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

Taiwan Semiconductor Corporation GBU407-K

Name: GBU407-K
Brand: Taiwan Semiconductor Corporation
SKU: GBU407-K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GBU407-K

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Bridge Rectifiers

Package:: 4-ESIP, GBU

Datasheet:: GBU407-K.pdf

Description:: BRIDGE RECT 1PHASE 1KV 4A GBU

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Product details

Overview

GBU407-K from Taiwan Semiconductor is a 4A, 1000V repetitive peak reverse voltage (V_RRM) standard bridge rectifier in GBU package, configured as a quad diode arrangement for full-wave AC-to-DC conversion. It delivers 150A surge current capability, 1.1V max forward voltage at 4A/25°C, and operates up to 150°C junction temperature - deployed in high-reliability AC/DC front-end stages of industrial power adapters.

For engineers reviewing the GBU407-K datasheet, GBU407-K pinout, GBU407-K application, or GBU407-K equivalent, key selection criteria include V_RRM = 1000V, I_F = 4A, I_FSM = 150A, R_θJC = 4°C/W, and UL recognition per File #E-326243 - all critical for SMPS input rectification under transient overvoltage and thermal stress.

Technical Context

The GBU407-K integrates four silicon PN-junction diodes in a single-phase bridge configuration with common cathode/anode internal interconnects. Its 1000V V_RRM rating enables direct use on 800VAC line-derived inputs, while the 4°C/W junction-to-case thermal resistance supports conduction-cooled mounting on PCB copper pours or heatsinks.

Electrical behavior is defined by 1.1V max forward voltage at rated 4A DC load, 5µA max reverse leakage at 25°C, and 45pF typical junction capacitance per diode at 1MHz/4V - parameters directly governing conduction loss, leakage-induced standby power, and EMI filtering design in high-frequency switching supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - supports rectification of 707V RMS AC inputs with safety margin for line surges
I_F	4 A continuous - sustains steady-state output current in 50–100W SMPS front-ends
I_FSM	150 A (8.3ms half-sine) - withstands inrush currents during cold-start of capacitive-input supplies
V_F (max)	1.1 V @ 4A, 25°C - determines conduction loss (4.4W max per device at full load)
R_θJC	4 °C/W - enables thermal management via direct case-to-heatsink interface without forced air
Junction temp	−55°C to +150°C - permits operation in sealed industrial enclosures with ambient up to 105°C
UL File #	E-326243 - certifies dielectric strength (1500V_RMS) and flammability (UL 94V-0)

Pinout & Package

Package: GBU - molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.0g weight, 0.56 N·m max mounting torque.

Pin/Terminal	Circuit Role	Design Meaning
~AC1	AC input terminal 1	One leg of AC input; connects to primary-side transformer secondary or line filter output
~AC2	AC input terminal 2	Second leg of AC input; completes full-wave bridge input path
+DC	Positive DC output	Full-wave rectified positive rail; feeds bulk capacitor or PFC stage input
−DC	Negative DC output / common reference	Return path for DC load; establishes system ground reference point

Key Features

Feature	Design Value
UL Recognized (File #E-326243)	Validates 1500V_RMS isolation and flame-retardant molding compound for safety-critical AC mains interfaces
150A surge rating (8.3ms)	Enables reliable cold-start in high-capacitance input filters without fuse tripping or junction failure
4°C/W junction-to-case resistance	Allows direct thermal coupling to metal chassis or heatsink, reducing need for thermal vias or external cooling
RoHS & halogen-free (IEC 61249-2-21)	Meets global environmental compliance requirements for industrial and consumer end-equipment

Applications

Switching Mode Power Supply (SMPS)	AC/DC Adapters
Use Scenario: Input rectification stage of 65–100W offline flyback or LLC resonant converters. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting universal AC input (85–265VAC) to pulsating DC before bulk capacitor and PFC controller. Use Value: 1000V V_RRM provides margin against 1.5× line surges; 4A rating matches typical 80W adapter output current derated for efficiency.	Use Scenario: Compact wall-mounted or desktop AC/DC adapters for networking equipment and peripherals. IC Role / Device Role / Timing Role: Primary-side AC-to-DC conversion element in non-isolated or basic isolated topologies. Use Value: GBU package footprint enables high-density PCB layout; UL recognition satisfies end-product safety certification requirements.
LED Driver Power Supplies	Industrial Control Power Modules
Use Scenario: Constant-voltage LED drivers powering commercial signage or street lighting fixtures. IC Role / Device Role / Timing Role: Front-end rectifier feeding buck or flyback LED driver ICs operating from 277VAC line. Use Value: 1000V rating accommodates 277VAC + 20% tolerance and lightning-induced transients per IEC 61000-4-5.	Use Scenario: Auxiliary power supply for PLC I/O modules, motor drives, and HMI panels exposed to harsh factory environments. IC Role / Device Role / Timing Role: Robust AC input conditioning block delivering stable DC bias to control logic and isolation interfaces. Use Value: −55°C to +150°C operating range ensures reliability across wide ambient swings; 150A surge handles motor startup-induced grid disturbances.

Switching Mode Power Supply (SMPS)

AC/DC Adapters

Use Scenario: Input rectification stage of 65–100W offline flyback or LLC resonant converters.

IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting universal AC input (85–265VAC) to pulsating DC before bulk capacitor and PFC controller.

Use Value: 1000V V_RRM provides margin against 1.5× line surges; 4A rating matches typical 80W adapter output current derated for efficiency.

