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Diodes Incorporated KBJ402G
- Part No.:
- KBJ402G
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ402G.pdf
- Description:
- BRIDGE RECT 1PHASE 200V 4A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:10
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Product details
Overview
KBJ402G from Diodes Incorporated is a 4.0A, 200V 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, and 120A peak surge capability - used for AC/DC conversion in offline power supplies and industrial motor controls.
For engineers reviewing the KBJ402G datasheet, KBJ402G pinout, KBJ402G application, or KBJ402G equivalent, this page delivers verified electrical ratings, thermal resistance (5.5°C/W), junction capacitance (40pF), mounting torque limit (5.0 in-lbs), and UL recognition status (E95060) to support reliable high-current rectification design.
Technical Context
This single-phase full-wave bridge rectifier integrates four silicon diodes in a common molded plastic (UL 94V-0) case with tin-plated leads. It operates across -55°C to +150°C junction temperature and supports PCB mounting via #6 screw with defined mechanical torque limits.
The device delivers 4.0A average output current when heatsinked (75mm × 75mm × 1.6mm Al plate), exhibits 1500VRMS dielectric strength between case and terminals, and maintains low IR (5.0µA @ 25°C, 500µA @ 125°C) under rated VRRM = 200V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage the bridge withstands without breakdown during AC line cycling. |
| IF(AV) | 4.0 A - Average DC output current sustainable with proper heatsinking at TJ = +150°C. |
| VF Max | 1.0 V @ 2.0A - Forward voltage drop per diode pair, directly impacting conduction loss and thermal load. |
| IR Max | 5.0 µA @ 25°C - Reverse leakage current limiting standby power loss and ensuring stable blocking in high-impedance circuits. |
| IFSM | 120 A - Peak non-repetitive surge current handling capability for inrush and transient protection. |
| RθJC | 5.5 °C/W - Junction-to-case thermal resistance enabling accurate heatsink sizing for thermal management. |
| CT | 40 pF - Junction capacitance affecting high-frequency noise coupling and EMI filter design. |
Pinout & Package
Package: KBJ molded plastic housing with tin-plated through-hole leads; polarity marked on body; designed for #6 screw mounting with 5.0 in-lbs max torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One of two AC input nodes; connects to live or neutral leg of transformer secondary. |
| AC2 | Input AC terminal 2 | Second AC input node; completes full-wave bridge input path with AC1. |
| + (Anode) | Positive DC output | Full-wave rectified positive output node; feeds bulk capacitor or downstream regulator. |
| – (Cathode) | Negative DC output | Full-wave rectified negative/return node; forms DC ground reference for output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or industrial environments. |
| 1500VRMS dielectric strength | Ensures safe isolation between case and internal terminals under high-voltage transients. |
| UL Recognized (E95060) | Validates compliance with safety standards for end-equipment certification in North America. |
| Lead-free & RoHS compliant | Meets EU Directive 2015/863/EU requirements for environmentally restricted substances. |
| 120A surge rating | Withstands transformer inrush and lightning-induced surges without failure in AC mains interfaces. |
Applications
| Industrial Motor Drives | Offline Switch-Mode Power Supplies |
|---|---|
Use Scenario: Rectifying 50/60Hz AC from control transformer to DC bus for IGBT gate drivers and logic supply. IC Role / Device Role / Timing Role: Bridge rectifier providing isolated, regulated DC bias for drive circuitry. Use Value: Low VF (1.0V) minimizes heat generation in space-constrained control boards; 120A surge rating absorbs motor startup transients. | Use Scenario: Converting universal AC input (85–265VAC) to high-voltage DC for PFC and main DC-DC stages. IC Role / Device Role / Timing Role: Primary AC/DC conversion element before active power factor correction. Use Value: 200V VRRM safely handles 265VAC peaks with margin; UL recognition simplifies end-product safety approvals. |
| LED Streetlight Drivers | Industrial PLC Power Modules |
