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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated MBR1030

Name: MBR1030
Brand: Diodes Incorporated
SKU: MBR1030
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MBR1030

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: MBR1030.pdf

Description:: DIODE SCHOTTKY 30V 10A TO220AC

Quantity:: RFQ Add To RFQ list

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Inventory:6,014

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Product details

Overview

MBR1030 from Diodes Incorporated is a 10A, 30V Schottky barrier rectifier in TO-220AC package, designed for low-voltage, high-frequency rectification with 0.84V forward voltage at 10A/25°C and 150A non-repetitive surge capability. It serves as a freewheeling diode in DC-DC converters and polarity protection element in 12V automotive power rails.

For engineers reviewing the MBR1030 datasheet, MBR1030 pinout, MBR1030 application, or MBR1030 equivalent, key selection criteria include its 2.5°C/W junction-to-case thermal resistance, 400pF typical capacitance at 1MHz, guard ring die construction for transient robustness, and RoHS-compliant tin-plated terminals suitable for lead-free reflow.

Technical Context

This Schottky rectifier uses a planar epitaxial die structure with integrated guard ring to suppress edge breakdown and improve surge immunity. Its low forward voltage minimizes conduction loss in high-current switching paths, while its fast recovery (inherently <10ns) eliminates reverse recovery charge-critical for synchronous rectifier replacement in SMPS.

The device operates across –65°C to +150°C with derated current above +125°C case temperature, and requires heatsinking per its 2.5°C/W R_θJC to sustain full 10A average output. Capacitance of 400pF at 4V reverse bias impacts high-frequency EMI filtering performance in buck converter outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 24V nominal systems with transients.
I_O	10 A @ T_C = +125°C - Continuous DC output current rating when mounted on heatsink; sets minimum heatsink requirement.
V_FM	0.84 V @ 10A, 25°C - Forward voltage drop; determines conduction loss of 8.4W at full load, critical for thermal design.
I_FSM	150 A (8.3ms half-sine) - Surge withstand capability; supports motor startup and capacitor charging inverter applications.
R_θJC	2.5 °C/W - Junction-to-case thermal resistance; enables calculation of junction temperature rise under given power dissipation.
C_T	400 pF @ 1MHz, 4V - Junction capacitance; influences high-frequency noise coupling and snubber design in switching nodes.
I_RM	0.1 mA @ 30V, 25°C - Peak reverse leakage; low value ensures minimal standby power loss in battery-backed systems.

Pinout & Package

Package: TO-220AC - Molded plastic case with UL 94V-0 flammability rating, 2.24g mass, tin-plated copper leads solderable per MIL-STD-202 Method 208.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Current entry point during forward conduction	Connected to input/source side; must handle full 10A RMS current and 150A surge without bond wire fusing.
Cathode (Pin 2)	Current exit point during forward conduction	Electrically tied to metal tab; serves as primary thermal path to heatsink and common return node.
Cathode (Pin 3)	Redundant cathode connection	Dual-cathode configuration lowers series resistance and improves current sharing across die terminals.

Key Features

Feature	Design Value
Guard ring die construction	Suppresses surface leakage and edge avalanche, enabling stable 30V blocking without premature breakdown under dv/dt stress.
Low forward voltage (0.84V)	Reduces conduction loss by >30% vs. comparable PN rectifiers, directly improving efficiency in 5–12V output converters.
150A surge rating	Withstands inrush currents from large bulk capacitors or motor windings without parametric shift or catastrophic failure.
TO-220AC mechanical robustness	UL 94V-0 housing and 2.5°C/W thermal path support industrial-grade mounting and long-term reliability in vibration-prone environments.

Applications

DC-DC Converter Freewheeling

Automotive Polarity Protection

Use Scenario: Used as secondary-side freewheeling diode in non-synchronous buck converters delivering 5–12V at up to 10A.

IC Role / Device Role / Timing Role: Provides low-loss current path during high-side switch off-time; replaces slower PN diodes to reduce switching losses.

Use Value: 0.84V V_F cuts conduction loss by ~4W vs. 1.1V alternative, lowering heatsink requirements and improving light-load efficiency.

Use Scenario: Installed in series with battery feed to protect vehicle ECUs from reverse battery connection.

IC Role / Device Role / Timing Role: Acts as series-blocking element; conducts only during correct polarity, blocking reverse current flow.

Use Value: 0.1mA I_R at 25°C ensures negligible standby drain; 150A I_FSM survives jump-start surges without degradation.

High-Frequency Inverter Output

Industrial Power Supply Input Rectification

Use Scenario: Output rectifier in 20–100kHz resonant inverters for LED drivers and induction heating controls.

