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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Vishay General Semiconductor - Diodes Division GBU6M-M3/51

Name: GBU6M-M3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: GBU6M-M3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GBU6M-M3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Bridge Rectifiers

Package:: 4-SIP, GBU

Datasheet:: GBU6M-M3/51.pdf

Description:: BRIDGE RECT 1PHASE 1KV 6A GBU

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Product details

Overview

GBU6M-M3/51 from Vishay General Semiconductor is a glass passivated single-phase bridge rectifier with 1000 V maximum repetitive peak reverse voltage (V_RRM), 6.0 A average forward output current (I_F(AV)), and 175 A non-repetitive peak forward surge current (I_FSM). It operates at junction temperatures up to 150 °C and is used in AC/DC full-wave rectification for switching mode power supplies, adapters, and home appliances.

For engineers reviewing the GBU6M-M3/51 datasheet, GBU6M-M3/51 pinout, GBU6M-M3/51 application, or GBU6M-M3/51 equivalent, key selection criteria include its 1000 V blocking capability, 1.0 V forward voltage at 6.0 A, 5 μA reverse leakage at 25 °C, GBU package mechanical outline, and halogen-free RoHS-compliant M3 termination.

Technical Context

The GBU6M-M3/51 implements an in-line bridge configuration with four series-connected diodes arranged as a single-phase full-wave rectifier. Its glass passivation ensures stable reverse characteristics under humid or contaminated environments, and its 2.5 °C/W junction-to-case thermal resistance supports heatsink-mounted operation per recommended torque of 5.7 cm-kg.

Designed for PCB mounting with 0.5" × 0.5" (12 mm × 12 mm) copper pads and 9.5 mm lead length, it delivers 3.8 A average forward current at 40 °C ambient and derates linearly to zero at 125 °C ambient when mounted on PCB-enabling predictable thermal design in compact power supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - blocks peak reverse voltages up to 1000 V in AC line applications without breakdown
I_F(AV)	6.0 A at T_C = 90 °C - continuous DC output current capability with heatsink mounting
I_FSM	175 A - withstands single half-sine surge events (e.g., cold-start inrush in SMPS)
V_F @ 6.0 A	1.0 V - low conduction loss enabling >85 % rectifier efficiency in 12–24 V output designs
I_R @ 25 °C	5 μA - minimal leakage preserves no-load regulation and reduces standby power loss
T_J max.	150 °C - allows operation in high-ambient industrial or enclosed adapter environments
R_θJC	2.5 °C/W - enables direct thermal coupling to aluminum heatsinks for sustained 6 A operation

Pinout & Package

Package: GBU case style - molded plastic body with matte tin-plated leads, UL 94 V-0 rated, 0.720"–0.740" length, 0.190"–0.210" width, 0.130"–0.140" height, polarity marked on body with beveled corner indicating positive output terminal.

Pin/Terminal	Circuit Role	Design Meaning
~ (AC1)	AC input terminal 1	One leg of AC input; connects to transformer secondary or AC line phase
~ (AC2)	AC input terminal 2	Second leg of AC input; completes full-wave bridge input path
+	Positive DC output	Full-wave rectified anode-side output; connects to bulk capacitor positive rail
-	Negative DC output	Full-wave rectified cathode-side return; connects to bulk capacitor negative rail and system ground

Key Features

Feature	Design Value
UL recognition E54214	Meets UL safety standard for end-equipment certification without additional component-level testing
1500 V_RMS dielectric strength	Ensures isolation integrity between AC inputs and DC outputs under transient overvoltage conditions
Halogen-free, RoHS-compliant (M3)	Complies with IEC 61249-2-21 and JEDEC J-STD-20 for lead-free reflow and environmental compliance
Solder dip 275 °C / 10 s	Withstands wave soldering profiles without delamination or parameter shift
JESD 201 Class 1A whisker test	Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in sealed enclosures

