Vishay General Semiconductor - Diodes Division BU10105S-E3/45
- Part No.:
- BU10105S-E3/45
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, BU-5S
- Datasheet:
-
BU10105S-E3/45.pdf
- Description:
- BRIDGE RECT 1P 1KV 3.2A BU-5S
- Quantity:
- Payment:

- Shipping:

Inventory:247
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Product details
Overview
BU10105S-E3/45 from Vishay General Semiconductor is a 10 A average forward current, 1000 V peak repetitive reverse voltage enhanced isoCink+™ bridge rectifier in a thin single-in-line BU package with glass-passivated junctions and matte tin-plated leads. It delivers 0.88 V forward voltage at 5.0 A and 125 °C, supports 120 A non-repetitive surge current, and operates up to 150 °C junction temperature-used in AC/DC full-wave rectification for switching power supplies and white-goods motor drives.
For engineers reviewing the BU10105S-E3/45 datasheet, BU10105S-E3/45 pinout, BU10105S-E3/45 application, or BU10105S-E3/45 equivalent, key selection criteria include its 1000 V VRRM, thermal resistance of 3.0 °C/W (junction-to-case), UL E312394 recognition, RoHS-compliant E3 suffix, and compatibility with J-STD-002 solderability standards.
Technical Context
The BU10105S-E3/45 implements a four-diode full-wave bridge configuration in a single inline package with internal isoCink+™ thermal architecture that enhances heat transfer from junction to case. Its glass-passivated silicon die ensures stable reverse leakage (<5 μA at 25 °C) and robust surge handling (120 A IFSM, 60 A²s I²t rating).
Designed for high-reliability AC input stages, it features a polarity-marked body with beveled positive corner, meets UL 94 V-0 flammability, and supports 275 °C solder dip per JESD 22-B106. The BU package enables direct mounting to heatsinks with ≤10 cm-kg torque.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltage in universal-input SMPS front ends without breakdown |
| IF(AV) | 10 A - Sustains continuous output current in 60 W air-cooled power supplies |
| VF @ 5.0 A, 125 °C | 0.88 V - Low conduction loss reduces thermal stress in high-duty-cycle applications |
| IFSM | 120 A - Handles inrush surges from cold-start line transients or capacitor charging |
| RθJC | 3.0 °C/W - Enables efficient heat transfer to external heatsink for stable 150 °C operation |
| IR @ 25 °C | ≤5 μA - Minimizes standby power loss in energy-sensitive appliances |
| TJ max. | 150 °C - Supports extended operation in enclosed, thermally constrained environments |
Pinout & Package
Package: BU - Thin single-in-line molded case with UL 94 V-0 compound, matte tin-plated leads, and polarity marking (beveled corner = anode/positive terminal). Dimensions: 0.710 × 0.190 × 0.080 inches (18.0 × 4.83 × 2.03 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC input terminal 1 | One leg of AC input; connected internally to cathode of D1 and anode of D2 |
| ~ (AC2) | AC input terminal 2 | Second leg of AC input; connected internally to cathode of D3 and anode of D4 |
| + | DC positive output | Common cathode node of D1 and D3; delivers rectified positive rail |
| - | DC negative output | Common anode node of D2 and D4; serves as return path and ground reference |
Key Features
| Feature | Design Value |
|---|---|
| isoCink+™ thermal architecture | Reduces RθJC to 3.0 °C/W for improved power density and heatsink flexibility |
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling per JESD22-A101 |
| UL E312394 recognition | Validates dielectric strength ≥1500 V and safety compliance for end-equipment certification |
| RoHS-compliant E3 suffix | Meets EU Directive 2011/65/EU with lead-free matte tin plating and halogen-free molding compound |
| J-STD-002 solderability | Guarantees reliable wetting during wave or reflow assembly without pre-tinning |
Applications
| Switching Power Supplies | Home Appliance Motor Drives |
|---|---|
Use Scenario: AC front-end rectification in 60–120 W offline SMPS for LED drivers and industrial controllers. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 85–265 VAC input to unregulated DC bus. Use Value: 1000 V VRRM provides margin against line surges; 10 A IF(AV) supports sustained load without derating. | Use Scenario: Rectification stage in universal-motor control modules for vacuum cleaners and blenders. IC Role / Device Role / Timing Role: AC-to-DC conversion feeding triac or MOSFET-based phase-control circuits. Use Value: 120 A IFSM withstands motor startup spikes; 150 °C TJ max enables compact enclosure design. |
| White-Goods Compressor Power Stages | Industrial HVAC Fan Controllers |
Use Scenario: Input rectification for inverter-driven compressors in refrigerators and air conditioners. IC Role / Device Role / Timing Role: High-reliability bridge supplying DC link to IGBT inverter stage. Use Value: Glass passivation prevents degradation under condensation; UL recognition simplifies safety approval. | Use Scenario: AC input conditioning in variable-speed fan modules for commercial HVAC systems. IC Role / Device Role / Timing Role: Bridge rectifier delivering stable DC to PWM controller and gate driver ICs. Use Value: 3.0 °C/W RθJC allows direct heatsink mounting without thermal interface pads, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay BU1010-E3/45 | Same electrical specs and BU package; differs only in part numbering convention (no "5S" suffix) | No functional difference; identical thermal, surge, and safety performance | Select when standard BU1010 ordering is preferred or legacy BOM alignment required |
