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Diodes Incorporated KBJ1008G-TU
- Part No.:
- KBJ1008G-TU
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ1008G-TU.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 10A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:3,890
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Product details
Overview
KBJ1008G-TU from Diodes Incorporated is a 10A standard recovery bridge rectifier with 800V peak repetitive reverse voltage (VRRM), 1.1V max forward voltage at 5.0A, and 5µA max reverse leakage at 25°C. It features glass-passivated die construction, UL 94V-0 plastic package, and is designed for AC/DC power conversion in industrial power supplies and motor control circuits.
For engineers reviewing the KBJ1008G-TU datasheet, KBJ1008G-TU pinout, KBJ1008G-TU application, or KBJ1008G-TU equivalent, key selection criteria include VRRM rating, thermal resistance (2.0°C/W), surge current capability (170A IFSM), and PCB-mount compatibility in KBJ package.
Technical Context
This single-phase full-wave bridge rectifier converts AC input to pulsating DC using four series-connected diodes in a monolithic molded package. Its standard recovery characteristic (trr not specified, typical for non-fast-recovery bridges) supports line-frequency operation up to 60Hz with minimal switching loss trade-off.
Thermal performance is defined by junction-to-case resistance of 2.0°C/W when mounted on a 150mm × 150mm × 1.6mm copper heatsink. Derating curves confirm 10A average forward current at TC = +110°C with heatsink, dropping to 3.0A without heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage the device blocks reliably in AC line applications |
| IF(AV) | 10 A @ TC = +110°C with heatsink - Sustained DC output current capability under thermal management |
| VF Max | 1.1 V @ IF = 5.0A - Forward conduction loss impacting efficiency and thermal rise in power stage |
| IR Max | 5 µA @ VR = 800V, TJ = +25°C - Reverse leakage defining off-state power loss and insulation integrity |
| IFSM | 170 A (8.3ms half-sine) - Surge current handling for inrush and fault conditions without failure |
| RθJC | 2.0 °C/W - Thermal path efficiency from junction to case, critical for heatsink sizing and reliability |
| CJ | 45 pF @ 1MHz, 4V - Junction capacitance affecting high-frequency noise coupling and EMI behavior |
Pinout & Package
Package: KBJ - 4-terminal molded plastic bridge rectifier package with integrated heat-conducting metal baseplate; UL 94V-0 rated, matte tin-plated leads, weight ≈ 4.6 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One leg of AC input; connected internally to anode of D1 and cathode of D2 |
| AC2 | Input AC terminal 2 | Second leg of AC input; connected internally to cathode of D1 and anode of D2 |
| + (Anode) | Positive DC output | Common cathode node of D1 and D3; delivers rectified positive output |
| – (Cathode) | Negative DC output | Common anode node of D2 and D4; serves as return/ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enhanced moisture and contamination resistance for long-term reliability in humid or dusty environments |
| UL Recognized (E95060) | Compliance with safety standards for end-equipment certification in industrial and consumer applications |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb - required for global market access |
| 1000V PRV rating option available | Same package supports 600V/800V/1000V variants (KBJ1006G/KBJ1008G/KBJ1010G), enabling BOM consolidation |
Applications
| Industrial Power Supply | Motor Drive Front-End |
|---|---|
Use Scenario: AC mains input rectification in 100–240VAC switch-mode power supplies for PLCs and HMIs. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus. Use Value: 10A IF(AV) and 170A IFSM support high-power startup surges and continuous operation at 50/60Hz. | Use Scenario: Input stage of 3-phase inverter drives where single-phase auxiliary supply is derived. IC Role / Device Role / Timing Role: Discrete bridge rectifier providing isolated DC bias for gate drivers and control logic. Use Value: 2.0°C/W RθJC enables compact heatsinking in space-constrained drive enclosures. |
| LED Driver Power Stage | Appliance Control Board |
