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Taiwan Semiconductor Corporation KBU1003G T0
- Part No.:
- KBU1003G T0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBU
- Datasheet:
-
KBU1003G T0.pdf
- Description:
- BRIDGE RECT 1PHASE 200V 10A KBU
- Quantity:
- Payment:
- Shipping:
Inventory:2,776
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Product details
Overview
KBU1003G from Taiwan Semiconductor is a 10A, 200V repetitive peak reverse voltage (VRRM) glass-passivated quad-configuration bridge rectifier in KBU package, with 200A surge capability and 1.1V max forward voltage at 10A/25°C, used for AC-to-DC conversion in compact SMPS and lighting ballasts.
For engineers reviewing the KBU1003G datasheet, KBU1003G pinout, KBU1003G application, or KBU1003G equivalent, key selection criteria include VRRM=200V, IF=10A, IFSM=200A, RθJA=25°C/W, and UL recognition per file E-326243 - all verified for industrial-grade reliability and RoHS compliance.
Technical Context
The KBU1003G integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling direct AC input rectification without external interconnection. Its glass-passivated junction ensures stable leakage performance (IR ≤ 5 µA @ 25°C, ≤ 500 µA @ 125°C) and high dielectric strength.
Thermally optimized with RθJC = 2.2°C/W and RθJA = 25°C/W, it supports continuous 10A conduction at ambient up to 75°C when mounted on PCB with adequate copper area. The KBU package uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines minimum AC input voltage rating for safe operation. |
| IF | 10 A - Average forward current rating; determines continuous DC output capability in rectifier stage design. |
| IFSM | 200 A - Non-repetitive surge current handling for 8.3 ms half-sine; enables robust startup and transient overload tolerance. |
| VF (max) | 1.1 V @ 10A/25°C - Peak forward voltage drop per diode pair; directly impacts conduction loss and thermal design margin. |
| RθJA | 25 °C/W - Junction-to-ambient thermal resistance; sets required PCB copper area and airflow for thermal management. |
| IR (max) | 5 µA @ 25°C - Reverse leakage current per diode; critical for low-power standby efficiency and high-impedance circuit integrity. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in high-ambient industrial environments with appropriate derating. |
Pinout & Package
Package: KBU - molded plastic case with 4 axial leads (AC1, AC2, +, –), UL 94V-0 rated, 7.2g 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 leg of AC input; connects to primary winding or line-side AC source in full-wave bridge topology. |
| AC2 | AC Input Terminal 2 | Second leg of AC input; completes AC path into bridge; polarity not interchangeable with AC1. |
| + | Positive DC Output | Full-wave rectified positive output node; supplies filtered DC bus to downstream capacitors and regulators. |
| – | Negative DC Output / Common Return | DC return path; referenced to system ground or negative rail; must be routed with low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables IR ≤ 5 µA @ 25°C and long-term stability under humidity and thermal cycling stress. |
| UL Recognized (E-326243) | Validates safety compliance for end-equipment certification in commercial and industrial power supplies. |
| 200A IFSM surge rating | Supports reliable cold-start and inrush current handling in offline SMPS without external fusing. |
| J-STD-002 solderable leads | Ensures consistent wetting and joint integrity during wave or hand soldering processes. |
| JESD201 Class 1A whisker resistance | Prevents tin whisker growth in long-life applications, critical for automotive and medical-adjacent systems. |
Applications
| Switching Mode Power Supply (SMPS) | LED Lighting Ballast |
|---|---|
Use Scenario: Primary-side AC/DC rectification in 30–100W offline flyback converters powering consumer electronics. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting universal AC input (85–265VAC) to pulsating DC for bulk capacitor charging. Use Value: 200V VRRM provides 2× safety margin over 120VAC peak (170V), while 10A IF supports >85W continuous output with <1.1V conduction loss. | Use Scenario: Input rectification in constant-current LED drivers for streetlights and commercial downlights. IC Role / Device Role / Timing Role: Front-end bridge rectifier feeding PFC or buck-boost stages; operates continuously under high-temperature ambient conditions. Use Value: TJ max = +150°C and RθJA = 25°C/W allow stable operation at 75°C ambient with minimal heatsinking, reducing BOM cost. |
| AC/DC Adapter | Industrial Control Power Module |
