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Diodes Incorporated KBJ406G
- Part No.:
- KBJ406G
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ406G.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 4A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
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Product details
Overview
KBJ406G from Diodes Incorporated is a 4.0A standard recovery bridge rectifier with 600V maximum repetitive peak reverse voltage (VRRM), 1.0V forward voltage at 2.0A, and 5.0µA reverse leakage current at 25°C, designed for AC-to-DC conversion in offline power supplies and industrial control power stages.
For engineers reviewing the KBJ406G datasheet, KBJ406G pinout, KBJ406G application, or KBJ406G equivalent, this device supports through-hole mounting with #6 screw fastening, delivers 120A surge capability, and meets UL Recognized Component Index (E95060) and RoHS 3 compliance for reliable deployment in safety-critical and high-reliability power systems.
Technical Context
This single-phase full-wave bridge rectifier integrates four silicon junction diodes in a molded KBJ package, enabling unidirectional DC output from AC input without external wiring. Its glass-passivated die construction ensures stable reverse blocking up to 600V and low IR drift over temperature.
The device operates across -55°C to +150°C junction temperature range and exhibits 5.5°C/W typical thermal resistance (junction-to-case) when mounted on a 75mm × 75mm × 1.6mm aluminum heatsink, supporting continuous 4.0A average output under thermally managed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage the bridge withstands without breakdown during AC line cycling. |
| IF(AV) | 4.0 A - Average DC output current sustainable per element at TJ = +150°C with heatsink. |
| VF @ 2.0A | 1.0 V - Forward voltage drop per diode leg at rated conduction, defining conduction loss in power stage. |
| IR @ 25°C | 5.0 µA - Reverse leakage current at rated VRRM, critical for low-power standby and high-impedance bias networks. |
| IFSM | 120 A - Non-repetitive peak surge current tolerance for 8.3ms half-sine, enabling robustness against line transients. |
| RθJC | 5.5 °C/W - Junction-to-case thermal resistance, used to calculate heatsink requirements for thermal design. |
| CT | 40 pF - Typical junction capacitance at 1MHz/4V reverse bias, influencing EMI filtering and high-frequency switching behavior. |
Pinout & Package
Package: KBJ - Molded plastic case with tin-plated leads, UL 94V-0 flammability rating, 4.6g mass, and polarity marked on body. Mounting via through-hole for #6 screw with max 5.0 in-lbs torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC Terminal 1 | One of two AC input nodes; connects to live/phase side of transformer secondary or AC line. |
| AC2 | Input AC Terminal 2 | Second AC input node; completes full-wave bridge input path with AC1. |
| + (Anode Output) | Positive DC Output | Full-wave rectified positive output terminal; feeds bulk capacitor or downstream regulator. |
| – (Cathode Output) | Negative DC Output / Common Return | DC return path; referenced to system ground or negative rail in isolated/non-isolated topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or contaminated environments. |
| 1500VRMS dielectric strength | Ensures safe isolation between AC inputs and DC outputs under transient overvoltage conditions. |
| UL Recognized (E95060) | Validates compliance with safety standards for end-equipment certification in North America. |
| Lead-free & RoHS 3 compliant | Meets global environmental regulations including EU Directive 2015/863/EU for hazardous substance limits. |
| 120A surge rating | Withstands inrush currents from cold-start capacitors or motor windings without degradation. |
Applications
| Industrial Power Supplies | AC Motor Control Boards |
|---|---|
Use Scenario: Rectifying 230VAC mains input in DIN-rail mounted PLC power modules. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus for DC-DC conversion. Use Value: 600V VRRM provides 2× safety margin over 230VAC RMS, while 4.0A IF(AV) supports 100W+ output power. |
Use Scenario: Providing DC link voltage for H-bridge IGBT drivers in 3-phase inverter auxiliary supplies. IC Role / Device Role / Timing Role: Off-line rectification stage feeding bulk capacitor before DC-DC regulation. Use Value: 120A IFSM handles startup surges from motor windings; glass passivation prevents corrosion in factory-floor environments. |
| LED Streetlight Drivers | Appliance Control Boards |
