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Vishay General Semiconductor - Diodes Division BU2008-E3/51
- Part No.:
- BU2008-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, BU
- Datasheet:
-
BU2008-E3/51.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 3.5A BU
- Quantity:
- Payment:
- Shipping:
Inventory:6,897
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Product details
Overview
BU2008-E3/51 from Vishay General Semiconductor is an enhanced isoCink+™ single-in-line bridge rectifier rated for 20 A average forward current and 800 V maximum repetitive peak reverse voltage, with 0.85 V forward voltage at 10 A and 5 μA reverse leakage at 25 °C. It is designed for AC/DC full-wave rectification in switching power supplies and white-goods motor control circuits.
For engineers reviewing the BU2008-E3/51 datasheet, BU2008-E3/51 pinout, BU2008-E3/51 application, or BU2008-E3/51 equivalent, key selection criteria include thermal resistance (RθJC = 2.4 °C/W), UL recognition (E312394), RoHS-compliant matte tin-plated leads, 150 °C max junction temperature, and compatibility with J-STD-002 solderability standards.
Technical Context
The BU2008-E3/51 implements a four-diode full-wave bridge configuration in a thin single-in-line (SIL) package with glass-passivated junctions and enhanced thermal conductivity. Its isoCink+™ construction enables superior heat transfer from die to case, supporting 20 A continuous conduction with 60 W air-cooled heatsink or 3.5 A in free-air operation.
It meets UL 94 V-0 flammability rating, withstands 275 °C solder dip (10 s), and passes JESD 201 Class 1A whisker testing. Polarity is marked on body with beveled corner indicating positive lead, and mounting torque is specified at 5.7 cm-kg (5 inch-lbs) recommended.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification from 565 VAC RMS mains or PFC-stage outputs without breakdown |
| IF(AV) | 20 A at TC = 61 °C - delivers sustained DC output for mid-power SMPS and appliance motor drives |
| VF @ 10 A | 0.85 V at 125 °C - reduces conduction loss and thermal stress under high-temperature operation |
| IFSM | 240 A (8.3 ms sine) - handles inrush currents during cold-start of switched-mode power supplies |
| RθJC | 2.4 °C/W - enables efficient heat transfer to external heatsink, critical for thermally constrained enclosures |
| IR | 5 μA @ 25 °C - ensures low standby leakage in energy-sensitive applications like standby power rails |
| TJ max | 150 °C - allows operation in high-ambient environments such as enclosed kitchen appliances |
Pinout & Package
Package: BU case - thin single-in-line (SIL) molded package with UL 94 V-0 rating, 0.710–0.740 inch length, 0.190–0.210 inch width, and beveled corner marking positive terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| + | Bridge anode output | DC positive output node; connects to bulk capacitor or downstream regulator input |
| - | Bridge cathode output | DC negative/return path; referenced to system ground or common rail |
| ~ | AC input terminals (x2) | Dual AC inputs accept full-wave sinusoidal input; symmetrical layout supports bidirectional line connection |
Key Features
| Feature | Design Value |
|---|---|
| isoCink+™ construction | Enhanced thermal interface between silicon die and copper frame reduces RθJC to 2.4 °C/W |
| Glass-passivated junction | Improves long-term reliability and moisture resistance in humid appliance environments |
| UL recognition E312394 | Validates dielectric strength ≥1500 V and safety compliance for end-equipment certification |
| Matte tin-plated leads | Ensures robust solder wetting and intermetallic formation per J-STD-002 and JESD 22-B102 |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth under thermal cycling, critical for industrial and white-goods longevity |
Applications
| Switching Power Supplies | Home Appliance Motor Drives |
|---|---|
Use Scenario: Input stage rectification in 100–300 W offline SMPS for LED lighting and consumer electronics. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus prior to PFC or PWM controller stage. Use Value: 20 A IF(AV) and 240 A IFSM support high-efficiency operation with minimal conduction loss and reliable cold-start capability. | Use Scenario: AC-to-DC conversion for universal motor control in washing machines and vacuum cleaners. IC Role / Device Role / Timing Role: Bridge rectifier supplying DC to TRIAC or MOSFET-based motor phase control circuitry. Use Value: 150 °C TJ max and UL safety rating enable direct integration into thermally demanding, safety-critical appliance modules. |
| White-Goods Control Boards | Industrial AC-DC Auxiliary Supplies |
Use Scenario: Main power conversion on control boards for refrigerators and dishwashers operating in ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Primary rectifier feeding isolated DC-DC converters powering microcontrollers and sensors. Use Value: RθJC = 2.4 °C/W and glass-passivated junction ensure stable performance over 10+ year field life under thermal cycling. | Use Scenario: Compact auxiliary power supply for PLC I/O modules requiring robust, certified rectification. IC Role / Device Role / Timing Role: Isolated bridge rectifier delivering 24 V DC from 240 VAC input in DIN-rail mounted equipment. Use Value: UL E312394 recognition and 800 V VRRM provide regulatory compliance and margin against line surges in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K-E3/45 | Same BU package, 800 V VRRM, but 8 A IF(AV); lower thermal capacity and no isoCink+™ enhancement | Suitable only for <100 W designs; insufficient for 20 A continuous loads | Select BU2008-E3/51 when >15 A average current or enhanced thermal performance is required |
| GBU20J-E3/51 | 20 A IF(AV), 1000 V VRRM, GBU package (larger footprint); RθJC ≈ 3.0 °C/W, no UL E312394 | Better voltage margin but larger PCB area and no safety certification; requires redesign for UL-compliant systems | Choose BU2008-E3/51 for space-constrained, UL-certified 800 V applications needing optimal thermal efficiency |
Compared with GBU8K-E3/45 and GBU20J-E3/51, the BU2008-E3/51 uniquely combines 20 A current rating, 800 V blocking, UL safety approval, and isoCink+™ thermal performance in the compact BU package-making it optimal for certified, thermally dense white-goods and SMPS designs.
