Diodes Incorporated KBJ606G
- Part No.:
- KBJ606G
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ606G.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 6A KBJ
- Quantity:
- Payment:

- Shipping:

Inventory:13
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Product details
Overview
KBJ606G from Diodes Incorporated is a 6.0A standard recovery bridge rectifier with 600V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 3.0A, and 5.0µA reverse leakage current at 25°C, designed for AC-to-DC conversion in offline power supplies and industrial motor controls.
For engineers reviewing the KBJ606G datasheet, KBJ606G pinout, KBJ606G application, or KBJ606G equivalent, this device supports high-surge-capability (170A IFSM) through-hole rectification in cost-sensitive, thermally constrained 110°C case temperature environments requiring UL recognition and RoHS compliance.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a molded KBJ package with glass-passivated junctions. It operates under resistive/inductive loads at 60Hz, with derating required for capacitive loads (−20% IO).
Thermal performance is defined by 1.5°C/W junction-to-case resistance when mounted on a 75mm × 75mm × 1.6mm aluminum heatsink. Its 120A²s I²t rating supports fuse coordination against short-duration line surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage per diode leg; defines safe AC input range up to 420VRMS. |
| IO @ TC=110°C | 6.0 A - Average rectified output current with case temperature limited to 110°C; sets continuous DC load capability. |
| VF @ IF=3.0A | 1.0 V - Forward voltage drop per diode element; determines conduction loss (3.0W total for full bridge at 3A). |
| IR @ 25°C | 5.0 µA - Peak reverse leakage at rated DC blocking voltage; ensures low standby power in high-impedance circuits. |
| IFSM (8.3ms) | 170 A - Non-repetitive surge current rating; withstands typical AC line transients without failure. |
| I²t (t < 8.3ms) | 120 A²s - Fusing integral; enables coordination with fast-acting fuses in overcurrent protection schemes. |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; requires minimum heatsinking for sustained 6A operation. |
Pinout & Package
Package: KBJ - Molded plastic case (UL 94V-0), through-hole mountable with #6 screw hole, bright tin-plated leads, 4.3g mass, and polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One side of AC input winding; connects to transformer secondary or line filter output. |
| ~AC2 | AC Input Terminal 2 | Other side of AC input winding; completes full-wave bridge AC path. |
| +DC | Positive DC Output | Anode of output diode pair; delivers rectified positive rail to bulk capacitor or regulator input. |
| –DC | Negative DC Output / Common | Cathode of output diode pair; serves as return path and system ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances long-term reliability and moisture resistance in humid or contaminated environments. |
| 2500VRMS dielectric strength | Ensures isolation integrity between AC inputs and DC outputs under high-voltage stress testing. |
| UL Recognized (E95060) | Validates safety compliance for end-equipment certification in North America. |
| Lead-free & RoHS 3 compliant | Meets global environmental regulations without compromising solderability or thermal cycling performance. |
| 170A surge rating | Supports robust operation during cold-start inrush or lightning-induced line spikes without degradation. |
Applications
| Industrial Motor Drives | LED Streetlight Power Supplies |
|---|---|
Use Scenario: Rectifying 230VAC mains in three-phase drive front-ends with passive PFC. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus for subsequent DC-link filtering and inverter stage. Use Value: 600V VRRM safely handles 230VAC + 20% tolerance and transient spikes; 170A IFSM absorbs motor startup surges. | Use Scenario: Off-line AC/DC conversion in outdoor-rated LED luminaires with wide ambient temperature range. IC Role / Device Role / Timing Role: Primary rectification stage feeding bulk capacitor and constant-current LED driver IC. Use Value: −55°C to +150°C operating range ensures reliability in unventilated enclosures; UL recognition simplifies luminaire safety certification. |
| Appliance Control Boards | UPS Input Stages |
Use Scenario: Low-cost AC adapter for control logic in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Bridge rectifier supplying isolated 12V/24V DC rails via linear or buck regulator. Use Value: 1.0V VF minimizes heat generation on compact PCBs; KBJ package enables direct screw-mounting to metal chassis for thermal relief. | Use Scenario: Input rectification in line-interactive UPS systems with automatic voltage regulation. IC Role / Device Role / Timing Role: Front-end bridge handling bidirectional energy flow during battery backup and line-charge modes. Use Value: 120A²s I²t rating allows coordination with upstream circuit breakers; low IR reduces no-load losses during battery-only operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6K | Same 6A/600V rating, but GBU package has lower RθJC (1.2°C/W) and higher IFSM (200A); lead spacing differs (5.1mm vs KBJ's 5.5mm). | Preferred where board space permits larger footprint and higher thermal margin is needed. | Select GBU6K if heatsinking is limited and surge immunity beyond 170A is required. |
