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Taiwan Semiconductor Corporation MBR4050PT
- Part No.:
- MBR4050PT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
MBR4050PT.pdf
- Description:
- DIODE ARR SCHOTT 50V 40A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
MBR4050PT from Diodes Incorporated is a 40A, 50V Schottky barrier rectifier in TO-3P package, featuring low forward voltage drop (0.70 V @ 20A, 25°C), high surge capability (400 A, 8.3 ms), and thermal resistance of 1.4 °C/W - used for polarity protection and free-wheeling in DC-DC converters and industrial power supplies.
For engineers reviewing the MBR4050PT datasheet, MBR4050PT pinout, MBR4050PT application, or MBR4050PT equivalent, key selection factors include its 50 V blocking rating, 40 A average output current at 125°C case temperature, low VF at high current, transient robustness via guard-ring die construction, and RoHS-compliant bright tin-plated leads.
Technical Context
This device employs Schottky barrier chip with integrated guard ring die construction to suppress transient-induced failure and improve ruggedness under repetitive surge stress. Its low VF and high IF(AV) enable efficient operation in low-voltage, high-current switching applications such as secondary-side rectification in SMPS.
The TO-3P package provides low thermal resistance (1.4 °C/W junction-to-case) when mounted on a heatsink, supporting continuous 40 A conduction at TC = 125°C. Capacitance is 1100 pF at 1 MHz and 4 V reverse bias, limiting high-frequency noise coupling in fast-switching circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive peak reverse voltage; defines safe operating limit in reverse-biased blocking state. |
| IO @ TC=125°C | 40 A - Average rectified current sustainable at 125°C case temperature with proper heatsinking. |
| VFM @ 20A, 25°C | 0.70 V - Forward voltage drop determining conduction loss and thermal load at nominal operating point. |
| IFSM (8.3 ms) | 400 A - Non-repetitive surge current handling capacity; critical for inrush and fault-tolerance design. |
| RJC | 1.4 °C/W - Junction-to-case thermal resistance; enables thermal modeling for heatsink sizing and reliability prediction. |
| CT @ 1 MHz | 1100 pF - Total junction capacitance affecting high-frequency switching behavior and EMI generation. |
Pinout & Package
TO-3P package: molded plastic case (UL 94V-0), bright tin-plated leads, polarity marked on body. Mounting requires heatsink contact via metal tab (cathode-connected). Weight: ~5.6 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to source/switch node; carries full load current into device during conduction. |
| Cathode (Metal Tab) | Output current exit point & thermal path | Electrically and thermally connected to heatsink; must be isolated from other potentials unless common-cathode configuration is intended. |
Key Features
| Feature | Design Value |
|---|---|
| Schottky barrier + guard ring die | Enhances transient immunity and reduces risk of avalanche-induced failure during voltage spikes. |
| Low VF at high current | 0.70 V @ 20A, 25°C minimizes I²R losses and improves system efficiency in 3.3–12 V output rails. |
| High surge rating | 400 A single half-sine surge supports robustness against motor startup currents and capacitor charging transients. |
| RoHS-compliant finish | Bright tin plating meets JEDEC solderability standards and eliminates lead-based assembly concerns. |
Applications
| DC-DC Converter Secondary Rectification | Industrial Motor Drive Free-Wheeling |
|---|---|
Use Scenario: High-efficiency 12 V output stage in isolated flyback or forward converter powering PLC I/O modules. IC Role / Device Role / Timing Role: Primary unidirectional current path converting transformer AC to regulated DC; conducts during switch-off phase. Use Value: Low 0.70 V forward drop reduces conduction loss by >15% vs. standard PN rectifiers, lowering thermal stress on heatsink. | Use Scenario: Clamping diode across DC bus in 3-phase inverter driving 5–10 kW induction motors. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback energy during IGBT turn-off transitions. Use Value: 400 A surge rating safely absorbs repetitive 200–300 A motor current transients without degradation. |
| Polarity Protection in Telecom Power Feeds | Redundant Power OR-ing in Server PSUs |
