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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Diodes Incorporated MB3510

Name: MB3510
Brand: Diodes Incorporated
SKU: MB3510
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MB3510

Manufacturer:: Diodes Incorporated

Category:: Bridge Rectifiers

Package:: 4-Square, MB

Datasheet:: MB3510.pdf

Description:: BRIDGE RECT 1PHASE 1KV 35A MB

Quantity:: RFQ Add To RFQ list

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Inventory:5,853

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Product details

Overview

MB3510 from Diodes Incorporated is a high-current silicon bridge rectifier with 1000 V maximum recurrent peak reverse voltage, 35.0 A average rectified output current at TC = 55°C, and 400 A non-repetitive peak forward surge current (8.3 ms), designed for AC-to-DC conversion in industrial power supplies and motor drive front-ends.

For engineers reviewing the MB3510 datasheet, MB3510 pinout, MB3510 application, or MB3510 equivalent, key selection factors include thermal resistance (R_JC = 2.5 °C/W), faston terminal mounting compatibility, UL 94V-0 case material, and RoHS-compliant lead-free finish (date code 0514+).

Technical Context

This single-phase full-wave bridge rectifier integrates four high-conductivity silicon diodes in a metal-case package optimized for bolt-down heat-sink mounting with silicone thermal compound. Its design supports 60 Hz resistive or inductive loads with derating curves defined up to 150°C junction temperature.

Thermal performance is characterized by junction-to-case resistance of 2.5 °C/W and case-to-ambient resistance of 0.5 °C/W (with heatsink), enabling sustained 35 A output under controlled thermal conditions. Reverse leakage remains ≤1.0 mA at 100°C and rated V_RRM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Withstands peak reverse voltage in high-voltage AC line applications without breakdown.
I(AV)	35.0 A at T_C = 55°C - Continuous DC output current capability with proper heatsinking.
I_FSM	400 A (8.3 ms half-sine) - Handles inrush surges during power-up of large capacitive or inductive loads.
V_F	1.2 V at 17.5 A - Forward voltage drop per diode pair, directly impacting conduction loss and thermal load.
R_JC	2.5 °C/W - Junction-to-case thermal resistance; determines minimum heatsink requirement for safe operation.
T_J, T_STG	–55°C to +150°C - Operating and storage range suitable for harsh industrial environments.

Pinout & Package

Package: Metal case with 0.25" faston terminals; UL 94V-0 flammability rating; 29 g mass; bolt-down mounting with #10 screw hole (H: 4.85–5.59 mm); requires silicone thermal compound interface to heatsink.

Pin/Terminal	Circuit Role	Design Meaning
AC1 / AC2	AC Input Terminals	Accept full-wave AC input; electrically symmetrical; no polarity distinction between terminals.
(+) Output	Positive DC Output Terminal	Delivers rectified positive DC voltage; marked with "+" symbol on case.
(–) Output	Negative DC Output Terminal	Serves as DC return/ground reference; marked with "–" symbol on case.

Key Features

Feature	Design Value
High thermal conductivity metal case	Enables direct bolt-down mounting to heatsinks with R_JA = 0.5 °C/W when properly interfaced.
UL 94V-0 flame-retardant case	Meets safety standards for enclosed industrial equipment requiring non-propagating combustion behavior.
Lead-free, RoHS-compliant finish	Complies with EU Directive 2002/95/EC (date code 0514+); exempted for high-temp solder/glass seals.
0.25" faston terminals	Supports universal snap-on, solder, or PCB-mounting configurations without custom tooling.

Applications

Industrial AC/DC Power Supply

Motor Drive Front-End Rectification

Use Scenario: 3-phase or single-phase line-powered 48 V/24 V DC bus generation in factory automation cabinets.

IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC mains to unregulated DC prior to filtering and regulation.

Use Value: 35 A continuous current and 400 A surge rating support high-power motor control modules with transient load demands.

Use Scenario: Input stage of variable-frequency drives powering 3 HP–10 HP induction motors.

IC Role / Device Role / Timing Role: High-current AC-to-DC conversion feeding bulk capacitor banks and IGBT gate drivers.

Use Value: Low R_JC (2.5 °C/W) and metal-case thermal path enable stable operation at elevated ambient temperatures (>70°C).

