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

Taiwan Semiconductor Corporation GBU2504

Name: GBU2504
Brand: Taiwan Semiconductor Corporation
SKU: GBU2504
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GBU2504

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Bridge Rectifiers

Package:: 4-SIP, GBU

Datasheet:: GBU2504.pdf

Description:: BRIDGE RECT 1PHASE 400V 25A GBU

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Product details

Overview

GBU2504 from Taiwan Semiconductor is a 25A, 400V standard bridge rectifier in GBU package, configured as a quad diode arrangement for full-wave AC-to-DC conversion. It delivers 300A surge current capability, 1.08V max forward voltage at 25A/25°C, and operates up to 150°C junction temperature-used in compact SMPS front-end rectification stages.

For engineers reviewing the GBU2504 datasheet, GBU2504 pinout, GBU2504 application, or GBU2504 equivalent, key selection criteria include repetitive peak reverse voltage (400V), thermal resistance (R_θJC = 1.0°C/W), UL recognition (E-326243), RoHS/halogen-free compliance, and mounting torque limit (0.56 N·m).

Technical Context

The GBU2504 integrates four silicon PN-junction diodes in a single-phase bridge configuration with common cathode/anode internal layout. Its 400V V_RRM rating targets mid-voltage AC line inputs (e.g., 115/230VAC systems), while the 1.3°C/W R_θJL enables efficient heat transfer to PCB copper or heatsinks.

Electrical behavior is defined by low forward drop (1.08V max @ 25A/25°C), tight reverse leakage (≤10 µA @ 25°C), and 100 pF junction capacitance per diode at 1 MHz/4V-critical for minimizing switching losses and EMI in high-frequency SMPS designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage per diode; defines safe AC input voltage range (e.g., ≤283V RMS).
I_F	25 A - Continuous average forward current; determines steady-state power handling without heatsink derating.
I_FSM	300 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush current tolerance during cold start.
V_F (max)	1.20 V @ 25A/25°C - Peak forward voltage per diode; directly impacts conduction loss and thermal rise in rectifier stage.
R_θJC	1.0 °C/W - Junction-to-case thermal resistance; enables direct thermal interface to heatsink for >25A operation.
I_R (max)	500 µA @ 125°C - Max reverse leakage per diode at elevated temperature; affects standby power and reliability in hot environments.
Weight	4.00 g - Physical mass impacting mechanical stability on PCB and vibration resistance in industrial mounts.

Pinout & Package

Package: GBU - Molded plastic case (UL 94V-0 rated), matte tin-plated leads, 4.00g weight, designed for through-hole PCB mounting with 0.56 N·m max torque.

Pin/Terminal	Circuit Role	Design Meaning
~AC1	AC input terminal 1	One of two AC input pins; connects to live/neutral side of transformer secondary or AC line.
~AC2	AC input terminal 2	Second AC input pin; completes full-wave bridge input path with ~AC1.
+DC	Positive DC output	Anode of output diodes; delivers rectified positive rail to bulk capacitor or regulator input.
-DC	Negative DC output	Cathode of output diodes; serves as circuit ground reference and return path for DC load current.

Key Features

Feature	Design Value
UL Recognition	File #E-326243 - Confirms safety compliance for end-equipment certification (e.g., IEC 62368-1) without additional testing.
RoHS & Halogen-Free	Meets IEC 61249-2-21 - Ensures environmental compliance and solderability in lead-free reflow processes.
High Surge Rating	300A I_FSM - Supports repeated cold-start surges in adapters and lighting ballasts without degradation.
Low Thermal Resistance	R_θJC = 1.0°C/W - Enables >20W dissipation with minimal ΔT to heatsink, reducing need for oversized thermal pads.

Applications

Switching Mode Power Supply (SMPS)	AC-DC Adapters
Use Scenario: Front-end rectification in 100–500W open-frame SMPS for servers and telecom equipment. IC Role / Device Role / Timing Role: Quad bridge rectifier converting 230VAC mains to unregulated DC bus prior to PFC and DC-DC stages. Use Value: 400V V_RRM provides 28% margin over 230VAC peak (325V), while 25A I_F sustains continuous load without forced air cooling.	Use Scenario: Compact wall-mount adapters for consumer electronics (e.g., monitors, printers). IC Role / Device Role / Timing Role: Primary-side AC-to-DC conversion feeding downstream flyback controller and optocoupler feedback loop. Use Value: Low 1.08V V_F reduces conduction loss by ~1.3W vs. higher-drop alternatives, improving adapter efficiency and thermal profile.
LED Lighting Drivers	Industrial Control Power Supplies
Use Scenario: Constant-current LED drivers in commercial troffer and streetlight fixtures. IC Role / Device Role / Timing Role: Input rectifier in non-isolated buck-PFC or hybrid resonant topologies operating at 100–200kHz. Use Value: 100pF junction capacitance minimizes high-frequency displacement current, reducing EMI filter component count and cost.	Use Scenario: DIN-rail mounted 24V/48V control power supplies for PLCs and motor drives. IC Role / Device Role / Timing Role: Robust rectification stage handling wide-input AC (85–305VAC) with high ambient temperature exposure. Use Value: 150°C T_JMAX and 500µA I_R @ 125°C ensure stable operation in enclosures exceeding 70°C ambient.

Switching Mode Power Supply (SMPS)

AC-DC Adapters

Use Scenario: Front-end rectification in 100–500W open-frame SMPS for servers and telecom equipment.

IC Role / Device Role / Timing Role: Quad bridge rectifier converting 230VAC mains to unregulated DC bus prior to PFC and DC-DC stages.