Availability
BU2008-E3/51 is available at Aetrix Electronics and suitable for switching power supplies, home appliance motor drives, and industrial auxiliary power supplies requiring stable component supply and long-term manufacturing continuity.
Supply support for BU2008-E3/51 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability and application-specific optimization.
The BU-series enhanced isoCink+™ bridge rectifiers were developed to address thermal and safety challenges in high-volume white-goods and industrial power conversion, integrating UL certification and improved thermal resistance into standardized SIL packages.
FAQ
What is the maximum junction temperature rating for BU2008-E3/51?
The BU2008-E3/51 has a maximum operating junction temperature of 150 °C, verified per Vishay Document Number 84804. This rating enables reliable operation in enclosed, high-ambient environments such as refrigerator control boards or sealed power supplies where internal temperatures exceed 70 °C. The BU2008-E3/51 maintains specified electrical characteristics up to this limit when thermal design adheres to RθJC = 2.4 °C/W and appropriate heatsinking is applied.
Does BU2008-E3/51 have UL safety certification?
Yes, the BU2008-E3/51 carries UL recognition file number E312394, confirming compliance with UL 60747-5-1 for semiconductor devices and validating its dielectric strength of ≥1500 V. This certification applies specifically to the BU2008-E3/51 variant and supports end-equipment safety approvals for household and industrial applications without requiring additional isolation components.
What is the forward voltage drop of BU2008-E3/51 at 10 A and 125 °C?
The BU2008-E3/51 exhibits a typical forward voltage of 0.85 V at 10 A and 125 °C, as specified in the Electrical Characteristics table of Vishay Document 84804. This value reflects real-world conduction loss under elevated temperature conditions and directly impacts thermal design and efficiency calculations for the BU2008-E3/51 in continuous-duty applications like motor drive power stages.
Is BU2008-E3/51 compatible with lead-free reflow and wave soldering processes?
Yes, the BU2008-E3/51 features matte tin-plated leads qualified to J-STD-002 and JESD 22-B102, supporting both lead-free reflow and wave soldering. Its maximum solder dip rating is 275 °C for 10 seconds per JESD 22-B106, making it compatible with standard Pb-free assembly lines. The BU2008-E3/51 also passes JESD 201 Class 1A whisker testing, ensuring long-term solder joint integrity.
How does the isoCink+™ technology in BU2008-E3/51 improve thermal performance?
The isoCink+™ technology in BU2008-E3/51 enhances thermal conductivity between the silicon die and copper lead frame, reducing junction-to-case thermal resistance to 2.4 °C/W. This improvement allows the BU2008-E3/51 to sustain 20 A average current with less temperature rise than conventional BU-packaged bridges, enabling smaller heatsinks or higher power density in space-constrained applications like compact SMPS and appliance control modules.
BU2008-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 4-SIP, BU
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 3.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 10 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:
- isoCINK+™ BU
BU2008-E3/51 FAQ
1.How can I place an order for BU2008-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for BU2008-E3/51 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 BU2008-E3/51 reliable?
The price and inventory of BU2008-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BU2008-E3/51 is usually 5 days.
3.What payment methods are accepted for BU2008-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BU2008-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BU2008-E3/51?
BU2008-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BU2008-E3/51 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 BU2008-E3/51?
For technical support, including BU2008-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BU2008-E3/51 requirements.
6.How does Aetrix verify that BU2008-E3/51 is sourced from the original manufacturer or authorized distributors?
All BU2008-E3/51 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 BU2008-E3/51 meets industry standards.
7.What is the process for return or replacement of BU2008-E3/51?
All BU2008-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with BU2008-E3/51, 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 BU2008-E3/51 part is unused and in its original packaging.
Return procedure for BU2008-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BU2008-E3/51 Tags
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MB10S-13
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BAS3007ARPPE6327HTSA1
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DF02M
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DF04M
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DF01M
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