| ON Semiconductor GBPC1010 | 10 A/1000 V bridge in GBPC package (larger footprint, higher RθJA = 35 °C/W) | Requires PCB layout change; less efficient thermal path without heatsink | Choose only if GBPC footprint is already standardized and heatsink integration is not feasible |
Compared with BU1010-E3/45 and GBPC1010, the BU10105S-E3/45 offers identical core ratings but includes explicit isoCink+™ branding and updated packaging traceability (E3/45 tube); its BU package enables lower-profile mounting and superior junction-to-case thermal transfer than GBPC alternatives.
Availability
BU10105S-E3/45 is available at Aetrix Electronics and suitable for switching power supplies, home appliance motor drives, and white-goods compressor power stages requiring stable component supply, long-lifecycle support, and certified safety compliance.
Supply support for BU10105S-E3/45 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, efficiency, and safety certification.
The BU-series enhanced isoCink+™ bridge rectifiers were developed to deliver higher power density and improved thermal performance in space-constrained AC/DC front ends for consumer and industrial equipment.
FAQ
What is the maximum junction temperature rating for BU10105S-E3/45?
The BU10105S-E3/45 has a maximum operating junction temperature of +150 °C, verified per JEDEC JESD22-A104. This rating allows continuous operation in thermally demanding environments such as enclosed white-goods enclosures or industrial power modules where ambient temperatures exceed 85 °C. Derating curves in the datasheet confirm 10 A IF(AV) is sustainable at TC = 92 °C with a 60 W heatsink.
Does BU10105S-E3/45 meet UL safety certification?
Yes, BU10105S-E3/45 carries UL recognition file number E312394, confirming compliance with UL 60747-1 for semiconductor devices and validating dielectric strength ≥1500 V RMS. This certification supports end-equipment safety approvals for Class II appliances and industrial power supplies without requiring additional isolation components.
What is the forward voltage drop of BU10105S-E3/45 at rated current and elevated temperature?
At 5.0 A forward current and 125 °C junction temperature, BU10105S-E3/45 exhibits a typical forward voltage of 0.88 V, with a maximum of 0.95 V. This low VF minimizes conduction losses in high-efficiency designs and contributes to reduced thermal load on the heatsink compared to legacy bridge rectifiers with >1.1 V drop at same conditions.
Is BU10105S-E3/45 compatible with lead-free reflow and wave soldering processes?
Yes, BU10105S-E3/45 features matte tin-plated leads qualified to J-STD-002 and JESD 22-B102 for solderability, and withstands solder dip at 275 °C for up to 10 s per JESD 22-B106. Its RoHS-compliant E3 suffix confirms lead-free construction and compatibility with standard Pb-free reflow profiles (peak 260 °C) and wave soldering.
How does the BU package of BU10105S-E3/45 differ from the GBPC package used in similar-rated bridges?
The BU package of BU10105S-E3/45 is a thin single-in-line outline (0.190" width, 0.080" height), optimized for low-profile mounting and direct heatsink contact with 3.0 °C/W RθJC. In contrast, GBPC packages (e.g., GBPC1010) are bulkier (0.86" × 0.62"), have higher RθJA (35 °C/W), and require thermal interface materials-making BU10105S-E3/45 preferable for space- and thermal-constrained designs.
BU10105S-E3/45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 4-SIP, BU-5S
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1 kV
- Current - Average Rectified (Io):
- 3.2 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 5 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- isoCINK+™ BU-5S
BU10105S-E3/45 FAQ
1.How can I place an order for BU10105S-E3/45 through Aetrix?
Please submit a Request for Quotation (RFQ) for BU10105S-E3/45 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 BU10105S-E3/45 reliable?
The price and inventory of BU10105S-E3/45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BU10105S-E3/45 is usually 5 days.
3.What payment methods are accepted for BU10105S-E3/45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BU10105S-E3/45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BU10105S-E3/45?
BU10105S-E3/45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BU10105S-E3/45 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 BU10105S-E3/45?
For technical support, including BU10105S-E3/45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BU10105S-E3/45 requirements.
6.How does Aetrix verify that BU10105S-E3/45 is sourced from the original manufacturer or authorized distributors?
All BU10105S-E3/45 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 BU10105S-E3/45 meets industry standards.
7.What is the process for return or replacement of BU10105S-E3/45?
All BU10105S-E3/45 units undergo pre-shipment inspection (PSI). If there is an issue with BU10105S-E3/45, 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 BU10105S-E3/45 part is unused and in its original packaging.
Return procedure for BU10105S-E3/45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BU10105S-E3/45 Tags

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