-supporting applications. Vishay explicitly states that its products are not designed for use where failure could result in personal injury or death unless expressly qualified in writing. For medical-grade PSUs, consult Vishay's certified portfolio or perform full risk assessment and validation per IEC 60601-1, including reinforced isolation and enhanced creepage/clearance verification beyond GBU6G-M3/51's 1500 VRMS rating.
GBU6G-M3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Tray
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 6 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
GBU6G-M3/51 FAQ
1.How can I place an order for GBU6G-M3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU6G-M3/51 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 GBU6G-M3/51 reliable?
The price and inventory of GBU6G-M3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU6G-M3/51 is usually 5 days.
3.What payment methods are accepted for GBU6G-M3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU6G-M3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU6G-M3/51?
GBU6G-M3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU6G-M3/51 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 GBU6G-M3/51?
For technical support, including GBU6G-M3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU6G-M3/51 requirements.
6.How does Aetrix verify that GBU6G-M3/51 is sourced from the original manufacturer or authorized distributors?
All GBU6G-M3/51 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 GBU6G-M3/51 meets industry standards.
7.What is the process for return or replacement of GBU6G-M3/51?
All GBU6G-M3/51 units undergo pre-shipment inspection (PSI). If there is an issue with GBU6G-M3/51, 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 GBU6G-M3/51 part is unused and in its original packaging.
Return procedure for GBU6G-M3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GBU6G-M3/51 Tags
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