| KBPC606 | Identical electrical specs and KBJ-compatible pinout, but KBPC series uses epoxy molding (not UL-recognized) and lacks RoHS 3 compliance documentation. | Suitable for non-certified internal modules where safety agency approval is not mandated. | Choose KBPC606 only for cost-sensitive legacy designs without UL or RoHS 3 requirements. |
Compared with GBU6K and KBPC606, KBJ606G uniquely combines UL recognition, RoHS 3 compliance, and verified 2500VRMS isolation-making it optimal for certified industrial and outdoor power supplies where regulatory traceability and long-term supply continuity are critical.
Availability
KBJ606G is available at Aetrix Electronics and suitable for industrial motor drives, LED streetlight power supplies, appliance control boards, and UPS input stages requiring stable component supply and long-lifecycle support.
Supply support for KBJ606G 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, specializing in high-reliability power management, signal integrity, and protection solutions.
The KBJ series targets cost-effective, safety-certified AC/DC front-end rectification for industrial, lighting, and consumer power applications-emphasizing ruggedness, regulatory compliance, and thermal robustness in through-hole packages.
FAQ
What is the maximum recommended case temperature for continuous operation of KBJ606G?
The KBJ606G is rated for 6.0A average output current only when the case temperature (TC) is maintained at or below +110°C. Exceeding this limit requires derating per the datasheet's thermal curves. Mounting on a 75mm × 75mm × 1.6mm aluminum heatsink achieves the specified 1.5°C/W RθJC, enabling full-rated current in still-air environments.
Can KBJ606G be used in capacitive-input filter configurations without modification?
No-capacitive-input filters require a 20% reduction in average output current (to 4.8A) due to increased peak diode conduction angles and thermal stress. The datasheet explicitly mandates this derating to prevent overheating and premature failure. For such topologies, verify junction temperature using RθJC and measured case temperature.
Is the KBJ606G suitable for automotive applications per AEC-Q101?
No-the KBJ606G is not AEC-Q101 qualified. While Diodes offers AEC-Q101 versions in other bridge families (e.g., DBL series), the KBJ606G is intended for industrial, commercial, and lighting applications. Automotive use requires explicit qualification evidence, which is not provided in DS21207 Rev. 10-2.
How does the 2500VRMS dielectric strength impact PCB layout requirements?
The 2500VRMS isolation rating mandates minimum creepage and clearance distances between AC input terminals (~AC1/~AC2) and DC output terminals (+DC/–DC) on the PCB. Per IPC-2221B, this requires ≥4.0mm spacing in Pollution Degree 2 environments. Failure to maintain this compromises safety certification and risks arcing under humidity or contamination.
KBJ606G 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):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 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
KBJ606G FAQ
1.How can I place an order for KBJ606G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ606G 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 KBJ606G reliable?
The price and inventory of KBJ606G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ606G is usually 5 days.
3.What payment methods are accepted for KBJ606G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ606G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ606G?
KBJ606G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ606G 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 KBJ606G?
For technical support, including KBJ606G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ606G requirements.
6.How does Aetrix verify that KBJ606G is sourced from the original manufacturer or authorized distributors?
All KBJ606G 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 KBJ606G meets industry standards.
7.What is the process for return or replacement of KBJ606G?
All KBJ606G units undergo pre-shipment inspection (PSI). If there is an issue with KBJ606G, 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 KBJ606G part is unused and in its original packaging.
Return procedure for KBJ606G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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