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

Taiwan Semiconductor Corporation KBU1007G

Name: KBU1007G
Brand: Taiwan Semiconductor Corporation
SKU: KBU1007G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: KBU1007G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Bridge Rectifiers

Package:: 4-SIP, KBU

Datasheet:: KBU1007G.pdf

Description:: BRIDGE RECT 1PHASE 1KV 10A KBU

Quantity:: RFQ Add To RFQ list

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Inventory:482

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Product details

Overview

KBU1007G from Taiwan Semiconductor is a 10A, 1000V rated standard bridge rectifier in KBU package, featuring glass-passivated junctions, 200A surge capability, and UL Recognized (E-326243) construction; used in high-voltage AC/DC conversion for industrial SMPS and lighting ballasts.

For engineers reviewing the KBU1007G datasheet, KBU1007G pinout, KBU1007G application, or KBU1007G equivalent, key selection criteria include peak reverse voltage (1000V), forward current rating (10A), thermal resistance (R_θJA = 25°C/W), and RoHS-compliant matte tin-plated leads per J-STD-002.

Technical Context

The KBU1007G integrates four silicon diodes in a single-phase full-wave bridge configuration with quad-terminal layout. Its glass-passivated junction ensures stable reverse leakage (<5 µA at 25°C, <500 µA at 125°C) and high dielectric strength under repetitive 1000V peak reverse stress.

Thermally, it delivers R_θJC = 2.2°C/W to case and R_θJA = 25°C/W in free-air conditions. The device supports 8.3ms non-repetitive surge currents up to 200A and fusing I²t rating of 166 A²s.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Maximum repetitive peak reverse voltage; defines safe AC input handling up to 700 V_RMS.
I_F	10 A - Average forward current rating; determines continuous DC output capability in rectifier stage.
I_FSM	200 A - 8.3 ms half-sine surge current; supports inrush tolerance during power-up in SMPS and adapters.
T_J max	+150 °C - Maximum junction temperature; enables operation in high-ambient industrial environments.
R_θJA	25 °C/W - Junction-to-ambient thermal resistance; informs heatsink requirement for 10A continuous conduction.
V_F @ 10A	1.1 V - Forward voltage drop per diode at rated current; sets conduction loss (≈4.4 W total bridge loss).
I_R @ 125°C	<500 µA - Reverse leakage at elevated temperature; critical for low-power standby and high-temp reliability.

Pinout & Package

Package: KBU - molded plastic case with 4 axial leads (AC1, AC2, +, −), UL 94V-0 rated, 7.2 g weight, polarity marked on body.

Pin/Terminal	Circuit Role	Design Meaning
AC1	AC Input Terminal 1	One leg of AC input; connects to transformer secondary or line input; symmetrical with AC2.
AC2	AC Input Terminal 2	Second leg of AC input; completes full-wave bridge AC path; interchangeable with AC1.
+	Positive DC Output	Anode of output diodes; delivers rectified positive rail to filter capacitor or load.
−	Negative DC Output / Ground Reference	Cathode of output diodes; serves as return path and system ground reference point.

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable IR <500 µA at 125°C and long-term reliability in humid or contaminated environments.
UL Recognition E-326243	Validates safety compliance for end-equipment certification in commercial/industrial power supplies.
JESD 201 Class 1A whisker resistance	Prevents tin whisker growth on matte tin leads, ensuring solder joint integrity over 10+ year deployments.
2.2°C/W junction-to-case thermal resistance	Allows efficient heat transfer to heatsink or PCB copper, supporting 10A operation without forced air.
700 V_RMS reverse rating	Supports direct rectification of 400–480VAC three-phase line-derived supplies or high-voltage DC link inputs.

Applications

Industrial SMPS	LED Streetlight Drivers
Use Scenario: High-efficiency 300–500W offline switch-mode power supply for factory automation controllers. IC Role / Device Role / Timing Role: Primary AC/DC bridge rectifier converting 400VAC three-phase-derived 230VAC to pulsating DC. Use Value: 1000V V_RRM provides 2× margin over 400VAC peak (565V), preventing avalanche failure during line surges.	Use Scenario: Constant-current LED driver for outdoor street lighting operating from 220–240VAC mains. IC Role / Device Role / Timing Role: Input-stage bridge rectifier feeding PFC and flyback stages; handles 10A average input current. Use Value: 200A I_FSM withstands cold-start inrush into large bulk capacitors without degradation.
Medical Equipment Power Modules	Industrial Motor Drive Front-Ends
Use Scenario: Auxiliary power supply in diagnostic imaging systems requiring high reliability and low leakage. IC Role / Device Role / Timing Role: Isolated AC/DC front-end rectifier supplying control logic and sensor bias rails. Use Value: IR <5 µA at 25°C minimizes standby power loss and prevents false triggering in sensitive analog circuits.	Use Scenario: Rectification stage in 3kW variable-frequency drive input section using unregulated DC bus. IC Role / Device Role / Timing Role: Uncontrolled bridge delivering ~325VDC from 230VAC input to DC link capacitor bank. Use Value: R_θJC = 2.2°C/W enables direct mounting to aluminum chassis for passive thermal management.

Industrial SMPS

LED Streetlight Drivers

Use Scenario: High-efficiency 300–500W offline switch-mode power supply for factory automation controllers.

IC Role / Device Role / Timing Role: Primary AC/DC bridge rectifier converting 400VAC three-phase-derived 230VAC to pulsating DC.

