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Taiwan Semiconductor Corporation KBU1001G T0
- Part No.:
- KBU1001G T0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBU
- Datasheet:
-
KBU1001G T0.pdf
- Description:
- BRIDGE RECT 1PHASE 50V 10A KBU
- Quantity:
- Payment:
- Shipping:
Inventory:5,887
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Product details
Overview
KBU1001G from Taiwan Semiconductor is a 10A, 50V standard single-phase bridge rectifier in KBU package, featuring glass-passivated junctions, <1.0V forward voltage at 5A, <5µA reverse leakage at 25°C, and 200A surge capability - used in AC/DC front-end stages of compact SMPS and LED drivers.
For engineers reviewing the KBU1001G datasheet, KBU1001G pinout, KBU1001G application, or KBU1001G equivalent, key selection criteria include peak reverse voltage (50V), thermal resistance (RθJA = 25°C/W), junction temperature range (–55°C to +150°C), and UL recognition (E-326243) for safety-compliant power conversion designs.
Technical Context
The KBU1001G integrates four silicon diodes in a single-phase full-wave bridge configuration with quad-terminal layout (AC1, AC2, +, –), enabling direct AC-to-DC conversion without external interconnects. Its glass-passivated junction ensures stable reverse characteristics and low IR drift over temperature.
Designed for PCB mounting with matte tin-plated leads compliant with J-STD-002, it supports high-density layouts and meets UL 94V-0 flammability and JESD201 Class 1A whisker resistance requirements - critical for industrial and lighting applications requiring long-term reliability under thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 10 A - Sustains continuous DC output current in 50/60 Hz rectification without derating below 75°C ambient. |
| VRRM | 50 V - Maximum repetitive reverse voltage per diode; defines safe AC input range up to ~35 VRMS. |
| IFSM (8.3ms) | 200 A - Withstands inrush surges from cold-start capacitive loads in adapters and LED drivers. |
| RθJA | 25 °C/W - Requires ≥2.5 cm² copper pour for full 10A operation at TA = 75°C without heatsink. |
| IR @ 25°C | <5 µA - Minimizes standby power loss in low-power SMPS and energy-efficient lighting systems. |
| TJ Range | –55°C to +150°C - Enables deployment in enclosed, thermally constrained environments like LED troffers and wall adapters. |
Pinout & Package
Package: KBU - molded plastic case with 4 axial leads (AC1, AC2, +, –), UL 94V-0 rated, 7.2g 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 transformer secondary or line filter output. |
| 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; feeds bulk capacitor or PFC stage. |
| – | Negative DC Output / Common Return | Cathode-side return path; establishes DC reference for downstream regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable IR <5 µA at 25°C and <500 µA at 125°C - reduces thermal runaway risk in sealed enclosures. |
| UL Recognized (E-326243) | Validates compliance with UL 60747-4 for component-level safety - eliminates need for system-level re-certification in end equipment. |
| Junction-to-case RθJC | 2.2 °C/W - Allows direct thermal coupling to metal chassis or heatsink for high-reliability 10A operation. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and prevents whisker growth (JESD201 Class 1A) - essential for automotive-grade and medical-adjacent lighting. |
Applications
| LED Driver Power Supply | Wall-Mount AC/DC Adapter |
|---|---|
Use Scenario: Constant-current LED driver operating from universal 90–264 VAC input with compact form factor. IC Role / Device Role / Timing Role: Primary AC/DC rectification stage converting mains to unregulated DC bus before buck or flyback regulation. Use Value: Low VF (≤1.1 V @ 10A) minimizes conduction loss; 200A IFSM handles capacitor-charging surges during plug-in events. | Use Scenario: 12V/2A isolated adapter powering consumer electronics with strict no-load power limits. IC Role / Device Role / Timing Role: Input bridge rectifier feeding active clamp flyback controller and synchronous rectifier IC. Use Value: <5 µA IR at 25°C reduces standby consumption; UL recognition simplifies regulatory approval for Class II designs. |
| Industrial Control Power Module | Smart Lighting Ballast |
Use Scenario: DIN-rail mounted PLC power supply operating continuously in 70°C ambient cabinet environments. IC Role / Device Role / Timing Role: Front-end rectifier supplying 24V DC bus for logic and I/O circuitry. Use Value: 150°C TJ max and –55°C to +150°C storage range ensure operational stability across industrial temperature extremes. | Use Scenario: Integrated LED tube ballast with integrated EMI filtering and dimming interface. IC Role / Device Role / Timing Role: Mains rectification element preceding PFC controller and half-bridge inverter stage. Use Value: Glass passivation maintains reverse leakage stability over 50,000-hour lifetime; KBU package enables automated through-hole assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU1001 | VRRM = 50 V, IF = 10 A, same KBU footprint but GBU package has slightly higher RθJA (28°C/W). | No change in SMPS or adapter use; requires minor thermal review if operating >65°C ambient. | Preferred where GBU-series inventory already exists; identical electrical specs but lower thermal performance. |
| W10M | VRRM = 1000 V, IF = 1.5 A - higher voltage rating but lower current capacity and different DIP-4 package. | Not suitable for 10A continuous loads; usable only in low-power, high-voltage margin applications. | Select only when voltage derating >2× is required and average current ≤1.5 A; not a functional replacement for KBU1001G. |
Compared with GBU1001 and W10M, the KBU1001G delivers optimal balance of 10A current handling, 50V reverse rating, and 25°C/W thermal resistance in a UL-recognized KBU package - making it the preferred choice for cost-sensitive, thermally constrained 10A rectification tasks.
