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Diodes Incorporated MBR4030PT
- Part No.:
- MBR4030PT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-3P-3, SC-65-3
- Datasheet:
-
MBR4030PT.pdf
- Description:
- DIODE ARRAY SCHOTT 30V 40A TO-3P
- Quantity:
- Payment:
- Shipping:
Inventory:7,498
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Product details
Overview
MBR4030PT from Diodes Incorporated is a 40A, 30V 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 in low-voltage, high-frequency inverters and polarity protection circuits.
For engineers reviewing the MBR4030PT datasheet, MBR4030PT pinout, MBR4030PT application, or MBR4030PT equivalent, key selection criteria include peak repetitive reverse voltage (30 V), average rectified output current at 125°C (40 A), forward voltage at elevated temperature (0.60 V @ 20A, 125°C), junction-to-case thermal resistance, and RoHS-compliant bright tin-plated leads.
Technical Context
This device employs Schottky barrier chip construction with integrated guard ring for transient protection, enabling fast switching and minimal reverse recovery loss. Its low VF and high IO support high-efficiency power conversion in DC-DC stages and freewheeling paths.
Rated for operation from –65°C to +150°C, it delivers stable performance under high thermal stress when mounted on heatsinks. The 1100 pF typical junction capacitance and 10,000 V/s dV/dt rating suit high-frequency inverter and SMPS applications where capacitive loading and rapid voltage transients are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in polarity protection and clamp circuits. |
| IO @ TC = 125°C | 40 A - Continuous average forward current at case temperature of 125°C; defines usable DC output capacity with heatsink. |
| VFM @ 20A, 25°C | 0.70 V - Forward voltage drop at nominal load and room temperature; directly determines conduction loss (14 W at 20 A). |
| IFSM (8.3 ms) | 400 A - Peak non-repetitive surge current; supports inrush tolerance in motor drives and UPS systems. |
| RJC | 1.4 °C/W - Junction-to-case thermal resistance; enables thermal design with known heatsink interface conditions. |
| CT @ 1 MHz, 4 V | 1100 pF - Junction capacitance; impacts high-frequency switching noise and EMI filter sizing in inverters. |
| dV/dt | 10,000 V/s - Voltage slew rate immunity; ensures stability during fast commutation in half-bridge topologies. |
Pinout & Package
TO-3P package: isolated metal tab (cathode), three leads - anode (center), cathode (outer two leads tied internally). Mounting via center tab requires electrically insulating thermal interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (center lead) | Input current entry point | Connected to source-side of rectification path; carries full load current into device. |
| Cathode (outer leads, internally joined) | Output current exit point | Electrically common node delivering rectified output; bonded to metal tab for thermal conduction. |
| Metal tab (cathode-connected) | Thermal & electrical terminal | Serves as primary heat path to heatsink; must be electrically isolated unless system ground reference permits. |
Key Features
| Feature | Design Value |
|---|---|
| Schottky barrier with guard ring | Enhances transient immunity without external TVS; reduces failure risk in inductive load switching. |
| Low VF at 125°C (0.60 V) | Maintains efficiency under thermal stress - critical for enclosed industrial power supplies. |
| RoHS-compliant bright tin plating | Ensures reliable solderability per MIL-STD-202 Method 208; eliminates lead-free process compatibility concerns. |
| UL 94V-0 molded plastic case | Provides flame-retardant mechanical housing suitable for safety-certified end equipment. |
| 1.4 °C/W RJC | Enables predictable thermal design with standard heatsink mounting pressure and thermal paste. |
Applications
| Photovoltaic Inverter DC Link | Industrial Motor Drive Freewheeling |
|---|---|
Use Scenario: Bidirectional energy flow in string-level PV inverters with unidirectional DC link rectification. IC Role / Device Role / Timing Role: High-current, low-loss output rectifier handling up to 40 A continuous at 125°C case temperature. Use Value: 0.60 V forward drop at 125°C minimizes conduction loss in thermally constrained enclosures. | Use Scenario: Clamping inductive kickback from 3-phase BLDC motor phases during PWM commutation. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode absorbing 400 A surge transients (8.3 ms) without thermal runaway. Use Value: Guard ring structure suppresses avalanche-induced failure during repeated motor stall events. |
| Telecom 48V Input Polarity Protection | Server PSU Output Rectification |
