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Diodes Incorporated KBJ3510
- Part No.:
- KBJ3510
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJ
- Datasheet:
-
KBJ3510.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 35A KBJ
- Quantity:
- Payment:
- Shipping:
Inventory:6,241
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Product details
Overview
KBJ3510 from Diodes Incorporated is a 35A standard recovery bridge rectifier in KBJ package, rated for 1000V peak reverse voltage (VRRM), 1.05V max forward voltage at 17.5A, and 10µA max reverse leakage at 25°C. It serves as AC-to-DC conversion core in high-current off-line power supplies for TV, PC, and gaming systems.
For engineers reviewing the KBJ3510 datasheet, KBJ3510 pinout, KBJ3510 application, or KBJ3510 equivalent, this part supports thermally demanding board-level rectification where stable 35A average current handling, 1000V isolation margin, and RoHS-compliant green packaging are required.
Technical Context
This single-phase full-wave bridge rectifier uses glass-passivated silicon die to achieve standard recovery characteristics (trr not specified but typical for standard recovery bridges >500ns), enabling cost-effective operation in 50/60Hz line-frequency applications without snubber requirements. Its thermal resistance junction-to-case is 1°C/W with heatsink mounting.
The device operates across –55°C to +150°C junction temperature range and delivers 35A average forward current when mounted on a heatsink at TC = +95°C - derating to 3.5A at TC = +125°C without heatsink. I²t rating of 599 A²s supports robust surge immunity per 8.3ms half-sine waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands up to 1000V repetitive reverse voltage, suitable for 800VAC peak input designs with safety margin. |
| IF(AV) | 35 A - Delivers 35A average rectified output current when heatsinked at TC = +95°C, supporting high-power SMPS front-ends. |
| VF Max | 1.05 V @ 17.5A - Low conduction loss enables efficient power conversion in high-current linear and quasi-resonant supplies. |
| IR Max | 10 µA @ 25°C - Minimal reverse leakage preserves efficiency in standby and low-load conditions. |
| IFS M | 380 A @ 8.3ms - Handles large transient surges common during AC cold-start or lightning-induced line spikes. |
| RθJC | 1 °C/W - Enables predictable thermal design when mounted to external heatsink, critical for continuous 35A operation. |
| TJ Range | –55°C to +150°C - Supports deployment in industrial and automotive-adjacent environments with wide ambient variation. |
Pinout & Package
Package: KBJ - 4-terminal molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.6g weight, designed for PCB through-hole mounting in any orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One leg of AC input; connects to primary-side transformer secondary or EMI filter output. |
| ~AC2 | AC Input Terminal 2 | Second leg of AC input; completes full-wave bridge input path with ~AC1. |
| +DC | Positive DC Output | Full-wave rectified positive output node; feeds bulk capacitor or PFC stage input. |
| –DC | Negative DC Output / Common Return | Reference return path for DC output; ties to system ground or negative rail of downstream converter. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enhances long-term reliability under thermal cycling and humidity exposure in consumer power supplies. |
| UL Recognized (E95060) | Meets safety certification requirements for end-equipment compliance in North America. |
| Lead-free & Halogen-free | Fulfills RoHS 3 and environmental mandates for global electronics manufacturing and disposal. |
| Low RθJC (1°C/W) | Reduces thermal bottleneck between junction and heatsink, enabling compact thermal solution footprint. |
Applications
| TV Power Supply | PC ATX Power Supply |
|---|---|
Use Scenario: Primary-side AC/DC conversion in 200–500W LCD/LED TV power boards. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 100–240VAC mains to unregulated DC bus. Use Value: 1000V VRRM provides margin against line transients; 35A IF(AV) supports peak load demands during backlight dimming or audio bursts. | Use Scenario: Bulk rectification in ATX main +12V/+5V/+3.3V power supply units. IC Role / Device Role / Timing Role: Off-line bridge rectifier feeding active PFC controller input stage. Use Value: 1.05V VF minimizes conduction loss at 17.5A; glass passivation ensures stability over 10-year field life. |
| Gaming Console Power | Industrial AC-DC Module |