Use Value: 1000V V_RRM provides 2× margin over 400VAC peak (565V), preventing avalanche failure during line surges.

Use Scenario: Constant-current LED driver for outdoor street lighting operating from 220–240VAC mains.

IC Role / Device Role / Timing Role: Input-stage bridge rectifier feeding PFC and flyback stages; handles 10A average input current.

Use Value: 200A I_FSM withstands cold-start inrush into large bulk capacitors without degradation.

Medical Equipment Power Modules

Industrial Motor Drive Front-Ends

Use Scenario: Auxiliary power supply in diagnostic imaging systems requiring high reliability and low leakage.

IC Role / Device Role / Timing Role: Isolated AC/DC front-end rectifier supplying control logic and sensor bias rails.

Use Value: IR <5 µA at 25°C minimizes standby power loss and prevents false triggering in sensitive analog circuits.

Use Scenario: Rectification stage in 3kW variable-frequency drive input section using unregulated DC bus.

IC Role / Device Role / Timing Role: Uncontrolled bridge delivering ~325VDC from 230VAC input to DC link capacitor bank.

Use Value: R_θJC = 2.2°C/W enables direct mounting to aluminum chassis for passive thermal management.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU1007	Same 10A/1000V rating, GBU package (larger footprint, higher R_θJA = 30°C/W)	Less space-constrained designs where board area allows larger outline and lower thermal performance is acceptable	Select when existing GBU footprint is standardized and thermal margin exceeds 5°C/W
W08M	Lower V_RRM (800V), same I_F/I_FSM, smaller WOB package (R_θJA = 28°C/W)	Cost-sensitive consumer adapters with 230VAC-only input and no surge margin requirement	Choose only if design operates strictly below 565V peak and requires compact size over 1000V safety margin

Compared with GBU1007 and W08M, the KBU1007G offers optimal balance of 1000V isolation margin, industry-standard KBU footprint, and superior thermal resistance-making it preferred for industrial-grade 400VAC-compatible systems where reliability and thermal headroom are critical.

Availability

KBU1007G is available at Aetrix Electronics and suitable for industrial SMPS, LED streetlight drivers, medical auxiliary power modules, and motor drive front-ends requiring stable component supply across multi-year production cycles.

Supply support for KBU1007G 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO 9001 and IATF 16949 certification.

The KBU series was designed specifically for high-reliability, high-voltage AC/DC front-end rectification in industrial and commercial power supplies-emphasizing surge robustness, thermal stability, and safety certification readiness.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for KBU1007G?

The KBU1007G has a V_RRM of 1000 V, confirmed in the Absolute Maximum Ratings table. This rating allows safe operation with AC inputs up to 700 V_RMS and provides 2× safety margin over 400VAC-derived 565V peak waveforms. The "7" in KBU1007G explicitly denotes the 1000V grade per Taiwan Semiconductor's ordering code convention.

Does KBU1007G meet RoHS and UL requirements?

Yes, KBU1007G is RoHS compliant and UL Recognized under file #E-326243. The device uses matte tin-plated leads compliant with J-STD-002, passes JESD 201 Class 1A whisker testing, and employs UL 94V-0 molding compound-fully documented in the Mechanical Data and Features sections of the official datasheet.

What is the forward voltage drop of KBU1007G at full rated current?

At I_F = 10 A and T_J = 25°C, the KBU1007G exhibits a maximum forward voltage of 1.1 V per diode. Since the bridge contains two conducting diodes in series per half-cycle, total conduction drop is up to 2.2 V, resulting in ≈4.4 W of resistive loss at full load.

Can KBU1007G replace KBU1006G in an existing design?

Yes, KBU1007G is a direct upgrade from KBU1006G (800V) with identical package, pinout, and thermal characteristics-only differing in V_RRM. No PCB or thermal redesign is needed; the higher voltage rating improves surge margin in 400VAC or line-transient-prone applications without affecting footprint or soldering process.

What is the junction-to-ambient thermal resistance (R_θJA) of KBU1007G?

The KBU1007G has a typical R_θJA of 25°C/W under standard JEDEC test conditions (free-air, no heatsink). This value assumes minimal copper pour; adding 25 cm² of 2 oz. copper on both sides reduces effective R_θJA to ~12°C/W, enabling sustained 10A operation at ambient temperatures up to 75°C.

KBU1007G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: 4-SIP, KBU

Packaging:: Tray

Product Status:: Active

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 1 kV

Current - Average Rectified (Io):: 10 A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 10 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:: KBU

KBU1007G FAQ

1.How can I place an order for KBU1007G through Aetrix?

Please submit a Request for Quotation (RFQ) for KBU1007G 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 KBU1007G reliable?

The price and inventory of KBU1007G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBU1007G is usually 5 days.

3.What payment methods are accepted for KBU1007G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBU1007G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KBU1007G?

KBU1007G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KBU1007G 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 KBU1007G?

For technical support, including KBU1007G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBU1007G requirements.

6.How does Aetrix verify that KBU1007G is sourced from the original manufacturer or authorized distributors?

All KBU1007G 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 KBU1007G meets industry standards.

7.What is the process for return or replacement of KBU1007G?

All KBU1007G units undergo pre-shipment inspection (PSI). If there is an issue with KBU1007G, 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 KBU1007G part is unused and in its original packaging.

Return procedure for KBU1007G:

1.Submit a request within 90 days.

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

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