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Diodes Incorporated MBRF2045CT-LJ
- Part No.:
- MBRF2045CT-LJ
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
MBRF2045CT-LJ.pdf
- Description:
- DIODE ARR SCHOT 45V 10A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,749
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Product details
Overview
MBRF2045CT-LJ from Diodes Incorporated is a dual common-cathode Schottky barrier rectifier in ITO-220AB package, rated 45 V reverse voltage and 10 A average forward current per leg, with max 0.64 V forward voltage at 10 A and 25°C, used as polarity protection and recirculating diode in DC power supplies and motor drive circuits.
For engineers reviewing the MBRF2045CT-LJ datasheet, MBRF2045CT-LJ pinout, MBRF2045CT-LJ application, or MBRF2045CT-LJ equivalent, key selection criteria include low VF for efficiency, 180 A non-repetitive surge rating for transient robustness, TO-220F-compatible thermal resistance (RθJC = 4°C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This dual Schottky rectifier integrates two independent anode terminals sharing a common cathode, enabling synchronous half-wave rectification or bidirectional clamp functionality. Its guard ring die construction suppresses edge breakdown, supporting stable operation up to 150°C junction temperature.
Designed for high-efficiency DC/DC conversion and reverse polarity protection, it delivers low conduction loss (VF ≤ 0.64 V @ 10 A, 25°C) and minimal leakage (IR ≤ 0.1 mA @ 45 V, 25°C), with thermal performance optimized for heatsink-mounted ITO-220AB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage before avalanche; sets safe operating limit in 36–42 V nominal systems. |
| IO (per leg) | 10 A - Continuous average forward current per anode; supports 12–24 V power rails delivering ≥120 W with adequate heatsinking. |
| VF (max) | 0.64 V @ 10 A, 25°C - Low conduction loss reduces power dissipation to ≤6.4 W per leg at full load, improving system efficiency. |
| IFSM | 180 A - Non-repetitive surge rating for 8.3 ms half-sine; withstands inrush currents in motor start-up or capacitor charging. |
| RθJC | 4°C/W - Junction-to-case thermal resistance (ITO-220AB); enables ~45°C temperature rise per 10 W dissipated when mounted on standard heatsink. |
| IR (max) | 0.1 mA @ 45 V, 25°C - Ultra-low reverse leakage preserves battery life in always-on polarity protection circuits. |
| TJ range | −55°C to +150°C - Extended operating temperature supports under-hood automotive and industrial environments. |
Pinout & Package
Package: ITO-220AB (TO-220F-3), molded plastic case with matte tin-plated copper leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | First anode connection | Accepts positive input for first rectifier leg; electrically isolated from Pin 2. |
| Pin 2 (Cathode) | Common cathode node | Shared output terminal for both legs; must be connected to system ground or return rail. |
| Pin 3 (Anode 2) | Second anode connection | Accepts positive input for second rectifier leg; electrically isolated from Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Prevents premature edge breakdown under high dv/dt or reverse bias stress, ensuring stable VRRM hold-off in noisy power systems. |
| Low VF Schottky architecture | Reduces conduction losses by >30% vs. comparable silicon rectifiers, lowering thermal load in compact power modules. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring high-reliability discrete diodes. |
| Halogen- and antimony-free "Green" compound | Meets IEC 61249-2-21 and JEDEC J-STD-020 standards, enabling compliance in RoHS 2 and ELV-regulated designs. |
Applications
| DC Power Supply Input Protection | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Reverse-polarity protection at 12 V/24 V DC input of industrial SMPS. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier configured as OR-ing diode pair to block reverse current while passing forward current. Use Value: 0.64 V VF minimizes voltage drop and heat generation during normal operation, preserving input regulation margin. | Use Scenario: Recirculating diode across solenoid valves and fuel injectors in ECU driver stages. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback energy during transistor turn-off. Use Value: 180 A IFSM safely clamps 100+ A transient spikes without degradation, extending driver MOSFET lifetime. |
| Motor Drive Brake Circuit | Telecom DC-DC Converter Output Stage |
Use Scenario: Dynamic braking path in 24 V brushed DC motor controllers. IC Role / Device Role / Timing Role: Bidirectional clamp using common-cathode topology to dissipate back-EMF into supply rail. Use Value: Dual-leg isolation allows independent control of braking direction while sharing thermal mass via common cathode tab. | Use Scenario: Secondary-side synchronous rectification in isolated 48 V to 12 V telecom DC-DC converters. IC Role / Device Role / Timing Role: High-current output rectifier replacing MOSFETs where gate drive complexity is undesirable. Use Value: RθJC = 4°C/W enables direct heatsink mounting without thermal interface pads, simplifying mechanical layout. |
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-MBR2045CT | Same TO-220AB package; VF = 0.65 V @ 10 A, 25°C; RθJC = 2°C/W (lower thermal resistance). | Preferred where board-level heatsinking is limited and lower junction temperature is critical. | Select when thermal budget is tighter and TO-220AB mounting is acceptable instead of ITO-220AB. |
| ON Semiconductor MBR2045CTG | TO-220AB package; VF = 0.63 V @ 10 A, 25°C; not AEC-Q101 qualified; RθJC = 2.5°C/W. | Suitable for commercial-grade power supplies but not automotive under-hood use. | Choose for cost-sensitive industrial applications where AEC-Q101 is not required. |
Compared with MBRF2045CT-LJ, VS-MBR2045CT offers better thermal performance in TO-220AB but lacks ITO-220AB's insulated tab; MBR2045CTG provides slightly lower VF but no automotive qualification-making MBRF2045CT-LJ optimal for thermally constrained, AEC-Q101–mandated designs requiring electrical isolation.