Use Scenario: Reverse-polarity safeguard on redundant 48 V DC inputs in telecom shelf power distribution units. IC Role / Device Role / Timing Role: Low-VF series-blocking rectifier ensuring <1.2 V total drop across dual-device configuration. Use Value: 0.70 V @ 25°C and 0.60 V @ 125°C enable efficient protection without derating input voltage margin. | Use Scenario: Secondary-side synchronous rectification replacement in 12 V/200 W server VRMs. IC Role / Device Role / Timing Role: High-current output rectifier delivering 40 A average current with minimal thermal rise. Use Value: 1.4 °C/W RJC allows direct mounting to cold plate, eliminating need for additional thermal interface layers. |
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-40CPQ030 | Same 30 V VRRM, 40 A IO, but TO-247AC package; RJC = 1.25 °C/W; VF = 0.67 V @ 20A, 25°C. | Lower thermal resistance suits higher ambient environments; TO-247AC footprint differs from TO-3P mounting holes. | Select when thermal budget is tighter and board layout allows TO-247AC mechanical revision. |
| ON Semiconductor MBR4030CT | 30 V VRRM, 40 A IO, TO-220AB package; VF = 0.72 V @ 20A, 25°C; RJC = 1.7 °C/W. | Higher VF and thermal resistance; intended for lower-power density designs with forced air cooling. | Select only if TO-220AB footprint is fixed and 0.02 V higher VF is acceptable in efficiency budget. |
Compared with VS-40CPQ030 and MBR4030CT, the MBR4030PT offers superior thermal interface via TO-3P metal tab while balancing VF and surge robustness - optimal for conduction-limited, heatsink-mounted industrial rectification where mechanical fit and transient resilience are prioritized.
Availability
MBR4030PT is available at Aetrix Electronics and suitable for photovoltaic inverters, industrial motor drives, telecom power distribution units, and server power supply rectification requiring stable component supply despite its obsolete status.
Supply support for MBR4030PT 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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and communications markets.
The MBR4030PT belongs to Diodes' high-current Schottky rectifier product line, engineered for low-loss, high-reliability AC/DC and DC/DC conversion in thermally demanding environments.
FAQ
Is MBR4030PT still in active production?
No - Diodes Incorporated has officially discontinued the MBR4030PT (documented as "OBSOLETE – PART DISCONTINUED" in DS23019 Rev. 9-4, July 2015). Aetrix Electronics maintains legacy inventory with full traceability and provides lifecycle coordination support for ongoing production programs.
What is the correct mounting orientation for thermal performance?
The TO-3P metal tab is cathode-connected and serves as the primary thermal path. It must be mounted flat against a heatsink using thermally conductive, electrically insulating material (e.g., mica washer + thermal grease) unless system grounding allows direct metal-to-metal contact.
How does the guard ring improve reliability in inductive switching?
The integrated guard ring prevents edge breakdown during voltage transients by shaping the electric field at the silicon periphery. This suppresses localized avalanche and delays thermal runaway during repetitive 400 A surges - verified in JEDEC-standard 8.3 ms half-sine testing.
Can MBR4030PT replace MBR4040PT in a 40 V design?
No - MBR4030PT has a 30 V peak repetitive reverse voltage (VRRM). Using it in a 40 V circuit risks catastrophic reverse breakdown. The 40 V rating of MBR4040PT is not interchangeable; minimum derating margin requires ≥20% over system peak reverse voltage.
MBR4030PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-3P-3, SC-65-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 30 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-3P
MBR4030PT FAQ
1.How can I place an order for MBR4030PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR4030PT 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 MBR4030PT reliable?
The price and inventory of MBR4030PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR4030PT is usually 5 days.
3.What payment methods are accepted for MBR4030PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR4030PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR4030PT?
MBR4030PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR4030PT 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 MBR4030PT?
For technical support, including MBR4030PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR4030PT requirements.
6.How does Aetrix verify that MBR4030PT is sourced from the original manufacturer or authorized distributors?
All MBR4030PT 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 MBR4030PT meets industry standards.
7.What is the process for return or replacement of MBR4030PT?
All MBR4030PT units undergo pre-shipment inspection (PSI). If there is an issue with MBR4030PT, 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 MBR4030PT part is unused and in its original packaging.
Return procedure for MBR4030PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR4030PT Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
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BAV99WT1G
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