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GeneSiC Semiconductor KBJ4005G
- Part No.:
- KBJ4005G
- Manufacturer:
- GeneSiC Semiconductor
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ4005G.pdf
- Description:
- BRIDGE RECT 1PHASE 50V 4A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:7,871
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Product details
Overview
KBJ4005G from Diodes Incorporated is a 4.0A, 50V standard recovery bridge rectifier in a KBJ through-hole package, featuring 1.0V max forward voltage at 2.0A, 5.0µA max reverse leakage at 25°C, 1500VRMS dielectric strength, and 120A peak surge rating-used for AC-to-DC conversion in offline power supplies and industrial control power stages.
For engineers reviewing the KBJ4005G datasheet, KBJ4005G pinout, KBJ4005G application, or KBJ4005G equivalent, key selection criteria include its 50V VRRM rating, thermal resistance of 5.5°C/W (junction-to-case), glass-passivated die construction, UL recognition (E95060), and RoHS-compliant tin-plated leads suitable for PCB mounting with #6 screw.
Technical Context
This single-phase full-wave bridge rectifier integrates four silicon diodes in a common molded plastic (UL 94V-0) KBJ package with polarity marked on the body. It operates across -55°C to +150°C junction temperature and delivers 4.0A average output current when heatsinked per specification.
The device exhibits standard recovery behavior (no soft-recovery or fast-recovery optimization), with 40pF typical junction capacitance at 1MHz/4V reverse bias and I²t fusing rating of 60A²s for 8.3ms half-sine surges-enabling robust handling of line transients in non-switching or low-frequency rectification circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive peak reverse voltage; defines safe AC input voltage limit before breakdown. |
| IF(AV) | 4.0 A - Average rectified output current with heatsink; sets continuous DC load capability in linear power supplies. |
| VF Max | 1.0 V @ 2.0A - Forward voltage drop; determines conduction loss (2.0W max at rated current) and thermal design margin. |
| IR Max | 5.0 µA @ 25°C - Reverse leakage current; ensures minimal standby power loss and stable blocking in high-impedance circuits. |
| IFSM | 120 A - Peak forward surge current (8.3ms); supports inrush tolerance during cold-start of transformer-based supplies. |
| RθJC | 5.5 °C/W - Junction-to-case thermal resistance; enables heatsink sizing using 75mm × 75mm × 1.6mm Al plate reference. |
| VRMS | 35 V - Maximum RMS input voltage; correlates directly to 50V VRRM for sinusoidal AC waveform derating. |
Pinout & Package
Package: KBJ molded plastic case (UL 94V-0), through-hole mountable with #6 screw, tin-plated leads, 4.6g 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 in full-wave bridge configuration. |
| ~AC2 | AC Input Terminal 2 | Second leg of AC input; completes AC path for full-wave rectification with ~AC1. |
| +DC | Positive DC Output | Anode-side output node; delivers pulsating positive DC to filter capacitor and regulator stage. |
| -DC | Negative DC Output / Common Return | Cathode-side return path; serves as circuit ground reference for downstream DC loads. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or industrial environments. |
| 1500VRMS dielectric strength | Ensures isolation safety between AC input and DC output sides under transient overvoltage conditions. |
| UL Recognized Component (E95060) | Validates compliance with safety standards for end-equipment certification in North America. |
| Lead-free & RoHS compliant | Meets EU directives 2011/65/EU and 2015/863/EU; supports environmentally regulated manufacturing. |
| 120A surge rating | Withstands brief inrush currents without degradation-critical for transformer-coupled unregulated supplies. |
Applications
| Industrial Power Supplies | Appliance Control Boards |
|---|---|
Use Scenario: Rectifying 24–48VAC control transformer output in PLC I/O modules and motor drive logic power rails. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting low-voltage AC to unregulated DC for linear regulators and optocoupler biasing. Use Value: 4.0A IF(AV) and 120A IFSM support intermittent relay coil energization and solenoid switching without thermal runaway. | Use Scenario: Converting 12–24VAC from appliance door interlock transformers into DC for microcontroller and display power. IC Role / Device Role / Timing Role: Primary AC/DC conversion stage feeding bulk capacitors and 5V/3.3V LDOs in white goods control boards. Use Value: Low 5.0µA IR at 25°C minimizes standby power draw and extends battery backup runtime in smart appliance modes. |
| LED Driver Auxiliary Supplies | Legacy HVAC Control Panels |
