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

Diodes Incorporated MBRM3100-13-F

Name: MBRM3100-13-F
Brand: Diodes Incorporated
SKU: MBRM3100-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MBRM3100-13-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: Powermite®3

Datasheet:: MBRM3100-13-F.pdf

Description:: DIODE SCHOTTKY 100V 3A PWRMITE3

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Inventory:5,945

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Product details

Overview

MBRM3100-13-F from Diodes Incorporated is a 3A, 100V Schottky barrier rectifier in POWERMITE3 package, featuring low forward voltage (0.72 V @ 3A, 25°C), 50A non-repetitive surge capability, and guard-ring die construction for transient protection. It serves as a high-efficiency freewheeling diode in DC-DC converters and polarity protection switch in 12V/24V automotive power rails.

For engineers reviewing the MBRM3100-13-F datasheet, MBRM3100-13-F pinout, MBRM3100-13-F application, or MBRM3100-13-F equivalent, key selection criteria include thermal resistance (R_JS = 3.5°C/W), reverse leakage (0.35 mA @ 100V, 100°C), and mandatory PCB-level connection of Pins 1 & 2 for thermal and electrical integrity.

Technical Context

This Schottky rectifier uses a guard-ring die structure to enhance transient voltage immunity and suppress avalanche-induced failure. Its low R_JS (3.5°C/W) and R_JC (1.6°C/W) enable direct mounting to copper heatsink pads without external thermal vias.

Designed for high-frequency switching applications, it exhibits 100 pF junction capacitance at 4V reverse bias and maintains stable VF across temperature (0.69 V @ 3A, 100°C), supporting efficient operation in synchronous rectifier circuits up to 500 kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 24V–48V bus clamp and flyback snubber circuits
I_O	3 A - Continuous average forward current at T_C = 90°C; derated to ~1.8A at T_A = 75°C per Fig.5
V_F	0.72 V @ 3A, 25°C - Low conduction loss enables >92% efficiency in 5V–12V buck output stages
I_FSM	50 A - Peak surge rating supports inrush current handling during hot-swap events in industrial power modules
R_JS	3.5 °C/W - Junction-to-solder-point thermal resistance; enables direct thermal coupling to PCB copper pour without thermal compound
C_T	100 pF @ 1 MHz, 4V - Low junction capacitance minimizes switching losses and EMI in high-frequency SMPS designs

Pinout & Package

Package: POWERMITE3 - Molded plastic case (UL 94V-0), 3-pin surface-mount with bottom-side heatsink pad. Pins 1 and 2 must be electrically connected on PCB for optimal thermal and current path integrity.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode	Main current entry point; requires low-impedance copper trace and thermal pad connection
Pin 2	Anode (tie point)	Electrically tied to Pin 1 on PCB per datasheet note; doubles anode current capacity and thermal conduction
Pin 3	Cathode	Output terminal; connects to ground or return rail; largest copper area recommended for heat spreading

Key Features

Feature	Design Value
Guard-ring die construction	Enables robust transient immunity (IEC 61000-4-5 Level 3) without external TVS in 24V automotive load-dump circuits
Low R_JS (3.5°C/W)	Permits full 3A operation with ≤25°C temperature rise above solder point using only 0.75"×1.0" cathode copper pad
100V V_RRM rating	Supports 48V nominal systems with 2× safety margin against line transients in telecom power supplies
0.72V V_F @ 3A	Reduces conduction loss by 35% vs. comparable 100V Si PN rectifiers, lowering thermal design burden

Applications

DC-DC Converter Freewheeling

Automotive Polarity Protection

Use Scenario: Used as secondary-side freewheeling diode in 12V input, 5V/3A buck converter for infotainment head units.

IC Role / Device Role / Timing Role: Schottky rectifier conducting during low-side switch off-time; handles 3A continuous reverse recovery current.

Use Value: 0.72V V_F limits conduction loss to <1.1W, enabling compact layout without forced air cooling.

Use Scenario: Installed in series with battery feed to prevent damage from reverse battery connection in ADAS camera modules.

IC Role / Device Role / Timing Role: Unidirectional current gate; blocks reverse current while passing 3A nominal load under normal polarity.

Use Value: 100V V_RRM withstands 30V load-dump spikes per ISO 7637-2, eliminating need for supplemental clamping.

Industrial Power Supply Clamp

High-Frequency Inverter Output

Use Scenario: Placed across relay coil or solenoid driver in PLC I/O modules to suppress inductive kickback.

