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Vishay General Semiconductor - Diodes Division VS-26MB05A
- Part No.:
- VS-26MB05A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 4-Square, D-34
- Datasheet:
-
VS-26MB05A.pdf
- Description:
- BRIDGE RECT 1PHASE 50V 25A D-34
- Quantity:
- Payment:
- Shipping:
Inventory:14
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Product details
Overview
VS-26MB05A from Infineon (formerly International Rectifier) is a single-phase bridge rectifier module rated for 25 A average forward current at 65 °C case temperature, with 50 V maximum repetitive reverse voltage (VRRM), 400 A non-repetitive peak surge current (IFSM @ 60 Hz), and 790 A²s I²t rating. It features electrically insulated case, 3-way terminals (push-on/wrap/solder), and UL E62320 approval for use in industrial power supplies and instrumentation AC/DC conversion stages.
For engineers reviewing the VS-26MB05A datasheet, VS-26MB05A pinout, VS-26MB05A application, or VS-26MB05A equivalent, key selection criteria include its 25 A thermal current rating at TC = 65 °C, 50 V VRRM, low forward voltage drop (1.11 V at IFM), 1.7 K/W junction-to-case thermal resistance, and compatibility with standard heatsink mounting via center-hole fixation.
Technical Context
The VS-26MB05A implements a monolithic single-phase full-wave bridge configuration using four silicon diodes in an encapsulated, electrically isolated package. Its thermal design relies on direct metal-to-heatsink contact through an insulated baseplate rated for 2700 V RMS isolation.
Electrical behavior follows two-region forward conduction modeling: low-current region (VF(TO)1 = 0.76 V, rt1 = 6.8 mΩ) and high-current region (VF(TO)2 = 0.92 V, rt2 = 5.0 mΩ), enabling accurate loss calculation across load profiles from light to full-rated output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO (Avg) | 25 A at TC = 65 °C - defines continuous DC output capability under forced-air or heatsink-cooled conditions |
| VRRM | 50 V - maximum repetitive reverse voltage per diode; sets safe AC input voltage limit (e.g., ≤35 V RMS) |
| IFSM @ 60 Hz | 400 A - peak surge withstand for 8.3 ms; determines fuse coordination and inrush robustness |
| I²t (fusing) | 790 A²s - thermal energy limit before catastrophic failure; critical for short-circuit protection design |
| RthJC | 1.7 K/W - junction-to-case thermal resistance; used with heatsink RthSA to calculate max TJ under load |
| VFM | 1.11 V at TJ = 25 °C, IFM = π × 25 A - forward drop at peak conduction; directly impacts conduction loss and efficiency |
| VINS | 2700 V RMS - isolation voltage between baseplate and internal circuitry; satisfies safety standards for Class I equipment |
Pinout & Package
VS-26MB05A uses a compact, molded plastic package with electrically insulated metal baseplate (MB-series outline per Bulletin I2715). Mounting is via center hole (M4 thread, 2.0 Nm torque) with smooth, greased interface to heatsink. Terminal configuration supports 3-way connection: push-on faston (0.250" wide), wire wrap, or solder lug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Bridge AC input terminal 1 | One leg of AC input; connects to line or neutral side of transformer secondary |
| AC2 | Bridge AC input terminal 2 | Second leg of AC input; completes full-wave rectification path |
| + (Anode) | Positive DC output | Full-wave rectified positive output node; feeds bulk capacitor or regulator input |
| – (Cathode) | Negative DC output / common return | DC common reference; ties to system ground or negative rail |
Key Features
| Feature | Design Value |
|---|---|
| Electrically insulated case | 2700 V RMS isolation enables safe mounting on live heatsinks without additional insulation |
| 3-way terminal compatibility | Accepts push-on faston, wire wrap, or solder connections - simplifies assembly across prototyping and production |
| High power/volume ratio | 25 A rating in compact MB-series footprint reduces board space vs discrete diode solutions |
| UL E62320 approval | Meets end-equipment safety requirements for industrial and instrumentation applications |
| Center-hole mechanical fixation | M4 mounting ensures stable thermal interface and vibration resistance in harsh environments |
Applications
| Industrial Power Supplies | Test & Measurement Equipment |
|---|---|
Use Scenario: AC/DC front-end in programmable DC power supplies delivering 0–30 V / 0–25 A output. IC Role / Device Role / Timing Role: Single-phase bridge rectifier converting transformer-isolated AC to unregulated DC bus. Use Value: 25 A IO rating and 400 A IFSM ensure reliable operation during load transients and output short-circuit events. | Use Scenario: Input rectification stage in portable multimeters and oscilloscope power sections. IC Role / Device Role / Timing Role: Full-wave AC-to-DC conversion for dual-polarity analog supply rails (±15 V). Use Value: Compact MB package and low VFM (1.11 V) minimize heat generation in space-constrained enclosures. |
| Motor Drive Control Boards | Medical Diagnostic Power Modules |
Use Scenario: Auxiliary power supply for gate drivers and logic in 3-phase inverter control boards. IC Role / Device Role / Timing Role: Isolated AC input rectification feeding 24 V DC auxiliary rail. Use Value: 2700 V RMS isolation allows direct heatsink mounting to chassis ground while maintaining creepage/clearance compliance. | Use Scenario: Mains-powered ultrasound imaging system with strict leakage current limits. IC Role / Device Role / Timing Role: Primary rectification stage with reinforced insulation barrier. Use Value: UL E62320 certification and 2700 V isolation support Class I medical device safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-25B05 | Same 25 A / 50 V rating but TO-220AB package; no insulated baseplate; RthJC = 2.0 K/W | Requires external insulator and thermal pad; unsuitable for direct heatsink mounting | Select when cost sensitivity outweighs isolation and thermal performance needs |
| ON Semiconductor GBPC2505 | 25 A / 50 V GPP bridge in GBPC package; RthJC = 1.8 K/W; VFM = 1.1 V; no UL E62320 listing | Lacks certified isolation; requires separate safety review for medical/industrial use | Select for non-safety-critical consumer applications where certification overhead must be avoided |
Compared with VS-26MB05A, VS-25B05 sacrifices electrical isolation and thermal efficiency for lower cost and wider distributor availability, while GBPC2505 offers similar electrical specs but omits safety certification and insulated mounting - making VS-26MB05A the preferred choice where regulatory compliance and heatsink-integrated design are mandatory.