Availability
KBU1001G is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and wall-mount adapters requiring stable component supply, RoHS compliance, and UL safety certification.
Supply support for KBU1001G 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 power, industrial, and consumer markets since 1979.
The KBU series was developed specifically for high-reliability, high-surge AC/DC front-end rectification in space-constrained power supplies - emphasizing thermal robustness, low leakage, and regulatory readiness.
FAQ
What is the maximum continuous forward current rating for KBU1001G?
The KBU1001G is rated for 10 A average forward current (IF) at case temperature ≤75°C with adequate PCB copper area. Derating is required above 75°C ambient per the forward current derating curve in the datasheet; at 125°C case temperature, the usable IF drops to approximately 5.5 A. This rating assumes proper thermal management using the KBU package's 2.2°C/W junction-to-case resistance.
Does KBU1001G meet RoHS and REACH requirements?
Yes, KBU1001G is RoHS compliant per the manufacturer's documentation and meets EU Directive 2011/65/EU. It also conforms to REACH SVHC requirements with no substances of very high concern above threshold levels. The device carries the RoHS marking on its body and is listed in TSC's official compliance database with certificate reference J2103.
What is the reverse leakage current specification for KBU1001G at elevated temperature?
KBU1001G specifies a maximum reverse current (IR) of 500 µA at TJ = 125°C and rated VRRM = 50 V, measured under 30 ms pulse conditions. At 25°C, IR is guaranteed ≤5 µA. This low, temperature-stable leakage is enabled by glass passivation and supports energy-efficient designs where standby power must remain below 100 mW.
Can KBU1001G be used in place of KBU1002G in a 100V design?
No - KBU1001G has a 50 V repetitive peak reverse voltage (VRRM) rating and is not rated for 100 V applications. Substituting it for KBU1002G (VRRM = 100 V) risks premature breakdown under normal operating transients. Always match VRRM to the peak AC input voltage plus safety margin; for 100V-rated designs, KBU1002G or higher must be used.
Is KBU1001G suitable for surface-mount assembly?
No - KBU1001G uses a through-hole KBU package with four axial leads intended for wave or selective soldering. It is not designed for reflow or SMT processes. For surface-mount alternatives, consider TSC's SMBF or GBJ series bridge rectifiers, which offer compatible ratings in SMD packages such as GBJ and GBPC.
KBU1001G T0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SIP, KBU
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 50 V
- Current - Average Rectified (Io):
- 10 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 10 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:
- KBU
KBU1001G T0 FAQ
1.How can I place an order for KBU1001G T0 through Aetrix?
Please submit a Request for Quotation (RFQ) for KBU1001G T0 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 KBU1001G T0 reliable?
The price and inventory of KBU1001G T0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBU1001G T0 is usually 5 days.
3.What payment methods are accepted for KBU1001G T0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBU1001G T0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBU1001G T0?
KBU1001G T0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBU1001G T0 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 KBU1001G T0?
For technical support, including KBU1001G T0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBU1001G T0 requirements.
6.How does Aetrix verify that KBU1001G T0 is sourced from the original manufacturer or authorized distributors?
All KBU1001G T0 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 KBU1001G T0 meets industry standards.
7.What is the process for return or replacement of KBU1001G T0?
All KBU1001G T0 units undergo pre-shipment inspection (PSI). If there is an issue with KBU1001G T0, 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 KBU1001G T0 part is unused and in its original packaging.
Return procedure for KBU1001G T0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBU1001G T0 Tags
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