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Diodes Incorporated KBJ608G
- Part No.:
- KBJ608G
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ608G.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 6A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:19
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Product details
Overview
KBJ608G from Diodes Incorporated is a 6.0A, 800V peak repetitive reverse voltage standard recovery bridge rectifier in KBJ through-hole package, with 1.0V forward voltage at 3.0A per element and 5.0µA reverse leakage at 25°C, used in AC/DC power supplies for industrial motor drives and HVAC control systems.
For engineers reviewing the KBJ608G datasheet, KBJ608G pinout, KBJ608G application, or KBJ608G equivalent, key selection criteria include its 170A non-repetitive surge rating, 1.5°C/W junction-to-case thermal resistance, UL recognition (E95060), and compatibility with PCB mounting via #6 screw.
Technical Context
This single-phase, full-wave bridge rectifier uses glass-passivated silicon die to achieve stable reverse blocking up to 800V DC and low conduction loss. Its 170A surge capability supports brief inrush events in transformer-coupled supplies.
The device operates across –55°C to +150°C junction temperature range and delivers 6.0A average output current when case temperature is maintained at 110°C, requiring heatsinking per the 75mm × 75mm × 1.6mm aluminum plate reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage the bridge withstands without breakdown |
| IO @ TC=110°C | 6.0 A - Continuous average rectified output current with proper heatsinking |
| VF @ IF=3A | 1.0 V - Forward voltage drop per diode element, defining conduction loss at rated load |
| IR @ 25°C | 5.0 µA - Reverse leakage current at rated DC blocking voltage, indicating low standby power loss |
| IFSM | 170 A - Peak non-repetitive surge current tolerance for 8.3ms half-sine wave |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case, critical for heatsink sizing |
| CT @ 1MHz | 80 pF - Total capacitance per element, affecting high-frequency noise coupling |
Pinout & Package
Package: KBJ molded plastic housing (UL 94V-0), through-hole mountable with #6 screw, 4.3g weight, bright tin-plated leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One of two alternating-current input connections to internal bridge |
| AC2 | Input AC terminal 2 | Second AC input connection; polarity not marked on body but defined by internal topology |
| + (Anode) | Positive DC output | Full-wave rectified positive output node, internally connected to anode of two diodes |
| – (Cathode) | Negative DC output | Full-wave rectified negative output node, internally connected to cathode of two diodes |
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 safe isolation between AC inputs and DC outputs under transient overvoltage conditions |
| UL Recognized Component (E95060) | Validates compliance with safety standards for end-equipment certification in North America |
| Lead-free, RoHS-compliant finish | Meets EU Directive 2015/863/EU requirements for hazardous substance restriction |
| 170A surge rating | Supports reliable operation during cold-start inrush into capacitive-input power supplies |
Applications
| Industrial Motor Drives | HVAC Control Systems |
|---|---|
Use Scenario: Rectifying 240VAC line input to DC bus for variable frequency drive front-end stages. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC mains to unregulated DC with minimal conduction loss. Use Value: 6.0A continuous rating and 170A surge capacity handle motor startup transients without thermal runaway. | Use Scenario: Converting 120VAC auxiliary supply to DC for microcontroller and relay driver circuits in rooftop units. IC Role / Device Role / Timing Role: Standard recovery bridge providing isolated, low-leakage DC power for control logic. Use Value: 5.0µA reverse leakage at 25°C minimizes standby power draw in always-on HVAC controllers. |
| AC/DC Power Supplies | Industrial Lighting Ballasts |
Use Scenario: Input-stage rectification in open-frame 60W–120W industrial power supplies with transformer isolation. IC Role / Device Role / Timing Role: Primary-side bridge rectifier delivering DC to bulk capacitor and downstream switching stage. Use Value: 1.0V VF at 3A ensures <1.8W conduction loss per element, supporting >85% efficiency targets. | Use Scenario: Rectifying 277VAC line voltage in commercial LED driver modules for high-bay lighting. IC Role / Device Role / Timing Role: High-voltage bridge handling sustained 277VAC input with margin against line surges. Use Value: 800V VRRM provides 2.9× safety margin over 277VAC RMS, reducing field failure risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBJ608 | Same 800V VRRM and 6.0A IO, but lower IFSM (120A vs. 170A) and higher VF (1.1V) | Suitable for lower-surge applications where cost sensitivity outweighs surge margin | Select GBJ608 only if system-level inrush is limited and thermal design accommodates higher conduction loss |
| W08M | 800V VRRM, 1.5A IO (not 6.0A); smaller DO-15 package, no screw-mount provision | Only viable for low-power signal or auxiliary supplies, not main power conversion | Reject W08M for any application requiring ≥4A continuous output; insufficient current rating and thermal mass |
Compared with GBJ608 and W08M, KBJ608G uniquely combines 6.0A current handling, 170A surge robustness, and mechanical stability via screw-mount-making it irreplaceable in high-reliability industrial power front-ends.
Availability
KBJ608G is available at Aetrix Electronics and suitable for industrial motor drives, HVAC control systems, and AC/DC power supplies requiring stable component supply, long-lifecycle support, and UL-recognized safety compliance.
Supply support for KBJ608G 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 automotive markets.
The KBJ series is designed specifically for high-current, high-reliability AC/DC front-end rectification in harsh-environment industrial equipment, emphasizing mechanical robustness, safety certification, and thermal performance.
FAQ
What is the maximum operating temperature for KBJ608G?
KBJ608G has a specified operating junction temperature range of –55°C to +150°C. Its 6.0A average current rating assumes case temperature is held at +110°C, requiring external heatsinking per the 1.5°C/W RθJC specification and the recommended 75mm × 75mm × 1.6mm aluminum plate.
Is KBJ608G suitable for capacitive-input filter designs?
No-capacitive-input filters require derating KBJ608G's average current by 20% per the datasheet. Its standard recovery characteristic makes it appropriate for inductive or resistive loads; fast-recovery alternatives are preferred for high-ripple, low-ESR capacitor inputs.
Does KBJ608G have automotive qualification?
KBJ608G itself is not AEC-Q101 qualified. Diodes offers automotive-grade variants (e.g., KBJ608G-A) with PPAP capability and IATF 16949 manufacturing, but standard KBJ608G is intended for industrial and commercial applications unless explicitly specified otherwise.
How is polarity identified on the KBJ608G package?
Polarity is molded directly onto the plastic body: "+" and "–" markings indicate the DC output terminals, while "~" symbols (or absence of polarity marks) identify the two AC input terminals. The physical layout follows standard KBJ pinout: AC1, AC2, +, –, reading left-to-right with the marking side facing up.
KBJ608G 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):
- 800 V
- Current - Average Rectified (Io):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ608G FAQ
1.How can I place an order for KBJ608G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ608G 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 KBJ608G reliable?
The price and inventory of KBJ608G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ608G is usually 5 days.
3.What payment methods are accepted for KBJ608G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ608G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ608G?
KBJ608G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ608G 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 KBJ608G?
For technical support, including KBJ608G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ608G requirements.
6.How does Aetrix verify that KBJ608G is sourced from the original manufacturer or authorized distributors?
All KBJ608G 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 KBJ608G meets industry standards.
7.What is the process for return or replacement of KBJ608G?
All KBJ608G units undergo pre-shipment inspection (PSI). If there is an issue with KBJ608G, 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 KBJ608G part is unused and in its original packaging.
Return procedure for KBJ608G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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