Availability
VS-26MB05A is available at Aetrix Electronics and suitable for industrial power supplies, test & measurement equipment, motor drive control boards, and medical diagnostic power modules requiring stable component supply and long-term lifecycle support.
Supply support for VS-26MB05A 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
Infineon Technologies is a global semiconductor leader specializing in power management, automotive, and industrial control ICs and discrete devices.
The VS-26MB05A belongs to Infineon's MB-series bridge rectifier family, engineered for compact, high-reliability AC/DC conversion in space-constrained industrial and instrumentation systems where electrical isolation and thermal performance are critical.
FAQ
What is the maximum average forward current rating for VS-26MB05A?
The VS-26MB05A is rated for 25 A average forward current (IO) at a case temperature (TC) of 65 °C. This rating assumes proper heatsinking and ambient conditions that maintain the case within specification. Derating is required above 65 °C TC, down to zero at 150 °C junction temperature. The 25 A value reflects sustained DC output capability in real-world power supply designs.
Does VS-26MB05A have electrical isolation between the baseplate and internal circuitry?
Yes, the VS-26MB05A features an electrically insulated metal baseplate rated for 2700 V RMS isolation (VINS) at 50 Hz for 1 second. This allows direct mounting to a grounded heatsink without additional insulating hardware, simplifying thermal design and improving reliability in industrial and medical applications where creepage and clearance compliance is mandatory.
What is the forward voltage drop of VS-26MB05A under typical operating conditions?
The VS-26MB05A has a maximum forward voltage drop (VFM) of 1.11 V at TJ = 25 °C and instantaneous forward current (IFM) equal to π × 25 A (≈78.5 A) with 400 µs pulse width. At higher junction temperatures (e.g., 150 °C), VFM decreases slightly due to semiconductor physics, but conduction losses remain predictable using the two-region model (VF(TO)1 = 0.76 V, rt1 = 6.8 mΩ).
Is VS-26MB05A certified to any safety standards?
Yes, the VS-26MB05A is UL E62320 approved, confirming compliance with international safety standards for power rectifiers used in industrial and instrumentation equipment. This certification covers construction, isolation, flammability, and thermal performance - eliminating the need for end-product designers to requalify the component for basic insulation and fault withstand.
What mounting torque should be applied to the center fixing screw of VS-26MB05A?
The recommended mounting torque for the center-hole M4 screw of VS-26MB05A is 2.0 Nm ± 10%, as specified in Bulletin I2715 rev. E. Applying correct torque ensures optimal thermal contact between the insulated baseplate and heatsink while avoiding mechanical stress on the molded package or terminal lugs. Under-torque increases thermal resistance; over-torque risks cracking the housing or stripping the thread.
VS-26MB05A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 4-Square, D-34
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 50 V
- Current - Average Rectified (Io):
- 25 A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- D-34
VS-26MB05A FAQ
1.How can I place an order for VS-26MB05A through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-26MB05A 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 VS-26MB05A reliable?
The price and inventory of VS-26MB05A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-26MB05A is usually 5 days.
3.What payment methods are accepted for VS-26MB05A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-26MB05A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-26MB05A?
VS-26MB05A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-26MB05A 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 VS-26MB05A?
For technical support, including VS-26MB05A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-26MB05A requirements.
6.How does Aetrix verify that VS-26MB05A is sourced from the original manufacturer or authorized distributors?
All VS-26MB05A 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 VS-26MB05A meets industry standards.
7.What is the process for return or replacement of VS-26MB05A?
All VS-26MB05A units undergo pre-shipment inspection (PSI). If there is an issue with VS-26MB05A, 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 VS-26MB05A part is unused and in its original packaging.
Return procedure for VS-26MB05A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-26MB05A Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
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