Use Scenario: Rectification in constant-voltage LED drivers for commercial lighting systems. IC Role / Device Role / Timing Role: Primary AC/DC conversion element feeding bulk capacitor and downstream DC/DC stage. Use Value: 1.1V VF ensures low conduction loss at 5A operating point, minimizing thermal stress on PCB layout. | Use Scenario: Mains-powered control boards in washing machines, refrigerators, and HVAC units. IC Role / Device Role / Timing Role: Standard recovery bridge supplying low-noise DC for microcontroller and sensor subsystems. Use Value: UL 94V-0 package and RoHS/Green compliance meet global appliance safety and environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K-E3/51 | 800V VRRM, 8A IF(AV), TO-220AC package, RθJC = 2.5°C/W | Lower current rating; requires larger heatsink for same 10A thermal load | Select when footprint flexibility allows TO-220 and lower cost is prioritized over current density |
| KBPC108 | 800V VRRM, 10A IF(AV), KBPC package (larger than KBJ), RθJC ≈ 2.3°C/W | Bulkier through-hole footprint; higher mounting torque requirement | Choose for legacy board compatibility where KBJ footprint is unavailable |
Compared with GBU8K-E3/51 and KBPC108, KBJ1008G-TU delivers higher current density in a smaller KBJ outline, better thermal resistance, and tighter leakage specification-making it optimal for modern compact industrial power designs requiring 10A sustained output.
Availability
KBJ1008G-TU is available at Aetrix Electronics and suitable for industrial power supplies, motor drive front-ends, and appliance control boards requiring stable component supply and long-lifecycle availability.
Supply support for KBJ1008G-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.
KBJ1008G-TU belongs to Diodes' standard bridge rectifier product line, engineered for cost-sensitive, high-volume AC/DC conversion in industrial, consumer, and automotive-qualified power systems.
FAQ
What is the maximum operating temperature for KBJ1008G-TU?
The KBJ1008G-TU has a junction operating temperature range of –55°C to +150°C. Its derating curve shows 10A average forward current is maintained only when case temperature remains ≤ +110°C with proper heatsinking; above that, current must be reduced linearly per Figure 1 in DS43641.
Is KBJ1008G-TU suitable for high-frequency switching applications?
No - KBJ1008G-TU is a standard recovery bridge rectifier with no specified reverse recovery time (trr). It is optimized for 50/60Hz line-frequency rectification, not high-frequency SMPS. For >20kHz operation, fast- or ultrafast-recovery alternatives like GBU10K or DF08S are recommended.
Does KBJ1008G-TU require a heatsink for 10A operation?
Yes - the datasheet specifies 10A IF(AV) only at TC = +110°C with heatsink. Without heatsink, the rating drops to 3.0A. Mounting on a 150mm × 150mm × 1.6mm copper plate achieves the stated RθJC of 2.0°C/W; smaller heatsinks require current derating per Figure 1.
How is polarity marked on the KBJ1008G-TU package?
Polarity is marked on the body: the "+" symbol identifies the positive DC output terminal, "–" marks the negative DC output terminal, and the two unmarked terminals are the AC inputs. The marking conforms to industry-standard bridge rectifier orientation and is visible on the top surface of the KBJ package.
KBJ1008G-TU 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):
- 10 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 5 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ1008G-TU FAQ
1.How can I place an order for KBJ1008G-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ1008G-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 KBJ1008G-TU reliable?
The price and inventory of KBJ1008G-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ1008G-TU is usually 5 days.
3.What payment methods are accepted for KBJ1008G-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ1008G-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ1008G-TU?
KBJ1008G-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ1008G-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 KBJ1008G-TU?
For technical support, including KBJ1008G-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ1008G-TU requirements.
6.How does Aetrix verify that KBJ1008G-TU is sourced from the original manufacturer or authorized distributors?
All KBJ1008G-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 KBJ1008G-TU meets industry standards.
7.What is the process for return or replacement of KBJ1008G-TU?
All KBJ1008G-TU units undergo pre-shipment inspection (PSI). If there is an issue with KBJ1008G-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 KBJ1008G-TU part is unused and in its original packaging.
Return procedure for KBJ1008G-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJ1008G-TU Tags
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