Use Scenario: Compact wall-mounted or desktop AC/DC adapters for networking equipment and peripherals.

IC Role / Device Role / Timing Role: Primary-side AC-to-DC conversion element in non-isolated or basic isolated topologies.

Use Value: GBU package footprint enables high-density PCB layout; UL recognition satisfies end-product safety certification requirements.

LED Driver Power Supplies

Industrial Control Power Modules

Use Scenario: Constant-voltage LED drivers powering commercial signage or street lighting fixtures.

IC Role / Device Role / Timing Role: Front-end rectifier feeding buck or flyback LED driver ICs operating from 277VAC line.

Use Value: 1000V rating accommodates 277VAC + 20% tolerance and lightning-induced transients per IEC 61000-4-5.

Use Scenario: Auxiliary power supply for PLC I/O modules, motor drives, and HMI panels exposed to harsh factory environments.

IC Role / Device Role / Timing Role: Robust AC input conditioning block delivering stable DC bias to control logic and isolation interfaces.

Use Value: −55°C to +150°C operating range ensures reliability across wide ambient swings; 150A surge handles motor startup-induced grid disturbances.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU4K (ON Semiconductor)	V_RRM = 800V, I_F = 4A, same GBU package and pinout	Limited to 277VAC systems without surge margin; lower V_RRM reduces safety margin in 400VAC industrial grids	Select when cost sensitivity outweighs need for 1000V rating and system-level surge immunity is managed elsewhere
KBU410 (Shindengen)	V_RRM = 1000V, I_F = 4A, KBU package (larger footprint, different lead pitch)	Requires PCB layout revision due to different mechanical outline and terminal spacing	Choose only if existing KBU-based designs require drop-in replacement with identical voltage/current specs

Compared with GBU4K and KBU410, the GBU407-K uniquely combines 1000V V_RRM, GBU package compatibility, and UL recognition in a single offering - enabling direct use in 400VAC industrial systems without layout change or external surge protection overhead.

Availability

GBU407-K is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and industrial control power modules requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for GBU407-K 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, specializing in rectifiers, TVS diodes, MOSFETs, and power ICs since 1979.

The GBU407-K belongs to TSC's standard bridge rectifier product line, engineered for high-voltage AC/DC front-end conversion in cost-sensitive yet reliability-critical industrial and consumer power applications.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the GBU407-K?

The GBU407-K has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V. This rating is explicitly specified in the Absolute Maximum Ratings table for the GBU407-K variant and distinguishes it from lower-voltage members of the GBU404-K–GBU407-K family. The 1000V rating allows the GBU407-K to safely handle 700V RMS input lines with margin for transient overvoltages.

Does the GBU407-K have UL recognition, and what does that cover?

Yes, the GBU407-K is UL Recognized under File #E-326243. This certification covers dielectric strength (1500V_RMS isolation between AC terminals and case), flammability (UL 94V-0 compliant molding compound), and construction suitability for end-product safety standards. UL recognition applies specifically to the GBU407-K and is documented in Taiwan Semiconductor's official datasheet revision E2103.

What is the forward voltage (V_F) specification for the GBU407-K at full rated current?

The GBU407-K has a maximum forward voltage (V_F) of 1.1 V at 4 A DC forward current and 25°C junction temperature. This value is measured per diode under pulse conditions (PW = 0.3 ms) and reflects worst-case conduction loss in the bridge. At higher temperatures or lower currents, V_F decreases - e.g., 1.0 V max at 2 A/25°C.

Can the GBU407-K be used as a direct replacement for the GBU406-K in an existing design?

Yes, the GBU407-K is mechanically and electrically compatible with the GBU406-K - same GBU package, identical pinout, 4A current rating, and shared thermal characteristics (R_θJC = 4°C/W). The only functional upgrade is the increase from 800V to 1000V V_RRM, which improves surge margin without requiring layout or thermal redesign. No changes to PCB or bill of materials are needed beyond part number substitution.

What is the junction-to-case thermal resistance (R_θJC) of the GBU407-K, and how is it used in thermal design?

The GBU407-K has a junction-to-case thermal resistance (R_θJC) of 4°C/W, measured under standardized test conditions. This parameter enables calculation of junction temperature rise above case temperature (ΔT_J = R_θJC × P_loss). For example, at 4A/25°C with 1.1V V_F, conduction loss is ~4.4W, resulting in a 17.6°C rise above case temperature - critical for verifying safe operation within the 150°C maximum junction limit.

GBU407-K Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: 4-ESIP, GBU

Packaging:: Tube

Product Status:: Active

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 1 kV

Current - Average Rectified (Io):: 4 A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 4 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

GBU407-K FAQ

1.How can I place an order for GBU407-K through Aetrix?

Please submit a Request for Quotation (RFQ) for GBU407-K 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 GBU407-K reliable?

The price and inventory of GBU407-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU407-K is usually 5 days.

3.What payment methods are accepted for GBU407-K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU407-K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GBU407-K?

GBU407-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GBU407-K 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 GBU407-K?

For technical support, including GBU407-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU407-K requirements.

6.How does Aetrix verify that GBU407-K is sourced from the original manufacturer or authorized distributors?

All GBU407-K 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 GBU407-K meets industry standards.

7.What is the process for return or replacement of GBU407-K?

All GBU407-K units undergo pre-shipment inspection (PSI). If there is an issue with GBU407-K, 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 GBU407-K part is unused and in its original packaging.

Return procedure for GBU407-K:

1.Submit a request within 90 days.

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

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