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Vishay General Semiconductor - Diodes Division VS-26MT140
- Part No.:
- VS-26MT140
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Bridge Rectifiers
- Package:
- 5-Square, D-63
- Datasheet:
-
VS-26MT140.pdf
- Description:
- BRIDGE RECT 3P 1.4KV 25A D-63
- Quantity:
- Payment:
- Shipping:
Inventory:43
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Product details
Overview
VS-26MT140 from Vishay Semiconductors is a three-phase bridge rectifier with 25 A average output current, 1400 V maximum repetitive peak reverse voltage (VRRM), and D-63 package with electrically insulated case. It delivers reliable AC-to-DC conversion in industrial motor drives and power supplies where high thermal conductivity and UL E300359 approval are required.
For engineers reviewing the VS-26MT140 datasheet, VS-26MT140 pinout, VS-26MT140 application, or VS-26MT140 equivalent, key selection criteria include its 1.42 K/W junction-to-case thermal resistance, 260–275 °C lead-free solder compatibility, and 20 g mass for mechanical mounting validation in high-vibration environments.
Technical Context
This device integrates six silicon diodes in a single-phase-in, three-phase-out bridge configuration optimized for 50/60 Hz line-frequency rectification. Its dual-level forward voltage characteristics-VF(TO)1 = 0.88 V and VF(TO)2 = 1.13 V at TJ = 150 °C-enable accurate conduction loss modeling across load ranges.
Thermal design is supported by a fixed center-hole mounting interface and low RthCS = 0.2 K/W (greased flat surface), enabling direct heatsink coupling without insulating washers. The D-63 package maintains electrical isolation up to 2700 V RMS between terminals and case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO (DC Output Current) | 25 A at TC = 70 °C - defines continuous power handling under standard heatsink conditions |
| VRRM | 1400 V - maximum reverse voltage per diode before breakdown; sets system insulation and surge margin |
| IFSM (t = 10 ms) | 360 A - non-repetitive surge capability during startup or fault events without fuse coordination |
| RthJC | 1.42 K/W - quantifies thermal bottleneck from junction to case; critical for derating at elevated ambient |
| VFM (TJ = 25 °C, IFM = 40 A) | 1.26 V - forward drop per junction at peak current; determines conduction loss and heat generation |
| IRRM (TJ = 25 °C) | 100 µA - leakage current at rated VRRM; impacts standby loss and high-impedance sensing integrity |
| VINS (RMS Isolation) | 2700 V - dielectric strength between all terminals and case; validates safety compliance for Class I equipment |
Pinout & Package
The VS-26MT140 uses the D-63 package: 28.5 mm × 24 mm × 22 mm body with center-mounting hole (Ø5.2 mm), nickel-plated terminals, and electrically insulated case. Dimensions comply with Vishay outline drawing 95251.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1, AC2, AC3 | Three-phase AC inputs | Accept balanced 3φ input; terminal spacing supports creepage/clearance for 1400 V systems |
| + | DC positive output | Common anode node for all three upper diodes; carries full DC output current |
| - | DC negative output | Common cathode node for all three lower diodes; serves as return path and ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Universal 3-way terminals | Push-on, wrap-around, or solder termination options enable flexible assembly across OEM and contract manufacturing lines |
| Electrically insulated case | Enables direct mounting to grounded heatsinks without additional isolation hardware, reducing BOM and assembly cost |
| UL E300359 approval | Validates compliance with UL 60747-4 for semiconductor devices, supporting safety certification of end equipment |
| Lead-free solder compatible | Rated for SAC305 reflow at 260–275 °C, aligning with IPC-J-STD-020 moisture sensitivity and thermal profile requirements |
| Industrial qualification | Specified for operation from –55 °C to +150 °C junction temperature, supporting deployment in harsh ambient environments |
Applications
| Industrial Motor Drives | Uninterruptible Power Supplies |
|---|---|
|
Use Scenario: Three-phase AC input rectification in variable-frequency drive front-ends operating at 400–690 VAC line voltage. IC Role / Device Role / Timing Role: Primary power conversion stage converting utility AC to stable DC bus for inverter section. Use Value: 1400 V VRRM provides 2× margin over 690 VAC peak (976 V), ensuring robustness against transients and harmonics. |
Use Scenario: Rectifying generator or utility input in online double-conversion UPS systems with battery backup. IC Role / Device Role / Timing Role: High-current, low-loss AC/DC interface maintaining DC bus stability during transfer switching. Use Value: 25 A IO rating and 1.42 K/W RthJC support continuous 3 kVA operation with forced-air heatsinking. |
| Welding Power Supplies | Test Equipment Power Stages |
|
Use Scenario: Duty-cycled rectification in IGBT-based inverter welders requiring high surge tolerance and thermal resilience. IC Role / Device Role / Timing Role: Main rectifier delivering pulsed DC to smoothing chokes and inverter stages. Use Value: 360 A IFSM (10 ms) withstands repetitive arc ignition surges without degradation or thermal runaway. |
Use Scenario: Precision AC source conditioning in programmable AC/DC power analyzers and calibration systems. IC Role / Device Role / Timing Role: Low-leakage, low-VF rectifier minimizing measurement error in feedback-controlled outputs. Use Value: 100 µA IRRM at 25 °C ensures minimal reverse-path current injection into sensitive analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VS-26MT120 | 1200 V VRRM, identical IO = 25 A, same D-63 package and thermal specs | Limited to 400–480 VAC systems; lower surge margin than VS-26MT140 in 690 VAC applications | Select when system peak reverse stress remains ≤1200 V and cost optimization is prioritized |
| VS-36MT140 | 35 A IO (vs. 25 A), same 1400 V VRRM, slightly lower RthJC = 1.35 K/W, identical D-63 footprint | Supports higher continuous power (e.g., >4 kVA) but requires larger heatsink due to increased total loss | Choose for future-proofing or higher-output variants where PCB layout reuse is mandatory |
Compared with VS-26MT120, the VS-26MT140 adds 200 V reverse margin for improved transient immunity in medium-voltage industrial grids; versus VS-36MT140, it trades 10 A current headroom for tighter thermal management in space-constrained enclosures.