Use Scenario: Compact wall-mount adapters delivering 12V/5A or 24V/3A for routers, IP cameras, and IoT gateways. IC Role / Device Role / Timing Role: Standard bridge rectifier in low-profile, cost-sensitive designs where board space and thermal mass are constrained. Use Value: KBU package footprint and 7.2g weight enable mechanical stability during automated assembly and vibration-prone deployment. | Use Scenario: Auxiliary power supply rectification in PLC I/O modules and motor drive control boards operating in factory environments. IC Role / Device Role / Timing Role: Isolated AC input rectification feeding isolated DC/DC converters powering logic and sensing circuits. Use Value: UL recognition and RoHS compliance meet industrial safety and environmental requirements; 200A IFSM withstands grid transients common in plant-floor distribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU10K-E3/51 (Vishay) | VRRM = 800V, same IF = 10A, higher VF = 1.15V max, RθJA = 28°C/W | Better suited for 230VAC-only or high-voltage transient environments; less thermally efficient | Select GBU10K-E3/51 only if VRRM > 200V is required; KBU1003G offers lower conduction loss and better thermal performance at 200V class. |
| W10M (ON Semiconductor) | VRRM = 1000V, IF = 1.5A (not 10A), smaller WOB package, no UL recognition | Lower current rating limits use to sub-20W adapters; lacks safety certification for industrial deployment | W10M is not a functional replacement for KBU1003G due to 85% lower IF rating; only consider for ultra-low-power, non-certified designs. |
Compared with GBU10K-E3/51 and W10M, the KBU1003G uniquely balances 200V VRRM, 10A IF, UL recognition, and 25°C/W thermal resistance - making it optimal for cost-sensitive, certified 30–80W industrial and lighting power supplies where reliability and thermal headroom are prioritized.
Availability
KBU1003G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting ballasts, and industrial control power modules requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for KBU1003G 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 KBU1003G belongs to TSC's standard bridge rectifier product line, engineered for high-reliability AC/DC front-end conversion in cost-sensitive, high-volume power applications with stringent safety and thermal requirements.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for KBU1003G?
The KBU1003G has a VRRM rating of 200 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2103). This value defines the highest AC peak voltage the device can block repeatedly without breakdown and is fixed for this specific variant within the KBU1001G–KBU1007G family.
Does KBU1003G have UL recognition, and what is the file number?
Yes, the KBU1003G is UL Recognized under file number E-326243, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This certification applies to the entire KBU1001G–KBU1007G series and validates compliance with UL 60950-1/62368-1 for end-equipment safety approvals.
What is the forward voltage (VF) specification for KBU1003G at full rated current?
The KBU1003G has a maximum forward voltage of 1.1 V at IF = 10 A and TJ = 25°C, per the Electrical Specifications table. This value is measured across the entire bridge (two diodes conducting), not per diode, and represents worst-case conduction loss under nominal operating conditions.
Is KBU1003G RoHS compliant, and does it meet lead-free soldering standards?
Yes, the KBU1003G is RoHS compliant and features matte tin-plated leads that meet J-STD-002 solderability requirements. The datasheet confirms compatibility with standard lead-free reflow and wave soldering processes, including wetting performance validation per industry-standard test methods.
What is the thermal resistance from junction to ambient (RθJA) for KBU1003G, and how is it measured?
The KBU1003G has a typical RθJA of 25°C/W, measured under standard JEDEC test conditions (single-layer 1-inch² copper pad on FR-4 PCB, still air). This value assumes no additional heatsinking and is used to calculate junction temperature rise under given power dissipation in real-world layout scenarios.
KBU1003G 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):
- 200 V
- Current - Average Rectified (Io):
- 10 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 10 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBU
KBU1003G T0 FAQ
1.How can I place an order for KBU1003G T0 through Aetrix?
Please submit a Request for Quotation (RFQ) for KBU1003G 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 KBU1003G T0 reliable?
The price and inventory of KBU1003G T0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBU1003G T0 is usually 5 days.
3.What payment methods are accepted for KBU1003G T0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBU1003G T0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBU1003G T0?
KBU1003G T0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBU1003G 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 KBU1003G T0?
For technical support, including KBU1003G T0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBU1003G T0 requirements.
6.How does Aetrix verify that KBU1003G T0 is sourced from the original manufacturer or authorized distributors?
All KBU1003G 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 KBU1003G T0 meets industry standards.
7.What is the process for return or replacement of KBU1003G T0?
All KBU1003G T0 units undergo pre-shipment inspection (PSI). If there is an issue with KBU1003G 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 KBU1003G T0 part is unused and in its original packaging.
Return procedure for KBU1003G T0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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