Applications

Monitor Power Supply	Printer Mainboard Rectifier
Use Scenario: Converts 115/230 V AC mains to unregulated DC for internal DC-DC converters in LCD monitor power boards. IC Role / Device Role / Timing Role: Primary AC/DC bridge rectifier providing full-wave DC bus voltage to PFC and PWM controller stages. Use Value: 1000 V V_RRM accommodates 230 VAC + 30 % line surge; 175 A I_FSM handles cold-start inrush into large bulk capacitors.	Use Scenario: Supplies unregulated DC to motor drivers and logic rails in multifunction inkjet/laser printers. IC Role / Device Role / Timing Role: Front-end bridge rectifier converting transformer-isolated AC to DC for dual-rail (±12 V, +5 V, +3.3 V) generation. Use Value: Glass passivation prevents leakage-induced reset faults in humid office environments; 1.0 V V_F minimizes heat buildup in confined chassis.
Wall Adapter Output Stage	Home Appliance Control Board
Use Scenario: Delivers rectified DC to primary-side controllers in compact 12–24 V wall plug-in adapters for consumer electronics. IC Role / Device Role / Timing Role: Isolated AC/DC bridge rectifier operating directly from transformer secondary winding. Use Value: GBU package footprint fits tight PCB layouts; 6.0 A rating supports up to 72 W continuous output with margin.	Use Scenario: Powers microcontroller, display, and relay driver circuits in washing machines, microwaves, and air conditioners. IC Role / Device Role / Timing Role: Mains-fed bridge rectifier feeding offline SMPS or linear regulator input stage. Use Value: 150 °C T_J max and 2.5 °C/W R_θJC allow reliable operation inside thermally constrained appliance enclosures.

Monitor Power Supply

Printer Mainboard Rectifier

Use Scenario: Converts 115/230 V AC mains to unregulated DC for internal DC-DC converters in LCD monitor power boards.

IC Role / Device Role / Timing Role: Primary AC/DC bridge rectifier providing full-wave DC bus voltage to PFC and PWM controller stages.

Use Value: 1000 V V_RRM accommodates 230 VAC + 30 % line surge; 175 A I_FSM handles cold-start inrush into large bulk capacitors.

Use Scenario: Supplies unregulated DC to motor drivers and logic rails in multifunction inkjet/laser printers.

IC Role / Device Role / Timing Role: Front-end bridge rectifier converting transformer-isolated AC to DC for dual-rail (±12 V, +5 V, +3.3 V) generation.

Use Value: Glass passivation prevents leakage-induced reset faults in humid office environments; 1.0 V V_F minimizes heat buildup in confined chassis.

Wall Adapter Output Stage

Home Appliance Control Board

Use Scenario: Delivers rectified DC to primary-side controllers in compact 12–24 V wall plug-in adapters for consumer electronics.

IC Role / Device Role / Timing Role: Isolated AC/DC bridge rectifier operating directly from transformer secondary winding.

Use Value: GBU package footprint fits tight PCB layouts; 6.0 A rating supports up to 72 W continuous output with margin.

Use Scenario: Powers microcontroller, display, and relay driver circuits in washing machines, microwaves, and air conditioners.

IC Role / Device Role / Timing Role: Mains-fed bridge rectifier feeding offline SMPS or linear regulator input stage.

Use Value: 150 °C T_J max and 2.5 °C/W R_θJC allow reliable operation inside thermally constrained appliance enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU6K-M3/51	800 V V_RRM, otherwise identical package, thermal, and electrical specs	Not suitable for 230 VAC + surge designs requiring ≥1000 V blocking	Select only if system peak line voltage remains ≤670 V (e.g., 230 VAC nominal with <20 % tolerance)
KBU6M	Same 1000 V V_RRM, 6 A rating, but KBU package (larger footprint, higher R_θJA = 25 °C/W)	Requires larger PCB area and less efficient thermal dissipation than GBU6M-M3/51	Choose only when legacy KBU layout exists and heatsinking is not required above 2.5 A

Compared with GBU6K-M3/51 and KBU6M, the GBU6M-M3/51 uniquely balances 1000 V robustness, compact GBU footprint, and 2.5 °C/W thermal resistance-making it optimal for space-constrained, high-reliability 230 VAC-input power supplies where both surge immunity and thermal headroom are critical.

