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Diodes Incorporated KBP04G
- Part No.:
- KBP04G
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBP
- Datasheet:
-
KBP04G.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 1.5A KBP
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
KBP04G from Diodes Incorporated is a 1.5A standard recovery bridge rectifier with 400V maximum repetitive peak reverse voltage (VRRM), 1.1V forward voltage drop at 1.5A, and 5µA reverse leakage current at 25°C. It features glass-passivated die construction, 1500VRMS case dielectric strength, and 40A non-repetitive surge rating-designed for AC/DC power conversion in offline switch-mode power supplies.
For engineers reviewing the KBP04G datasheet, KBP04G pinout, KBP04G application, or KBP04G equivalent, this device supports high-reliability PCB-mounted rectification where thermal robustness, low IR, and UL recognition are required in industrial and consumer power adapters.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a compact KBP package with common-cathode and common-anode configuration. Its standard recovery time (~2.5µs) balances switching loss and EMI in 50/60Hz line-frequency applications, and its 18°C/W junction-to-case thermal resistance enables direct mounting to copper heatsinks.
The device operates across –55°C to +150°C junction temperature range and maintains ≤500µA leakage at 125°C, supporting stable performance in thermally constrained environments such as enclosed wall adapters and LED drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Withstands peak reverse voltage up to 400V without breakdown in AC line input stages. |
| IO (at TC = +105°C) | 1.5 A - Continuous average output current capability when case temperature is held at 105°C. |
| VF @ 1.5A, 25°C | 1.1 V - Forward voltage drop per diode path, determining conduction loss and thermal load in rectifier bridge. |
| IR @ 400V, 25°C | 5 µA - Low reverse leakage ensures minimal standby power loss and stable DC bus hold-up. |
| IFSM (8.3ms) | 40 A - Peak surge current handling for cold-start inrush and transient overloads. |
| RθJC | 18 °C/W - Thermal resistance from junction to case, enabling thermal design with 75mm × 75mm × 1.6mm Cu heatsink. |
Pinout & Package
Package: KBP (4-pin, single-in-line plastic package with integrated bridge topology; dimensions: 14.5mm × 10.4mm × 4.0mm; weight ≈1.52g; UL 94V-0 rated).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input Anode | One AC input terminal connected to anode of two internal diodes. |
| AC2 | Input Cathode | Second AC input terminal connected to cathode of two internal diodes. |
| + (DC+) | Positive Output | Common cathode node delivering full-wave rectified positive DC output. |
| – (DC–) | Negative Output | Common anode node serving as full-wave rectified negative/return DC output. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid or high-bias stress environments. |
| 1500VRMS dielectric strength | Ensures safe isolation between AC input terminals and DC output under high-voltage transients. |
| UL Recognized (E95060) | Validates compliance with safety standards for end-equipment certification in North America. |
| Lead-free & RoHS 3 compliant | Meets global environmental regulations including EU Directive 2015/863/EU with full exemption documentation. |
Applications
| AC-DC Power Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: 5–24W universal-input offline SMPS for consumer electronics. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 85–265VAC mains to pulsating DC before bulk capacitor and PWM controller. Use Value: 1.1V VF minimizes conduction loss at 1.5A; 40A IFSM handles startup surges without derating. | Use Scenario: DIN-rail mounted 24VDC power supply for PLC I/O modules. IC Role / Device Role / Timing Role: Primary-side rectifier in unregulated linear or flyback-derived auxiliary supply. Use Value: –55°C to +150°C operating range supports wide ambient deployment; UL recognition simplifies system-level safety approval. |
| LED Driver Input Stage | Appliance Motor Control Boards |
Use Scenario: Non-isolated constant-current LED driver for indoor lighting. IC Role / Device Role / Timing Role: Mains rectification feeding buck or buck-boost regulator IC. Use Value: Low 5µA IR at 25°C reduces no-load power consumption; compact KBP footprint saves PCB area. | Use Scenario: Small-appliance control board (e.g., microwave oven, washing machine). IC Role / Device Role / Timing Role: Rectifying transformer secondary output for logic and relay power rails. Use Value: 400V VRRM accommodates 230VAC +10% line tolerance; 18°C/W RθJC allows passive heatsinking on shared ground plane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same KBP package, 400V VRRM, but 1.05V VF @ 1.5A and 10µA IR @ 400V/25°C. | Slightly lower conduction loss but higher leakage; identical thermal and surge ratings. | Prefer for ultra-low VF designs where leakage is less critical than efficiency. |
| DB104 (Diotec) | Same 400V/1.5A rating, KBP package, but 1.1V VF and 5µA IR match KBP04G; lacks UL recognition. | No UL file number-requires additional system-level safety validation for end equipment. | Choose only for cost-sensitive, non-certified internal subsystems with full design control. |
Compared with GBU4K and DB104, KBP04G provides the optimal balance of low leakage (5µA), UL recognition (E95060), and proven thermal performance (18°C/W), making it preferred for certified commercial and industrial power supplies where reliability and regulatory compliance are mandatory.
Availability
KBP04G is available at Aetrix Electronics and suitable for AC-DC power adapters, industrial control power supplies, and LED driver input stages requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for KBP04G 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 KBP series belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, high-yield AC/DC front-end conversion in general-purpose power supplies where fast recovery is unnecessary and thermal robustness is essential.
FAQ
What is the maximum operating temperature for KBP04G?
KBP04G has a specified junction temperature range of –55°C to +150°C and a storage temperature range matching that span. Its thermal resistance (RθJC = 18°C/W) allows reliable operation at full 1.5A load when mounted on a 75mm × 75mm × 1.6mm copper heatsink at TC = +105°C.
Is KBP04G suitable for automotive applications?
KBP04G is not AEC-Q200 qualified and is not intended for automotive use. Diodes offers separate AEC-Q200-compliant bridge rectifiers (e.g., ABS210Q, GBU6J-Q) with PPAP support and IATF 16949 manufacturing. KBP04G is designed for industrial, consumer, and commercial power supplies.
Does KBP04G require a heatsink in typical applications?
A heatsink is recommended for continuous 1.5A operation at elevated ambient temperatures (>50°C) or in enclosed enclosures. At 25°C ambient and free-air conditions, it can deliver ~0.8A continuously. Mounting on ≥75mm² copper area improves thermal performance significantly per the datasheet's RθJC test condition.
How does KBP04G differ from KBP04M?
KBP04G is the standard recovery version with 400V VRRM and typical trr ≈ 2.5µs; KBP04M is the *fast* recovery variant (same package/current rating) with trr ≤ 500ns and higher VF (~1.3V). They are not interchangeable without circuit revalidation due to differing reverse recovery behavior and EMI profile.
KBP04G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, KBP
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBP
KBP04G FAQ
1.How can I place an order for KBP04G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBP04G 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 KBP04G reliable?
The price and inventory of KBP04G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBP04G is usually 5 days.
3.What payment methods are accepted for KBP04G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBP04G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBP04G?
KBP04G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBP04G 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 KBP04G?
For technical support, including KBP04G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBP04G requirements.
6.How does Aetrix verify that KBP04G is sourced from the original manufacturer or authorized distributors?
All KBP04G 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 KBP04G meets industry standards.
7.What is the process for return or replacement of KBP04G?
All KBP04G units undergo pre-shipment inspection (PSI). If there is an issue with KBP04G, 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 KBP04G part is unused and in its original packaging.
Return procedure for KBP04G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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