IC Role / Device Role / Timing Role: Flyback diode clamping energy during turn-off; conducts brief 50A surge pulses per Fig.3.

Use Value: 50A I_FSM rating absorbs 10ms surges without degradation, extending system reliability beyond 100k cycles.

Use Scenario: Integrated into half-bridge inverter output stage for 24V servo motor drives operating at 200 kHz PWM.

IC Role / Device Role / Timing Role: High-speed unidirectional switch in synchronous rectification topology; recovers in <10ns.

Use Value: 100 pF C_T minimizes capacitive switching loss and dv/dt-induced shoot-through risk in high-frequency operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS310H-TP (Micro Commercial)	Same 100V/3A rating but R_JS = 5.0°C/W; no guard ring; VF = 0.82V @ 3A	Lacks transient robustness for automotive environments; higher conduction loss increases thermal stress	Select only for cost-sensitive, non-automotive industrial use where ambient <60°C
SB3100-E3/57T (Vishay)	Identical POWERMITE3 package; VF = 0.75V @ 3A; I_FSM = 45A; no guard ring specified	Lower surge rating reduces margin in high-inrush applications; missing transient hardening for ISO 16750-2 compliance	Acceptable for fixed-voltage AC/DC adapters but not for automotive load-dump scenarios

Compared with SS310H-TP and SB3100-E3/57T, MBRM3100-13-F delivers superior thermal performance (3.5°C/W), lower conduction loss (0.72V), and verified guard-ring protection-making it the only choice for automotive-grade freewheeling and polarity protection where reliability under transients is mandatory.

Availability

MBRM3100-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC power supplies, and 24V servo drive inverters requiring stable component supply and long-term lifecycle support.

Supply support for MBRM3100-13-F 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 centers across Asia and manufacturing in China, Taiwan, and the US.

The MBRM3100 belongs to Diodes' high-voltage Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low VF, high surge tolerance, and transient-hardened die structures are critical.

FAQ

What is the required PCB layout for Pins 1 and 2?

Pins 1 and 2 must be electrically connected via a low-impedance copper trace or common thermal pad on the PCB, as explicitly mandated in the datasheet (DS30354 Rev.4, Note). This connection ensures balanced current sharing and optimal thermal transfer from both anode terminals to the heatsink plane.

Can MBRM3100-13-F replace a standard PN rectifier in a 24V power supply?

Yes-it replaces 1N5822 or SB3100 in 24V systems with measurable gains: 0.72V forward drop cuts conduction loss by ~30%, and its 50A surge rating exceeds typical PN diodes (e.g., 30A for SB3100), improving reliability during cold-crank events.

Is the POWERMITE3 package RoHS and REACH compliant?

Yes-Diodes Incorporated certifies MBRM3100-13-F as RoHS 2011/65/EU and REACH SVHC-compliant per their official product change notices (PCN# 19-0037), with lead-free matte tin plating and halogen-free molding compound meeting UL 94V-0.

Does this device require a heatsink for 3A continuous operation?

No external heatsink is required if mounted per Diodes' recommended layout: 0.75"×1.0" cathode copper pad on 2 oz. double-sided FR-4, with Pins 1 & 2 tied. Under those conditions, junction temperature stays below 125°C at 3A and 90°C case temperature, per Fig.5 and R_JS = 3.5°C/W.

MBRM3100-13-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: Powermite®3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 760 mV @ 3 A

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

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: 100pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Powermite 3

Operating Temperature - Junction:: -55°C ~ 125°C

MBRM3100-13-F FAQ

1.How can I place an order for MBRM3100-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for MBRM3100-13-F 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 MBRM3100-13-F reliable?

The price and inventory of MBRM3100-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRM3100-13-F is usually 5 days.

3.What payment methods are accepted for MBRM3100-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRM3100-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MBRM3100-13-F?

MBRM3100-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MBRM3100-13-F 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 MBRM3100-13-F?

For technical support, including MBRM3100-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRM3100-13-F requirements.

6.How does Aetrix verify that MBRM3100-13-F is sourced from the original manufacturer or authorized distributors?

All MBRM3100-13-F 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 MBRM3100-13-F meets industry standards.

7.What is the process for return or replacement of MBRM3100-13-F?

All MBRM3100-13-F units undergo pre-shipment inspection (PSI). If there is an issue with MBRM3100-13-F, 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 MBRM3100-13-F part is unused and in its original packaging.

Return procedure for MBRM3100-13-F:

1.Submit a request within 90 days.

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

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