Availability

GBU6M-M3/51 is available at Aetrix Electronics and suitable for switching mode power supplies, wall adapters, and home appliance control boards requiring stable component supply and halogen-free compliance.

Supply support for GBU6M-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, power efficiency, and industrial-grade qualification.

The GBU6M-M3/51 belongs to Vishay's GBU-series glass-passivated bridge rectifiers, engineered for high-surge, high-voltage AC/DC conversion in cost-sensitive yet thermally demanding consumer and industrial power supplies.

FAQ

What is the maximum junction temperature rating for GBU6M-M3/51?

The GBU6M-M3/51 has a maximum junction temperature (T_J) of +150 °C, verified per Vishay Document Number 88615. This rating enables reliable operation in enclosed, high-ambient environments such as sealed power adapters and appliance control modules. Derating curves confirm usable output current down to 0 A at 125 °C ambient when PCB-mounted-ensuring safe thermal margins across real-world deployments of the GBU6M-M3/51.

Does GBU6M-M3/51 support lead-free reflow soldering?

Yes, the GBU6M-M3/51 features matte tin-plated leads qualified to J-STD-002 and JESD 22-B102, and is rated for solder dip at 275 °C for up to 10 seconds. Its M3 suffix confirms halogen-free, RoHS-compliant construction meeting JEDEC J-STD-20 requirements for lead-free reflow profiles. This makes the GBU6M-M3/51 compatible with standard Pb-free assembly processes without compromising solder joint integrity or parametric stability.

How does the GBU6M-M3/51 differ from GBU6J-M3/51?

The GBU6M-M3/51 and GBU6J-M3/51 share identical package, thermal, and mechanical specifications but differ in maximum repetitive peak reverse voltage: GBU6M-M3/51 is rated at 1000 V, while GBU6J-M3/51 is rated at 600 V. All other parameters-including I_F(AV) = 6.0 A, I_FSM = 175 A, V_F = 1.0 V, and R_θJC = 2.5 °C/W-are identical. Select GBU6M-M3/51 for 230 VAC systems with high line-surge requirements.

What is the thermal resistance from junction to ambient for GBU6M-M3/51?

The GBU6M-M3/51 has a typical junction-to-ambient thermal resistance (R_θJA) of 20 °C/W when mounted on a PCB with 0.5" × 0.5" (12 mm × 12 mm) copper pads and 9.5 mm lead length. This value assumes free-air convection cooling. For higher-power operation, the device achieves 2.5 °C/W R_θJC when bolted to an aluminum heatsink-enabling sustained 6 A current delivery in thermally managed designs using the GBU6M-M3/51.

Is GBU6M-M3/51 certified for UL safety standards?

Yes, the GBU6M-M3/51 carries UL recognition file number E54214, confirming compliance with UL/CSA 60950-1 and UL 62368-1 for use in end-equipment power supplies. This certification covers dielectric strength (1500 V_RMS), flammability (UL 94 V-0), and construction-reducing time-to-certification for systems integrating the GBU6M-M3/51 as the primary rectifier.

GBU6M-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):: 1 kV

Current - Average Rectified (Io):: 6 A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 6 A

Current - Reverse Leakage @ Vr:: 5 µA @ 1000 V

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: GBU

GBU6M-M3/51 FAQ

1.How can I place an order for GBU6M-M3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for GBU6M-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 GBU6M-M3/51 reliable?

The price and inventory of GBU6M-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 GBU6M-M3/51 is usually 5 days.

3.What payment methods are accepted for GBU6M-M3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU6M-M3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GBU6M-M3/51?

GBU6M-M3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GBU6M-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 GBU6M-M3/51?

For technical support, including GBU6M-M3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU6M-M3/51 requirements.

6.How does Aetrix verify that GBU6M-M3/51 is sourced from the original manufacturer or authorized distributors?

All GBU6M-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 GBU6M-M3/51 meets industry standards.

7.What is the process for return or replacement of GBU6M-M3/51?

All GBU6M-M3/51 units undergo pre-shipment inspection (PSI). If there is an issue with GBU6M-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 GBU6M-M3/51 part is unused and in its original packaging.

Return procedure for GBU6M-M3/51:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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