Welding Equipment Power Stage

Uninterruptible Power System (UPS) Charger

Use Scenario: Primary rectification in arc welding inverters handling intermittent 100% duty-cycle bursts.

IC Role / Device Role / Timing Role: Surge-tolerant bridge delivering high-current DC to inverter DC link capacitors.

Use Value: 400 A I_FSM withstands repetitive short-duration weld initiation currents without degradation.

Use Scenario: Battery charger front-end in line-interactive UPS units with 1–3 kVA output capacity.

IC Role / Device Role / Timing Role: Mains-fed rectifier supplying regulated charging current to sealed lead-acid or Li-ion battery banks.

Use Value: 1000 V V_RRM provides margin against line transients and brownout recovery spikes in utility-grade installations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current bridge rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBPC3510	Same 1000 V V_RRM, 35 A I(AV), but plastic DIP-4 package (no metal case); R_JC = 3.0 °C/W.	Limited to lower-power or forced-air-cooled designs; unsuitable for bolt-down heatsink integration.	Select when board-space constraints outweigh thermal performance needs and metal-case mounting is unnecessary.
KBPC3510	Identical electrical ratings, but epoxy-encapsulated with tinned copper leads; R_JC ≈ 3.5 °C/W; no faston terminals.	Requires PCB footprint or wire termination; not rated for direct heatsink mounting without external hardware.	Choose for cost-sensitive, medium-volume consumer-grade power supplies where thermal margins exceed 15°C.

Compared with MB3510, GBPC3510 trades metal-case thermal efficiency for compactness and KBPC3510 sacrifices mounting flexibility and thermal robustness for lower unit cost-both lack the bolt-down faston interface and UL 94V-0 case critical for industrial reliability.

Availability

MB3510 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front-ends, and welding equipment requiring stable component supply across extended production lifecycles.

Supply support for MB3510 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-reliability power management, signal integrity, and protection solutions.

The MB series bridges target high-current industrial rectification, emphasizing thermal robustness, mechanical durability, and compliance with safety-critical mounting standards.

FAQ

Is MB3510 RoHS compliant?

Yes, MB3510 features a lead-free finish compliant with EU Directive 2002/95/EC (RoHS), effective for date codes 0514 and later. Exemptions apply for high-temperature solder and glass seals per Annex Notes 5 and 7.

What is the recommended mounting torque for MB3510?

The datasheet specifies a maximum mounting torque of 20 in·lb for the #10 screw used to secure the device to the heatsink. Exceeding this value risks case deformation or internal bond damage, compromising thermal and electrical integrity.

Can MB3510 be used without a heatsink?

No. At 35 A average current, MB3510 requires bolt-down mounting to a heatsink with silicone thermal compound. Without it, junction temperature exceeds 150°C even at 25°C ambient, violating absolute maximum ratings and risking premature failure.

Why is MB3510 marked "Not Recommended for New Design"?

Diodes Incorporated recommends migrating to the GBPC35 series due to improved packaging (plastic DIP-4), broader distribution, and enhanced manufacturing consistency. MB3510 remains fully supported for legacy repair and continuity, with identical electrical specs and proven field reliability.

MB3510 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 4-Square, MB

Packaging:: Tube

Product Status:: Obsolete

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 1 kV

Current - Average Rectified (Io):: 35 A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 17.5 A

Current - Reverse Leakage @ Vr:: 10 µA @ 1000 V

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: QC Terminal

Supplier Device Package:: MB

MB3510 FAQ

1.How can I place an order for MB3510 through Aetrix?

Please submit a Request for Quotation (RFQ) for MB3510 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 MB3510 reliable?

The price and inventory of MB3510 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB3510 is usually 5 days.

3.What payment methods are accepted for MB3510?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB3510 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MB3510?

MB3510 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MB3510 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 MB3510?

For technical support, including MB3510 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB3510 requirements.

6.How does Aetrix verify that MB3510 is sourced from the original manufacturer or authorized distributors?

All MB3510 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 MB3510 meets industry standards.

7.What is the process for return or replacement of MB3510?

All MB3510 units undergo pre-shipment inspection (PSI). If there is an issue with MB3510, 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 MB3510 part is unused and in its original packaging.

Return procedure for MB3510:

1.Submit a request within 90 days.

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

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