Use Scenario: Input rectification in constant-current LED drivers for outdoor lighting operating at 220–240VAC. IC Role / Device Role / Timing Role: Primary AC/DC conversion element establishing high-voltage DC bus for flyback controller IC. Use Value: UL recognition simplifies end-product safety certification; 5.0µA IR minimizes no-load power loss in standby mode. |
Use Scenario: Powering microcontroller and sensor rails in washing machine main control boards. IC Role / Device Role / Timing Role: Bridge rectifier supplying unregulated DC to linear regulators or buck converters. Use Value: Through-hole KBJ package enables mechanical stability during vibration; RoHS 3 compliance satisfies global appliance regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6K (ON Semiconductor) | Same 600V VRRM and 4.0A IF(AV), but GBU package has higher RθJC (6.0°C/W) and lower IFSM (100A). | Limited surge robustness in high-inrush applications; requires larger heatsink for same thermal performance. | Select when footprint compatibility with GBU socket is required and surge stress is below 100A. |
| W04M (Vishay) | 4.0A/600V rating in WOB package; VF = 1.1V @ 2.0A (0.1V higher), IR = 10µA @ 25°C (2× leakage). | Higher conduction loss and standby current; not UL recognized (E95060), requiring additional safety validation. | Choose only for cost-sensitive, non-safety-certified consumer products where leakage and efficiency are secondary. |
Compared with GBU6K and W04M, KBJ406G offers superior surge immunity (120A vs. ≤100A), lower leakage (5.0µA), UL recognition, and better thermal resistance-making it optimal for industrial, appliance, and safety-critical AC/DC front-ends.
Availability
KBJ406G is available at Aetrix Electronics and suitable for industrial power supplies, AC motor control boards, and LED streetlight drivers requiring stable component supply, long lifecycle support, and certified safety compliance.
Supply support for KBJ406G 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
KBJ4005G–KBJ410G belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in industrial, appliance, and infrastructure power systems.
FAQ
What is the maximum operating temperature for KBJ406G?
KBJ406G has a specified junction temperature range of -55°C to +150°C. It sustains 4.0A average output current only when mounted on a heatsink meeting the 75mm × 75mm × 1.6mm aluminum plate condition; derating applies above +125°C ambient.
Is KBJ406G suitable for automotive applications?
KBJ406G is not AEC-Q101 qualified. While it operates across -55°C to +150°C, Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing-contact Diodes directly for qualified alternatives.
Does KBJ406G have lead-free and halogen-free compliance?
Yes. KBJ406G carries RoHS 3 compliance per EU Directive 2015/863/EU and is defined by Diodes as "Green" - meaning halogen- and antimony-free per their quality documentation, with lead-free finish per MIL-STD-202.
How is polarity marked on the KBJ406G package?
Polarity is molded directly onto the plastic body: the cathode output (–) terminal is indicated by a distinct bar or stripe adjacent to its lead, while the anode (+) and AC terminals are identified by standardized KBJ outline geometry and silkscreen markings per DS21206 Rev. 10-2.
KBJ406G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, KBJ
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ406G FAQ
1.How can I place an order for KBJ406G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ406G 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 KBJ406G reliable?
The price and inventory of KBJ406G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ406G is usually 5 days.
3.What payment methods are accepted for KBJ406G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ406G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ406G?
KBJ406G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ406G 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 KBJ406G?
For technical support, including KBJ406G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ406G requirements.
6.How does Aetrix verify that KBJ406G is sourced from the original manufacturer or authorized distributors?
All KBJ406G 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 KBJ406G meets industry standards.
7.What is the process for return or replacement of KBJ406G?
All KBJ406G units undergo pre-shipment inspection (PSI). If there is an issue with KBJ406G, 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 KBJ406G part is unused and in its original packaging.
Return procedure for KBJ406G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJ406G Tags
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