Use Scenario: Generating isolated low-power DC for LED driver IC bias and feedback circuitry in constant-current lighting systems. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or forward converter auxiliary windings. Use Value: 50V VRRM matches typical auxiliary winding voltages; 1.0V VF ensures efficient low-current operation with minimal heat generation. | Use Scenario: Rectifying 24VAC thermostat wiring into DC for analog sensor conditioning and relay driver circuits. IC Role / Device Role / Timing Role: Non-isolated bridge rectifier in legacy HVAC zone controllers with mechanical relays and thermistor interfaces. Use Value: UL E95060 recognition simplifies end-product safety approvals; through-hole KBJ package enables serviceable field replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4A | Same 4.0A/50V rating, GBU package (larger footprint, higher RθJC ≈ 7.0°C/W). | Requires larger PCB area; less thermally efficient without heatsink. | Prefer when existing layout accommodates GBU outline and no heatsink is used. |
| KBU4A | Identical KBJ package, same electrical specs, but obsolete per Diodes' PDN-2023-017. | No active supply chain; not recommended for new designs. | Select KBJ4005G for guaranteed availability and RoHS compliance. |
Compared with GBU4A and KBU4A, KBJ4005G offers superior thermal performance (5.5°C/W vs. 7.0°C/W), modern RoHS compliance, and active production status-making it optimal for new industrial and appliance designs requiring long-term component continuity.
Availability
KBJ4005G is available at Aetrix Electronics and suitable for industrial power supplies, appliance control boards, LED driver auxiliary supplies, and legacy HVAC control panels requiring stable component supply, UL recognition, and RoHS compliance.
Supply support for KBJ4005G 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, serving industrial, computing, consumer, and communications markets.
KBJ4005G belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, reliable AC/DC conversion in non-high-frequency power applications where thermal robustness and safety certification are prioritized over ultra-fast switching.
FAQ
What is the maximum operating temperature for KBJ4005G?
KBJ4005G has a specified junction temperature range of -55°C to +150°C. Its thermal resistance is 5.5°C/W (junction-to-case), so sustained operation at 150°C requires proper heatsinking per the 75mm × 75mm × 1.6mm aluminum plate reference condition in the datasheet.
Is KBJ4005G suitable for use without a heatsink?
KBJ4005G can operate without an external heatsink at reduced current levels-typically ≤1.5A average-depending on ambient temperature and PCB copper area. At full 4.0A rating, the datasheet mandates mounting on the specified 75mm × 75mm × 1.6mm aluminum heatsink to maintain TJ ≤150°C.
Does KBJ4005G meet automotive qualification standards?
KBJ4005G is not AEC-Q101 qualified. Diodes states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing-contact their automotive team for qualified alternatives like the KBJ4005G-AU series if automotive use is required.
How does the 1500VRMS dielectric strength impact system-level safety?
The 1500VRMS isolation rating certifies safe insulation between AC input terminals and DC output terminals under transient overvoltage conditions per UL/IEC standards. This enables direct use in Class II (double-insulated) power supplies without additional creepage/clearance barriers on the PCB.
KBJ4005G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- GeneSiC Semiconductor
- Series:
- -
- Package/Case:
- 4-SIP, KBJ
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 50 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 4 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ4005G FAQ
1.How can I place an order for KBJ4005G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ4005G 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 KBJ4005G reliable?
The price and inventory of KBJ4005G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ4005G is usually 5 days.
3.What payment methods are accepted for KBJ4005G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ4005G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ4005G?
KBJ4005G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ4005G 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 KBJ4005G?
For technical support, including KBJ4005G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ4005G requirements.
6.How does Aetrix verify that KBJ4005G is sourced from the original manufacturer or authorized distributors?
All KBJ4005G 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 KBJ4005G meets industry standards.
7.What is the process for return or replacement of KBJ4005G?
All KBJ4005G units undergo pre-shipment inspection (PSI). If there is an issue with KBJ4005G, 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 KBJ4005G part is unused and in its original packaging.
Return procedure for KBJ4005G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJ4005G Tags
-
HDS10M-13
Diodes Incorporated
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MB10S-13
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CD-MBL210S
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BAS3007ARPPE6327HTSA1
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DF02M
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CD-MBL210SL
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DF04M
Diodes Incorporated
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DF01M
Diodes Incorporated
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