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Diodes Incorporated D4KB80
- Part No.:
- D4KB80
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-ESIP
- Datasheet:
-
D4KB80.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 4A D3K
- Quantity:
- Payment:
- Shipping:
Inventory:9,109
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Product details
Overview
D4KB80 from Diodes Incorporated is a surface-mount, glass passivated 4.0A full-wave bridge rectifier with 800V peak repetitive reverse voltage (VRRM), 1.0V forward voltage drop at 2.0A per element, and 10µA reverse leakage at 25°C - designed for AC–DC conversion in LED lighting drivers and offline power supplies.
For engineers reviewing the D4KB80 datasheet, D4KB80 pinout, D4KB80 application, or D4KB80 equivalent, key selection criteria include thermal resistance (RθJC = 1.5°C/W), surge current rating (IFSM = 135A), RoHS- and halogen-free compliance, and D3K package compatibility with automated SMT assembly.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a common cathode/anode configuration within a molded plastic D3K package. It operates across –55°C to +150°C and supports resistive/inductive loads at 60Hz; capacitive loads require 20% current derating.
Thermal performance relies on PCB copper area and optional heatsinking: rated IO = 4.0A at TC = +140°C (with heatsink), dropping to 1.3A at TC = +30°C (no heatsink). Junction-to-case thermal resistance is specified per element at 1.5°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum non-repetitive reverse voltage each diode withstands without breakdown. |
| IO (TC = +140°C) | 4.0 A - Average rectified output current with heatsink; defines continuous DC output capability in thermally managed designs. |
| VFM @ IF = 2.0A | 1.0 V - Forward voltage per diode element; directly impacts conduction loss and thermal rise in bridge operation. |
| IFSM (8.3ms) | 135 A - Non-repetitive surge current tolerance; critical for handling inrush during cold-start of capacitive-input supplies. |
| IR @ 25°C | 10 µA - Reverse leakage per element at rated blocking voltage; low value ensures minimal standby power loss. |
| RθJC (per element) | 1.5 °C/W - Thermal resistance from junction to case; enables accurate heatsink sizing when mounted on FR-4 with aluminum heatsink. |
Pinout & Package
Package: D3K - Molded plastic case, UL 94V-0 rated, 13.8mm × 10.8mm footprint, 3.1mm height, lead-free matte tin terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One input node for incoming AC waveform; connected internally to anode of D1 and cathode of D2. |
| ~AC2 | AC Input Terminal 2 | Second AC input node; connected internally to anode of D3 and cathode of D4. |
| +DC | Positive DC Output | Common cathode node of D1 and D3; delivers rectified positive output voltage. |
| –DC | Negative DC Output | Common anode node of D2 and D4; serves as return path and ground reference for output. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances reliability and moisture resistance versus epoxy-passivated alternatives; improves long-term stability under humidity stress. |
| Lead-free, halogen- and antimony-free "Green" finish | Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 Level 1; eliminates hazardous substances without compromising solderability. |
| Low thermal resistance (RθJC = 1.5°C/W) | Enables higher power density in compact SMT layouts by reducing junction temperature rise per watt dissipated. |
| High surge current rating (IFSM = 135A) | Supports robust operation in applications with high-capacitance input filters, such as LED drivers and battery chargers. |
Applications
| LED Lighting Power Supply | Wall Adapter AC–DC Conversion |
|---|---|
Use Scenario: Off-line constant-current driver for commercial LED troffers and downlights operating from 85–265VAC mains. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC input to pulsating DC prior to PFC and DC–DC stages. Use Value: 1.0V VFM minimizes conduction loss at 4A average current, improving efficiency and reducing heatsink requirements. | Use Scenario: Compact 12V/2A wall plug-in adapter for consumer electronics with space-constrained PCB layout. IC Role / Device Role / Timing Role: Primary-side AC–DC rectification stage delivering unregulated DC bus to switching controller. Use Value: D3K package allows automated placement; 135A IFSM safely handles repeated inrush surges from input X-capacitors. |
| Home Appliance Power Input | Office Equipment SMPS Front-End |