Use Value: 400V V_RRM provides 28% margin over 230VAC peak (325V), while 25A I_F sustains continuous load without forced air cooling.

Use Scenario: Compact wall-mount adapters for consumer electronics (e.g., monitors, printers).

IC Role / Device Role / Timing Role: Primary-side AC-to-DC conversion feeding downstream flyback controller and optocoupler feedback loop.

Use Value: Low 1.08V V_F reduces conduction loss by ~1.3W vs. higher-drop alternatives, improving adapter efficiency and thermal profile.

LED Lighting Drivers

Industrial Control Power Supplies

Use Scenario: Constant-current LED drivers in commercial troffer and streetlight fixtures.

IC Role / Device Role / Timing Role: Input rectifier in non-isolated buck-PFC or hybrid resonant topologies operating at 100–200kHz.

Use Value: 100pF junction capacitance minimizes high-frequency displacement current, reducing EMI filter component count and cost.

Use Scenario: DIN-rail mounted 24V/48V control power supplies for PLCs and motor drives.

IC Role / Device Role / Timing Role: Robust rectification stage handling wide-input AC (85–305VAC) with high ambient temperature exposure.

Use Value: 150°C T_JMAX and 500µA I_R @ 125°C ensure stable operation in enclosures exceeding 70°C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU2504G (Taiwan Semiconductor)	Same electrical specs; green compound (halogen-free) confirmed per IEC 61249-2-21, identical marking code and packaging.	No functional difference; used where halogen-free compliance is explicitly required in BOM documentation.	Select GBU2504G when RoHS+halogen-free traceability is mandated by OEM procurement policy.
KBU2504 (ON Semiconductor)	Identical 25A/400V rating, same GBU package, but R_θJC = 1.2°C/W (vs. 1.0°C/W) and I_FSM = 275A (vs. 300A).	Suitable for lower-surge applications; may require minor thermal margin review in high-inrush designs.	Choose KBU2504 only if supply chain diversification is prioritized and 25A/400V functionality is sufficient without needing peak surge headroom.

Compared with GBU2504, GBU2504G offers identical performance with documented halogen-free status, while KBU2504 trades 25A surge capacity and 0.2°C/W thermal resistance for second-source availability-neither is pin-compatible without verifying mechanical footprint alignment per datasheet drawings.

Availability

GBU2504 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting drivers requiring stable component supply, long-term lifecycle support, and UL-recognized rectification performance.

Supply support for GBU2504 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, serving global industrial, computing, and consumer markets since 1979.

The GBU series was developed for high-reliability, high-current AC/DC front-end rectification in space-constrained power systems-emphasizing thermal robustness, surge resilience, and regulatory compliance across global safety standards.

FAQ

What is the maximum junction temperature rating for the GBU2504?

The GBU2504 has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings table. This allows sustained operation in high-ambient environments such as enclosed LED drivers or industrial power supplies. Derating curves in the datasheet define usable current limits above 75°C case temperature. The GBU2504 must be mounted with appropriate thermal interface to maintain T_J ≤ 150°C under full 25A load.

Does the GBU2504 meet UL safety certification requirements?

Yes, the GBU2504 is UL Recognized under File #E-326243, confirming compliance with UL 60950-1 and UL 62368-1 for use in end-equipment power supplies. This certification covers flammability (UL 94V-0), dielectric strength, and construction integrity. The GBU2504's molded GBU package and internal diode layout were validated per UL test protocols, eliminating need for additional system-level rectifier testing.

What is the forward voltage specification for the GBU2504 at full rated current?

The GBU2504 exhibits a maximum forward voltage (V_F) of 1.20 V per diode at 25A and 25°C, measured under pulsed conditions (PW = 0.3ms). At 125°C junction temperature, V_F drops to 1.15 V max due to negative temperature coefficient of silicon diodes. This low V_F directly reduces conduction loss in the GBU2504 compared to legacy rectifiers, improving overall system efficiency.

Can the GBU2504 be used in 230VAC input applications?

Yes, the GBU2504 is rated for 400V repetitive peak reverse voltage (V_RRM), providing 28% margin above the 325V peak of 230VAC mains. Its 25A average forward current and 300A surge rating support typical inrush profiles in SMPS and adapters. The GBU2504's thermal resistance (R_θJC = 1.0°C/W) ensures safe operation when mounted on standard PCB copper or small heatsinks in 230VAC designs.

Is the GBU2504 compliant with RoHS and halogen-free standards?

Yes, the GBU2504 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and terminals are matte tin-plated for lead-free solder compatibility. This compliance is documented in Taiwan Semiconductor's material declarations and applies to all GBU2504 units shipped under version E2205 and later.

GBU2504 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: 4-SIP, GBU

Packaging:: Tube

Product Status:: Active

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 400 V

Current - Average Rectified (Io):: 25 A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 25 A

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: GBU

GBU2504 FAQ

1.How can I place an order for GBU2504 through Aetrix?

Please submit a Request for Quotation (RFQ) for GBU2504 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 GBU2504 reliable?

The price and inventory of GBU2504 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU2504 is usually 5 days.

3.What payment methods are accepted for GBU2504?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU2504 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GBU2504?

GBU2504 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GBU2504 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 GBU2504?

For technical support, including GBU2504 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU2504 requirements.

6.How does Aetrix verify that GBU2504 is sourced from the original manufacturer or authorized distributors?

All GBU2504 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 GBU2504 meets industry standards.

7.What is the process for return or replacement of GBU2504?

All GBU2504 units undergo pre-shipment inspection (PSI). If there is an issue with GBU2504, 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 GBU2504 part is unused and in its original packaging.

Return procedure for GBU2504:

1.Submit a request within 90 days.

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

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