Name: /Tools-Info/Mbrf20100dt Osen
Brand: EstiSource
Availability: InStock

MBRF20100DT OSEN

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MBRF20100DT OSEN

Introduction
Material Composition
Manufacturing Process
Challenges and Limitations
Costing
Properties and Characteristics
Frequently asked questions
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MBRF20100DT OSEN (100V, 20A Dual Schottky Rectifier, TO-220AB)

by OSEN is a high-performance Schottky barrier rectifier diode designed for use in power conversion and switching applications. Rated at 100 volts and capable of handling up to 20 amperes of current, this device features two Schottky diodes in a common cathode configuration housed in a TO-220AB package. It is widely utilized in power supplies, inverters, and battery-powered systems due to its low forward voltage drop, fast recovery time, and superior thermal stability. The part’s efficiency helps reduce heat generation, making it ideal for thermally constrained designs.

How EstiSource Helps

EstiSource connects buyers to verified manufacturers and global distributors of power diodes like MBRF20100DT. We assist design engineers in validating alternatives for cost-efficiency, help procurement teams with volume sourcing, and streamline import logistics for brands like OSEN. Our BOM-level quote automation enables faster comparisons across quality grades (OEM, commercial, or surplus).

Why Choose EstiSource for Sourcing MBRF20100DT

At EstiSource, we provide more than just price visibility. Our expertise in power electronics, package compatibility, and compliance helps procurement professionals make informed decisions. With multi-region supply chain access, we help reduce delivery times, avoid counterfeit risks, and support technical audits. Choose EstiSource for precision sourcing, design validation, and scalable part procurement.

1. Material Composition

▶

Semiconductor Material: Silicon-based Schottky barrier

Die Attach: Silver epoxy or eutectic solder

Package Body: Molded epoxy with high thermal conductivity

Lead Frame: Copper alloy with tin or nickel plating

Thermal Pad/Baseplate: Integral copper for TO-220AB heat dissipation

Insulation Layer (if applicable): Polyimide or ceramic pad in externally insulated applications

2. Manufacturing Process

▶

Wafer Fabrication & Schottky Junction Formation:
Begins with high-purity silicon wafers processed with shallow barrier implants to form the Schottky contact region, enabling low Vf characteristics.

Die Separation & Metallization:
The wafer is diced into individual dies which are then metallized to create anode and cathode contact surfaces. The process ensures optimal current flow and minimal resistance.

Die Attachment & Lead Frame Integration:
Each die is attached to a copper lead frame using thermally conductive adhesives or eutectic bonding. The dual diodes are configured with a common cathode to enhance layout flexibility.

Wire Bonding:
Fine aluminum or gold wires connect the die terminals to the lead frame pads. Critical alignment is necessary to maintain low inductance paths.

Encapsulation & Molding:
The assembled unit is overmolded with thermally stable epoxy, forming the standard TO-220AB body which provides mechanical protection and aids thermal conduction.

Lead Finishing:
Leads are trimmed, formed, and plated with tin or nickel. This facilitates solderability and improves corrosion resistance during shelf life.

Electrical Testing & Sorting:
Final units undergo parametric testing for leakage current, forward voltage, thermal response, and surge capability to ensure compliance with electrical ratings.

Packaging & Quality Assurance:
Components are packed in anti-static trays or tubes with ESD protection and barcode labeling. QA includes visual inspection, sample reliability testing, and lot-level traceability.

3. Challenges and Limitations

▶

Thermal Management

While the diode is efficient, at high currents or elevated ambient temperatures, significant heat dissipation is required. Inadequate heat sinking can compromise performance.

Reverse Leakage Current

Schottky diodes inherently have higher reverse leakage compared to PN diodes, which can lead to power loss in certain low-load applications.

Voltage Derating

The device must be operated well below its peak voltage in designs with high transient voltages to prevent damage.

Package Stress

Improper soldering or thermal cycling can cause stress on the TO-220 package, potentially impacting reliability.

4. Costing

▶

Unit Price (Retail, Low Volume): ₹30 – ₹50 per piece

Bulk Pricing (1K+ units): ₹18 – ₹25 per piece (depending on brand and package marking)

Prototype Quantity (10–50 units): May include additional handling or logistics cost of ₹5–₹8 per unit

Sourcing Variables: Lead times, brand authenticity (OSEN vs alternatives), import duties for branded variants

Customization: Some suppliers offer pre-bent leads or insulation sleeves at ₹3–₹5 extra per unit

5. Properties and Characteristics

▶

Rated Voltage

100V reverse voltage (VRRM)

Forward Current Capacity

20A continuous average current (IF(AV))

Low Forward Voltage Drop

Typical 0.75V at rated current

Dual Diode Configuration

Common cathode, suitable for full-wave rectification

Fast Switching Speed

Ideal for high-frequency SMPS and DC-DC converters

Thermal Resistance

Excellent junction-to-case RθJC for efficient heat dissipation

Mounting

Through-hole with optional heat sink tab for TO-220AB

RoHS Compliant

Lead-free and environmentally safe packaging

6. Frequently Asked Questions

▶

Q1: What makes MBRF20100DT ideal for switching power supplies?

The diode’s low forward voltage and fast recovery characteristics reduce power loss, making it efficient for rectification in SMPS circuits.

Q2: Can this diode be used in automotive or battery systems?

Yes, it’s commonly used in automotive chargers, solar inverters, and battery-powered applications due to its high current handling and robust thermal profile.

Q3: What heat sink is recommended for this package?

A standard TO-220 clip-on or screw-mount aluminum heat sink is sufficient for up to 10W dissipation. Larger sinks or forced airflow may be needed for continuous high-load operation.

Q4: What alternatives exist if MBRF20100DT is unavailable?

Compatible equivalents include STMicroelectronics MBR20100CT or Vishay VS-20BQ100, which share similar specs and TO-220 packaging.

Q5: Is it suitable for parallel operation?

While possible, careful current sharing measures (e.g., ballast resistors) are required due to minor Vf mismatches between units.

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