IC Role / Device Role / Timing Role: Converts high-frequency AC to DC with minimal switching loss; leverages zero-recovery behavior.

Use Value: Absence of reverse recovery charge eliminates associated EMI spikes and gate drive stress on MOSFETs in half-bridge topologies.

Use Scenario: Input-stage rectifier in 24V/48V industrial SMPS with active PFC front-end.

IC Role / Device Role / Timing Role: Handles high peak currents from PFC output ripple; placed after bulk storage capacitor.

Use Value: 2.5°C/W R_θJC allows direct mounting to chassis ground plane, simplifying thermal management in space-constrained enclosures.

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-10BQ030	Same 30V V_RRM, 10A I_O, but 0.72V V_F at 10A/25°C and TO-220AB package with isolated tab.	Isolated tab enables floating heatsink mounting; lower V_F reduces loss but requires verification of layout clearance.	Select when electrical isolation from heatsink is required or when sub-0.75V forward drop is prioritized over legacy footprint compatibility.
ON Semiconductor MBR1030CT	Dual-die configuration in TO-220AB; each die rated 10A/30V but shares common cathode, yielding 20A parallel capability.	Supports higher current designs via single-package dual-diode topology; not a drop-in replacement due to different pinout and thermal profile.	Select when system-level current demand exceeds 10A and board space favors dual-diode integration over discrete placement.

Compared with VS-10BQ030 and MBR1030CT, the MBR1030 offers proven thermal interface compatibility with legacy TO-220AC heatsinks, consistent 0.84V forward drop across temperature, and documented guard ring reliability-making it preferable for cost-sensitive, volume automotive and industrial replacements where isolation or dual-diode functionality is unnecessary.

Availability

MBR1030 is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, automotive polarity protection, and high-frequency inverter output requiring stable component supply despite its obsolete status through controlled legacy sourcing.

Supply support for MBR1030 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 California, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

The MBR1030 belongs to Diodes' Schottky rectifier product line, engineered for high-efficiency power conversion in automotive, industrial, and computing applications where low forward voltage and robust surge handling are essential.

FAQ

Is MBR1030 still in production?

No-Diodes Incorporated officially discontinued the MBR1030 as of June 2015, marking it obsolete in datasheet DS23009 Rev. 11-4. Aetrix Electronics maintains limited legacy stock and supports controlled end-of-life procurement with full traceability and authenticity verification per batch.

What is the thermal pad mounting requirement for TO-220AC?

The metal tab (cathode) must be mounted to a heatsink using thermally conductive insulating washer or pad if isolation is needed, or direct metal-to-metal contact if grounded. Minimum mounting torque is 0.5–0.7 N·m; insufficient clamping increases R_θJC beyond 2.5°C/W, risking thermal runaway at full load.

Can MBR1030 replace a standard PN rectifier in existing designs?

Yes-its 30V V_RRM and 10A I_O match common 1N5408/1N5404 footprints, but verify layout clearance: Schottky leakage (0.1mA) is higher than PN diodes (<1µA), and reverse recovery is absent-eliminating snubber needs but potentially increasing EMI in some topologies.

Does MBR1030 meet automotive AEC-Q101 requirements?

No-the MBR1030 is not AEC-Q101 qualified. While widely used in automotive aftermarket and non-safety-critical modules, Diodes does not certify this part for automotive grade; for AEC-Q101 compliance, consider the AEC-Q101-qualified SBRA1030 or SBRA2030 series from the same manufacturer.

MBR1030 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Obsolete

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 30 V

Current - Average Rectified (Io):: 10A

Voltage - Forward (Vf) (Max) @ If:: 840 mV @ 10 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 30 V

Capacitance @ Vr, F:: 400pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

Operating Temperature - Junction:: -65°C ~ 150°C

MBR1030 FAQ

1.How can I place an order for MBR1030 through Aetrix?

Please submit a Request for Quotation (RFQ) for MBR1030 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 MBR1030 reliable?

The price and inventory of MBR1030 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1030 is usually 5 days.

3.What payment methods are accepted for MBR1030?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1030 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MBR1030?

MBR1030 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MBR1030 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 MBR1030?

For technical support, including MBR1030 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1030 requirements.

6.How does Aetrix verify that MBR1030 is sourced from the original manufacturer or authorized distributors?

All MBR1030 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 MBR1030 meets industry standards.

7.What is the process for return or replacement of MBR1030?

All MBR1030 units undergo pre-shipment inspection (PSI). If there is an issue with MBR1030, 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 MBR1030 part is unused and in its original packaging.

Return procedure for MBR1030:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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