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Diodes Incorporated KBJL406-TU
- Part No.:
- KBJL406-TU
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJL
- Datasheet:
-
KBJL406-TU.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 4A KBJL
- Quantity:
- Payment:
- Shipping:
Inventory:5,415
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Product details
Overview
KBJL406-TU from Diodes Incorporated is a 4A standard recovery bridge rectifier in KBJL package, rated for 600V repetitive peak reverse voltage, 1.0V max forward voltage at 2A, and 10µA max reverse leakage at 25°C. It delivers high surge current capability (120A @ 8.3ms) and is optimized for TV, game console, and PC power supply front-end AC-DC conversion.
For engineers reviewing the KBJL406-TU datasheet, KBJL406-TU pinout, KBJL406-TU application, or KBJL406-TU equivalent, key selection criteria include VRRM rating, thermal resistance without heatsink (24°C/W), IFSM surge tolerance, junction capacitance (40pF), and RoHS-compliant green molding compound compliance.
Technical Context
This device integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated die construction, enabling stable operation across -55°C to +150°C junction temperature range. Its standard recovery characteristic (non-fast/soft recovery) suits general-purpose line-frequency rectification where EMI constraints are moderate.
The KBJL406-TU uses matte tin-plated leads solderable per MIL-STD-202 Method 208 and mounts directly to PCBs without discrete heatsinking for ≤2.7A average current. Thermal resistance junction-to-ambient is 24°C/W without heatsink and 11°C/W with a 35mm × 35mm × 1.7mm copper heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage before breakdown; defines safe AC input voltage headroom (e.g., 230VAC RMS → ~325V peak). |
| IF(AV) | 4 A (with heatsink), 2.7 A (no heatsink) - Continuous DC output current capability under specified thermal conditions. |
| VF Max | 1.0 V @ 2A, 25°C - Forward conduction loss impacting efficiency and thermal rise in linearly loaded supplies. |
| IR Max | 10 µA @ 600V, 25°C - Reverse leakage defining off-state power loss and reliability in high-impedance hold-up circuits. |
| IFSM | 120 A @ 8.3ms - Single half-sine surge rating determining robustness against inrush and line transients. |
| RθJA | 24 °C/W - Junction-to-ambient thermal resistance without heatsink; sets maximum ambient temperature for safe 2.7A operation. |
| CT | 40 pF @ 1MHz, 4V - Junction capacitance influencing high-frequency noise coupling and snubber design. |
Pinout & Package
Package: KBJL - Molded plastic, UL 94V-0 rated, 2.4g weight, with matte tin-plated leads. Dimensions: 25.0mm × 10.3mm × 14.9mm (L × E1 × L), 4-pin single-in-line (SIP) layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One of two alternating-current input nodes; connects to live/neutral side of transformer secondary or EMI filter output. |
| ~AC2 | AC Input Terminal 2 | Second AC input node; completes full-wave bridge input path with ~AC1. |
| +DC | Positive DC Output | Full-wave rectified positive output node; feeds bulk capacitor or downstream regulator. |
| -DC | Negative DC Output / Common Return | Full-wave rectified negative output node; serves as circuit ground reference and return path. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivation | Enhances die surface stability and long-term reliability under humid or thermally cycling environments. |
| UL Recognized Component | E95060 file listing confirms safety compliance for end-equipment certification (e.g., UL 62368-1). |
| Lead-free & Halogen-free | RoHS 3 compliant with <900ppm Br/Cl and <1000ppm Sb; meets automotive and consumer green material mandates. |
| High surge current rating | 120A non-repetitive surge withstand enables reliable startup in unregulated offline power supplies. |
Applications
| TV Power Supply | Game Console Power |
|---|---|
Use Scenario: AC-DC front-end rectification in 100–300W switch-mode power supplies for flat-panel TVs. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 100–240VAC mains to pulsating DC prior to PFC and main DC-DC stage. Use Value: 600V VRRM provides margin above 240VAC peak (340V); 2.7A no-heatsink rating supports compact board layouts. | Use Scenario: Primary-side rectification in multi-rail gaming PSU designs with high transient load demands. IC Role / Device Role / Timing Role: Unregulated DC bus generation feeding active PFC and resonant LLC controllers. Use Value: 120A IFSM handles cold-start inrush into large bulk capacitors without degradation. |
| PC ATX Power Supply | Industrial Auxiliary Power |
Use Scenario: Secondary-side rectification in +12V/+5V standby and main power rails of desktop PC PSUs. IC Role / Device Role / Timing Role: Standard-recovery bridge delivering low-cost, thermally stable DC output for legacy linear regulators or PWM controllers. Use Value: 24°C/W RθJA allows direct PCB mounting in space-constrained auxiliary sections without added heatsink mass. | Use Scenario: Mains-fed auxiliary power for PLC I/O modules, motor drives, and industrial HMIs. IC Role / Device Role / Timing Role: Isolated AC-DC conversion stage powering control logic, sensors, and communication interfaces. Use Value: -55°C to +150°C operating range ensures functionality in wide-temperature enclosures without derating penalties. |
Availability
KBJL406-TU is available at Aetrix Electronics and suitable for TV power supplies, game console power systems, and PC ATX auxiliary rails requiring stable component supply, RoHS-compliant packaging, and UL-recognized safety certification.
Supply support for KBJL406-TU 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 North America.
The KBJL series belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-sensitive, high-volume AC-DC front-end applications in consumer and industrial power supplies.
FAQ
What is the maximum junction temperature for continuous operation?
The KBJL406-TU supports continuous operation from -55°C to +150°C junction temperature. Derating begins at +125°C case temperature, where average forward current drops to 2.7A without heatsink and remains at 4A with heatsink per datasheet Figure 1.
Is KBJL406-TU pin-compatible with other KBJL-series rectifiers?
Yes - all KBJL-series devices (KBJL406 through KBJL410) share identical KBJL package dimensions, lead pitch, and 4-pin terminal assignment (~AC1, ~AC2, +DC, -DC). Only VRRM and related surge ratings differ between variants.
Does KBJL406-TU require a heatsink for 4A operation?
Yes - 4A average current is only rated with a 35mm × 35mm × 1.7mm copper heatsink. Without heatsink, the maximum continuous current is 2.7A at TC = +125°C, as defined in the Absolute Maximum Ratings table.
What does "Green" mean in the KBJL406-TU marking?
"Green" indicates Diodes' halogen- and antimony-free qualification: <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony compounds - meeting IPC-1752A Class 3 material declarations for environmental compliance.
KBJL406-TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, KBJL
- 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:
- 10 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJL
KBJL406-TU FAQ
1.How can I place an order for KBJL406-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJL406-TU 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 KBJL406-TU reliable?
The price and inventory of KBJL406-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJL406-TU is usually 5 days.
3.What payment methods are accepted for KBJL406-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJL406-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJL406-TU?
KBJL406-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJL406-TU 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 KBJL406-TU?
For technical support, including KBJL406-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJL406-TU requirements.
6.How does Aetrix verify that KBJL406-TU is sourced from the original manufacturer or authorized distributors?
All KBJL406-TU 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 KBJL406-TU meets industry standards.
7.What is the process for return or replacement of KBJL406-TU?
All KBJL406-TU units undergo pre-shipment inspection (PSI). If there is an issue with KBJL406-TU, 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 KBJL406-TU part is unused and in its original packaging.
Return procedure for KBJL406-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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