Use Scenario: High-reliability rectification in 300–600W gaming console internal PSU. IC Role / Device Role / Timing Role: Mains input rectifier preceding LLC resonant converter. Use Value: 380A IFSM withstands repeated inrush surges during frequent power cycling; RoHS/Green compliance meets regional import rules. | Use Scenario: General-purpose rectification in DIN-rail or open-frame industrial AC-DC modules. IC Role / Device Role / Timing Role: Standard-recovery bridge for non-PFC, fixed-frequency flyback or forward converters. Use Value: –55°C to +150°C TJ range supports operation in unventilated enclosures; UL recognition simplifies system-level safety approval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay GBU3510 | Same 1000V VRRM, 35A IF(AV), but VF = 1.1V @ 17.5A; slightly higher thermal resistance (RθJC = 1.2°C/W). | Identical use in TV/PC power; minor efficiency penalty at full load due to higher VF. | Select if GBU footprint compatibility is required and 0.05V VF increase is acceptable. |
| ON Semiconductor GBPC3510 | Same ratings, but IR = 5µA @ 25°C (lower leakage); RθJC = 1.1°C/W; lead finish differs (SnPb optional). | Better suited for low-standby-power designs; SnPb option available for legacy reflow processes. | Prefer for ultra-low leakage requirement or mixed-technology assembly lines accepting SnPb. |
Compared with KBJ3510, GBU3510 trades marginal VF increase for broader distributor availability, while GBPC3510 offers tighter leakage control and process flexibility - both require mechanical verification for PCB pad layout and heatsink interface.
Availability
KBJ3510 is available at Aetrix Electronics and suitable for TV power, PC power, and gaming console power applications requiring stable component supply, RoHS-compliant green packaging, and UL-recognized safety certification.
Supply support for KBJ3510 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 the Americas.
The KBJ 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 operating temperature for KBJ3510?
KBJ3510 has a junction temperature range of –55°C to +150°C. Its average forward current derates to 35A at TC = +95°C with heatsink, and to 3.5A at TC = +125°C without heatsink. Thermal design must ensure TJ remains within this limit under worst-case load and ambient conditions.
Is KBJ3510 suitable for high-frequency switching applications?
No - KBJ3510 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 (>20kHz) applications where fast or ultrafast recovery diodes are required to minimize switching loss and EMI.
Does KBJ3510 require a heatsink for 35A operation?
Yes - the 35A average forward current rating is only valid when mounted on an appropriate heatsink at TC = +95°C. Without heatsink, the rating drops to 3.5A at TC = +125°C. Thermal resistance junction-to-case is 1°C/W with heatsink, confirming mandatory heatsinking for full-rated current.
What does "Green" mean in KBJ3510's packaging description?
"Green" denotes Diodes' halogen- and antimony-free molding compound: <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony compounds. It satisfies environmental regulations including RoHS 3 and supports safer end-of-life disposal.
KBJ3510 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):
- 1 kV
- Current - Average Rectified (Io):
- 35 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 17.5 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJ
KBJ3510 FAQ
1.How can I place an order for KBJ3510 through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJ3510 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 KBJ3510 reliable?
The price and inventory of KBJ3510 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJ3510 is usually 5 days.
3.What payment methods are accepted for KBJ3510?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJ3510 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJ3510?
KBJ3510 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJ3510 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 KBJ3510?
For technical support, including KBJ3510 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJ3510 requirements.
6.How does Aetrix verify that KBJ3510 is sourced from the original manufacturer or authorized distributors?
All KBJ3510 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 KBJ3510 meets industry standards.
7.What is the process for return or replacement of KBJ3510?
All KBJ3510 units undergo pre-shipment inspection (PSI). If there is an issue with KBJ3510, 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 KBJ3510 part is unused and in its original packaging.
Return procedure for KBJ3510:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJ3510 Tags
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HDS10M-13
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