Availability
VS-26MT140 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and welding equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for VS-26MT140 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, rectifiers, MOSFETs, and optoelectronics for industrial, automotive, and computing markets.
The VS-26MT.. series targets general-purpose and instrumentation-grade three-phase rectification, emphasizing compact size, thermal efficiency, and safety-certified insulation for cost-sensitive yet demanding power conversion.
FAQ
What is the maximum allowable case temperature for continuous operation of the VS-26MT140?
The VS-26MT140 is rated for a maximum case temperature (TC) of 70 °C at its full 25 A DC output current. Exceeding this temperature requires linear derating per the datasheet's Fig. 6 curve. Maintaining TC ≤ 70 °C ensures junction temperature stays within the –55 °C to +150 °C operational range, preserving reliability and preventing thermal runaway. Thermal design must account for RthJC = 1.42 K/W and interface resistance to heatsink.
Does the VS-26MT140 support lead-free reflow soldering, and what is the recommended profile?
Yes, the VS-26MT140 features nickel-plated terminals qualified for lead-free soldering using Sn/Ag/Cu (SAC305) alloy. The recommended peak temperature is 260–275 °C, consistent with IPC-J-STD-020 Level 3a moisture sensitivity. The device's D-63 package withstands this profile without delamination or terminal lift, provided preheat and soak times follow standard reflow guidelines for thermally massive components.
How does the VS-26MT140 achieve electrical isolation, and what is its isolation voltage rating?
The VS-26MT140 achieves electrical isolation via its molded epoxy-insulated D-63 case, which separates all terminals from the metal baseplate. It is rated for 2700 V RMS isolation voltage (VINS) at 50 Hz for 1 second, verified per IEC 60065 and UL 60747-4. This enables safe mounting directly to grounded heatsinks in Class I equipment without additional insulating hardware.
Can the VS-26MT140 be used in 60 Hz applications, and how does its surge rating differ from 50 Hz?
Yes, the VS-26MT140 is fully rated for both 50 Hz and 60 Hz operation. Its non-repetitive surge current (IFSM) is 375 A at 60 Hz (8.3 ms) versus 360 A at 50 Hz (10 ms). This reflects the shorter half-cycle duration at 60 Hz, allowing marginally higher peak current without exceeding junction thermal limits. Designers must use the appropriate value based on local grid frequency.
What mechanical mounting torque is specified for the VS-26MT140's center screw?
The VS-26MT140 specifies a mounting torque of 2.0 Nm ± 10 % for the M4 center screw securing the device to the heatsink. This torque ensures optimal thermal contact (RthCS = 0.2 K/W) while avoiding case deformation or internal bond wire stress. Use of thermal grease and a flat, smooth mounting surface is required to achieve the rated thermal resistance.
VS-26MT140 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- 5-Square, D-63
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1.4 kV
- Current - Average Rectified (Io):
- 25 A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 1400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- D-63
VS-26MT140 FAQ
1.How can I place an order for VS-26MT140 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-26MT140 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-26MT140 reliable?
The price and inventory of VS-26MT140 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-26MT140 is usually 5 days.
3.What payment methods are accepted for VS-26MT140?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-26MT140 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-26MT140?
VS-26MT140 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-26MT140 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-26MT140?
For technical support, including VS-26MT140 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-26MT140 requirements.
6.How does Aetrix verify that VS-26MT140 is sourced from the original manufacturer or authorized distributors?
All VS-26MT140 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-26MT140 meets industry standards.
7.What is the process for return or replacement of VS-26MT140?
All VS-26MT140 units undergo pre-shipment inspection (PSI). If there is an issue with VS-26MT140, 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-26MT140 part is unused and in its original packaging.
Return procedure for VS-26MT140:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-26MT140 Tags
-
HDS10M-13
Diodes Incorporated
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CD-MBL106S
Bourns Inc.
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MB10S-13
Diodes Incorporated
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CD-MBL206SL
Bourns Inc.
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MB4S-TP
Micro Commercial Co
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MB6S-TP
Micro Commercial Co
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CD-MBL210S
Bourns Inc.
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BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
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CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
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