Use Scenario: Input protection for -48 V telecom rectifier modules where reverse connection must be blocked without significant voltage drop. IC Role / Device Role / Timing Role: Series-blocking element preventing damage from miswired field connections. Use Value: 50 V VRRM exceeds -48 V nominal with margin; 0.70 V VF avoids excessive insertion loss in high-current feed lines. | Use Scenario: OR-ing diode in dual-input 12 V server PSU enabling seamless switchover between primary and backup sources. IC Role / Device Role / Timing Role: Unidirectional current gate ensuring no backfeed between redundant supplies. Use Value: 40 A IO rating supports >500 W per rail; low RJC enables compact heatsink integration within tight PSU form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH05 | Same 50 V VRRM, 40 A IO, but TO-247AC package; RJC = 1.5 °C/W; VF = 0.72 V @ 20A. | Requires different mounting hardware; slightly higher thermal resistance limits max ambient in constrained layouts. | Select when TO-247 footprint compatibility or Vishay supply chain preference applies. |
| ON Semiconductor MBR4050CT | 50 V VRRM, 40 A IO, but dual-common-cathode TO-220AB package; VF = 0.71 V @ 20A; CT = 1050 pF. | Provides two independent 20 A paths; unsuitable for single-path 40 A designs without parallel derating. | Choose only for dual-output or split-rail topologies requiring separate anode routing. |
Compared with MBR4050PT, VS-40CPH05 offers identical electrical specs in a mechanically distinct package, while MBR4050CT trades single-path capability for dual-diode integration - both require layout and thermal reassessment before substitution.
Availability
MBR4050PT is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, DC-DC converter secondary rectification, and redundant OR-ing applications requiring stable component supply despite its obsolete status.
Supply support for MBR4050PT 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the US.
The MBR40xxPT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in industrial and telecom infrastructure equipment.
FAQ
Is MBR4050PT still in active production?
No - Diodes Incorporated has officially discontinued MBR4050PT (marked "OBSOLETE – PART DISCONTINUED" in DS23019 Rev. 9-4, July 2015). Aetrix Electronics maintains limited legacy stock with full traceability and offers lifecycle coordination support for ongoing production runs.
What is the correct mounting orientation for thermal performance?
The metal tab is the cathode and serves as the primary thermal path. It must be mounted flat against a heatsink using thermally conductive interface material and mechanical pressure (recommended torque: 0.5–0.7 N·m). Anode lead must remain electrically isolated from the heatsink.
Can MBR4050PT replace MBR4045PT or MBR4060PT in existing designs?
Yes - MBR4050PT is pin- and package-compatible with other MBR40xxPT variants. Its 50 V VRRM sits between 45 V and 60 V ratings; replacement is acceptable if system peak reverse voltage stays ≤50 V and thermal margin remains sufficient at 40 A.
Does this part meet automotive AEC-Q101 requirements?
No - MBR4050PT is not AEC-Q101 qualified. It is rated for industrial temperature range (–65°C to +150°C) and intended for telecom, computing, and industrial power systems, not automotive applications requiring qualification testing.
MBR4050PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 770 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 50 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
MBR4050PT FAQ
1.How can I place an order for MBR4050PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR4050PT 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 MBR4050PT reliable?
The price and inventory of MBR4050PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR4050PT is usually 5 days.
3.What payment methods are accepted for MBR4050PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR4050PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR4050PT?
MBR4050PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR4050PT 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 MBR4050PT?
For technical support, including MBR4050PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR4050PT requirements.
6.How does Aetrix verify that MBR4050PT is sourced from the original manufacturer or authorized distributors?
All MBR4050PT 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 MBR4050PT meets industry standards.
7.What is the process for return or replacement of MBR4050PT?
All MBR4050PT units undergo pre-shipment inspection (PSI). If there is an issue with MBR4050PT, 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 MBR4050PT part is unused and in its original packaging.
Return procedure for MBR4050PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR4050PT Tags
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BAV99-7-F
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