Use Scenario: Power supply for microwave oven control board requiring reliable rectification under variable load and ambient temperature. IC Role / Device Role / Timing Role: Mains input rectifier feeding bulk capacitor and primary-side controller. Use Value: –55°C to +150°C operating range ensures functionality during internal thermal cycling and ambient extremes. | Use Scenario: Input stage of multi-output desktop printer power supply operating continuously in office environments. IC Role / Device Role / Timing Role: Bridge rectifier providing DC bus for PWM controller and multiple isolated DC outputs. Use Value: 10µA IR at 25°C and 500µA at 125°C limits no-load leakage, supporting Energy Star standby power compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K (ON Semiconductor) | Same 800V VRRM and 4A IO rating, but GBU package (larger, through-hole); RθJC = 2.0°C/W. | Requires PCB through-hole mounting and larger board area; less suitable for high-density SMT production. | Select when legacy through-hole design or higher mechanical robustness is prioritized over SMT automation. |
| MB10F (Vishay) | DIP-4 package, 1.1V VFM at 1.5A, 1000V VRRM, IO = 1.0A - lower current and higher VF than D4KB80. | Limited to sub-1A applications; unsuitable for 4A LED driver or adapter use without parallel devices. | Consider only for low-power, cost-sensitive designs where 800V rating and 4A capacity are not required. |
Compared with GBU8K and MB10F, D4KB80 uniquely combines SMT-compatible D3K packaging, 4.0A continuous current, 1.0V forward drop, and industry-leading thermal resistance - making it optimal for space- and efficiency-constrained AC–DC front-ends.
Availability
D4KB80 is available at Aetrix Electronics and suitable for LED lighting drivers, wall adapters, and home appliance power supplies requiring stable component supply, RoHS-compliant manufacturing, and high-volume SMT assembly readiness.
Supply support for D4KB80 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-efficiency power management, signal integrity, and protection solutions.
The D4KB80 belongs to Diodes' advanced bridge rectifier product line, engineered specifically for high-reliability, high-density AC–DC conversion in energy-efficient consumer and industrial power supplies.
FAQ
What is the maximum allowable case temperature for continuous operation?
The D4KB80 is rated for 4.0A average output current at TC = +140°C when mounted on an FR-4 PCB with a 75mm × 75mm × 1.6mm aluminum heatsink. Exceeding this temperature without thermal derating risks accelerated degradation and premature failure due to junction overheating.
Can D4KB80 be used in capacitive-input filter designs?
Yes, but with mandatory 20% current derating per datasheet guidance. For example, its 4.0A rating reduces to 3.2A when driving a large bulk capacitor; this accounts for increased RMS current and thermal stress caused by peaky conduction angles.
Is the D3K package compatible with standard reflow profiles?
Yes - the D3K package uses lead-free matte tin plating and meets MIL-STD-202 Method 208 solderability requirements. It is qualified for IPC/JEDEC J-STD-020 Level 1 moisture sensitivity, allowing unlimited floor life and compatibility with standard Pb-free reflow profiles (peak ≤ 260°C).
How does the 17pF typical junction capacitance affect EMI performance?
The 17pF capacitance per diode element (measured at 1MHz, 4V reverse bias) contributes to high-frequency noise coupling during switching transitions. In EMI-critical designs, this necessitates careful input filter design and layout separation between AC input traces and sensitive control circuitry.
D4KB80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-ESIP
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- D3K
D4KB80 FAQ
1.How can I place an order for D4KB80 through Aetrix?
Please submit a Request for Quotation (RFQ) for D4KB80 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 D4KB80 reliable?
The price and inventory of D4KB80 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D4KB80 is usually 5 days.
3.What payment methods are accepted for D4KB80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D4KB80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D4KB80?
D4KB80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D4KB80 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 D4KB80?
For technical support, including D4KB80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D4KB80 requirements.
6.How does Aetrix verify that D4KB80 is sourced from the original manufacturer or authorized distributors?
All D4KB80 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 D4KB80 meets industry standards.
7.What is the process for return or replacement of D4KB80?
All D4KB80 units undergo pre-shipment inspection (PSI). If there is an issue with D4KB80, 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 D4KB80 part is unused and in its original packaging.
Return procedure for D4KB80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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