Use Scenario: Rectifying AC line to DC for constant-current LED driver ICs in outdoor lighting enclosures. IC Role / Device Role / Timing Role: Input-stage bridge delivering stable DC to buck/boost LED controllers. Use Value: 1500VRMS isolation prevents creepage/clearance failures in wet-location housings; -55°C to +150°C rating ensures outdoor reliability. | Use Scenario: Providing auxiliary 24VDC rail from AC mains for PLC I/O and communication modules. IC Role / Device Role / Timing Role: Compact, screw-mounted rectifier integrated into DIN-rail power supply PCBs. Use Value: KBJ package enables robust mechanical mounting; 4.0A IF(AV) supports multiple downstream rails with headroom. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K | Same 4.0A/200V rating but GBU package (larger footprint, higher RθJC = 7.0°C/W). | Less suitable for compact PCBs; requires larger heatsink area for same thermal performance. | Select when existing layout uses GBU footprint or higher surge margin (140A) is required. |
| W04G | Lower 1.5A IF(AV), smaller WOG package, VF = 1.1V, IR = 10µA - not a direct replacement. | Only appropriate for low-power auxiliary supplies (<15W), not main DC bus rectification. | Choose only for cost-sensitive, low-current designs where thermal derating is acceptable. |
Compared with GBU4K and W04G, KBJ402G offers optimal balance of thermal efficiency (5.5°C/W), compact KBJ footprint, and UL recognition - making it preferred for industrial-grade 4A rectification where board space and safety certification matter.
Availability
KBJ402G is available at Aetrix Electronics and suitable for industrial motor drives, offline switch-mode power supplies, and LED streetlight drivers requiring stable component supply and long-term manufacturability.
Supply support for KBJ402G 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 and signal integrity solutions.
The KBJ series targets cost-effective, high-surge-capability bridge rectifiers for industrial and consumer AC/DC front-ends, emphasizing mechanical robustness, safety certification, and thermal performance in through-hole form factors.
FAQ
What is the maximum operating temperature for KBJ402G?
KBJ402G has a specified junction temperature range of -55°C to +150°C. Its 4.0A average current rating assumes operation at TJ = +150°C with appropriate heatsinking (75mm × 75mm × 1.6mm aluminum plate). Ambient temperature must be derated accordingly based on RθJC = 5.5°C/W and system-level thermal resistance.
Is KBJ402G suitable for automotive applications?
KBJ402G is not AEC-Q101 qualified and lacks PPAP documentation or IATF 16949 manufacturing evidence in its public datasheet. While it meets RoHS and UL requirements, Diodes explicitly states that automotive use requires direct engagement with their representatives for change-controlled, qualified variants - making standard KBJ402G unsuitable for safety-critical vehicle systems.
How does the KBJ package differ from KBPC or GBU packages?
The KBJ package is a 4-pin, insulated, rectangular molded plastic case with screw-mount capability (for #6 screw) and 5.0 in-lbs torque limit. Unlike KBPC (larger, no screw mount) or GBU (flat-base, no mounting hole), KBJ provides mechanical stability for high-vibration environments and simplified heatsinking via direct case contact.
Can KBJ402G replace KBJ401G in an existing design?
Yes - KBJ402G (200V VRRM) is a direct upgrade from KBJ401G (100V VRRM) with identical package, pinout, thermal characteristics, and electrical behavior below 100V. The higher voltage rating adds margin for line surges and universal-input designs, with no layout or thermal changes required.
KBJ402G 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):
- 200 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ402G FAQ
1.How can I place an order for KBJ402G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ402G 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 KBJ402G reliable?
The price and inventory of KBJ402G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ402G is usually 5 days.
3.What payment methods are accepted for KBJ402G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ402G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ402G?
KBJ402G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ402G 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 KBJ402G?
For technical support, including KBJ402G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ402G requirements.
6.How does Aetrix verify that KBJ402G is sourced from the original manufacturer or authorized distributors?
All KBJ402G 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 KBJ402G meets industry standards.
7.What is the process for return or replacement of KBJ402G?
All KBJ402G units undergo pre-shipment inspection (PSI). If there is an issue with KBJ402G, 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 KBJ402G part is unused and in its original packaging.
Return procedure for KBJ402G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJ402G Tags
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