Availability
MBRF2045CT-LJ is available at Aetrix Electronics and suitable for automotive ECUs, industrial DC power supplies, motor drive brake circuits, and telecom DC-DC converters requiring stable component supply and long-term lifecycle support.
Supply support for MBRF2045CT-LJ 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 MBRF20xxCT series belongs to Diodes' automotive-qualified Schottky rectifier product line, engineered for high-efficiency, high-surge, and high-temperature operation in safety-critical power conversion and protection roles.
FAQ
What is the difference between MBRF2045CT-LJ and MBR2045CT-LJ?
MBRF2045CT-LJ uses the ITO-220AB (TO-220F-3) package with an insulated tab, enabling direct heatsink mounting without electrical isolation hardware; MBR2045CT-LJ uses standard TO-220AB with electrically conductive tab. Both share identical electrical specs, but ITO-220AB adds creepage/clearance for high-voltage isolation requirements.
Is MBRF2045CT-LJ suitable for surface-mount assembly?
No - MBRF2045CT-LJ is through-hole mounted in ITO-220AB package and requires hole drilling and wave soldering or hand soldering. It is not compatible with reflow SMT processes. For SMT alternatives, consider DFN or PowerDI5 packages like Diodes' APD2045Q.
Does MBRF2045CT-LJ require a heatsink in typical operation?
Yes - at 10 A per leg and 0.64 V VF, power dissipation reaches ~6.4 W per leg. With RθJC = 4°C/W and ambient >50°C, junction temperature exceeds 125°C without heatsinking. A minimum 25 cm² aluminum heatsink is recommended for continuous 10 A operation.
Can MBRF2045CT-LJ replace a single 20 A Schottky in parallel configurations?
No - MBRF2045CT-LJ is rated 10 A per leg (20 A total only if both legs operate independently). It is not rated for 20 A single-leg current. Attempting 20 A through one anode violates SOA limits and risks thermal runaway due to uneven current sharing and localized heating.
MBRF2045CT-LJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 640 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
MBRF2045CT-LJ FAQ
1.How can I place an order for MBRF2045CT-LJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF2045CT-LJ 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 MBRF2045CT-LJ reliable?
The price and inventory of MBRF2045CT-LJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF2045CT-LJ is usually 5 days.
3.What payment methods are accepted for MBRF2045CT-LJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF2045CT-LJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF2045CT-LJ?
MBRF2045CT-LJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF2045CT-LJ 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 MBRF2045CT-LJ?
For technical support, including MBRF2045CT-LJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF2045CT-LJ requirements.
6.How does Aetrix verify that MBRF2045CT-LJ is sourced from the original manufacturer or authorized distributors?
All MBRF2045CT-LJ 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 MBRF2045CT-LJ meets industry standards.
7.What is the process for return or replacement of MBRF2045CT-LJ?
All MBRF2045CT-LJ units undergo pre-shipment inspection (PSI). If there is an issue with MBRF2045CT-LJ, 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 MBRF2045CT-LJ part is unused and in its original packaging.
Return procedure for MBRF2045CT-LJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRF2045CT-LJ Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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