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Diodes Incorporated MBR2045CT-LJ
- Part No.:
- MBR2045CT-LJ
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2045CT-LJ.pdf
- Description:
- DIODE ARR SCHOTT 60V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:7,623
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Product details
Overview
MBR2045CT-LJ from Diodes Incorporated is a 20A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 45V peak repetitive reverse voltage and 0.64V max forward voltage at 10A and +25°C. It delivers low conduction loss and high surge capability (180A IFSM), making it suitable for polarity protection and recirculating diode functions in DC power supplies and motor drive circuits.
For engineers reviewing the MBR2045CT-LJ datasheet, MBR2045CT-LJ pinout, MBR2045CT-LJ application, or MBR2045CT-LJ equivalent, key selection criteria include per-leg forward voltage drop, thermal resistance (2°C/W junction-to-case), reverse leakage (<0.1mA at 45V), RoHS-compliant lead-free finish, and AEC-Q101 qualification for reliability-critical designs.
Technical Context
This dual-diode configuration integrates two independent Schottky junctions sharing a common cathode terminal, enabling synchronous half-wave rectification or bidirectional current clamping. Its guard ring die construction enhances ruggedness against transient overvoltage and improves surge survivability without compromising low VF performance.
The device operates across –55°C to +150°C junction temperature range and is optimized for surface-mount-compatible through-hole mounting on heatsinks. Thermal design relies on its 2°C/W RθJC (TO-220AB) and requires derating above +75°C ambient per the published forward current derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum non-repetitive reverse voltage each diode leg withstands without breakdown |
| IO (per leg) | 10 A - Continuous average forward current per diode at +25°C ambient with adequate heatsinking |
| VF (max) | 0.64 V @ 10A, +25°C - Directly determines conduction loss and thermal load in high-current paths |
| IFSM | 180 A - Peak non-repetitive surge current capability supports inrush and fault transients |
| IR (max) | 0.1 mA @ 45V, +25°C - Low leakage preserves efficiency in standby and high-impedance bias networks |
| RθJC | 2 °C/W - Enables precise junction temperature estimation when mounted on standard heatsink |
| TJ Range | –55°C to +150°C - Supports operation in automotive under-hood and industrial control environments |
Pinout & Package
Package: TO-220AB (Type C), molded plastic case with matte tin-plated copper leadframe, UL 94V-0 rated, weight ≈1.95 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first Schottky diode leg; connects to source of reverse-polarity or inductive flyback energy |
| Pin 2 (Center) | Cathode (Common) | Shared output node for both diodes; must be routed with low-inductance, high-current trace to ground or return rail |
| Pin 3 (Right) | Anode 2 | Input terminal for second Schottky diode leg; enables dual-path rectification or redundancy |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves edge termination robustness, reducing risk of premature avalanche failure during voltage transients |
| Low VF Schottky architecture | Reduces forward power loss by ≥30% vs. comparable silicon PN rectifiers at 10A, lowering heatsink requirements |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test conditions |
| Halogen- and antimony-free "Green" molding compound | Meets JEDEC J-STD-020 moisture sensitivity Level 1 and environmental compliance mandates for global OEMs |
Applications
| DC Power Supply Input Stage | Polarity Protection Circuit |
|---|---|
Use Scenario: AC/DC front-end rectification in 24V industrial SMPS where efficiency and thermal margin are critical. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier providing full-wave or center-tapped secondary rectification with shared cathode output. Use Value: 0.64V VF minimizes conduction loss at 10A, reducing heat generation and enabling smaller heatsinks than Si alternatives. | Use Scenario: Reverse-voltage blocking in 12V/24V battery-powered equipment to prevent damage from incorrect battery insertion. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing or back-to-back protection switch. Use Value: Low 0.64V forward drop ensures minimal voltage penalty during normal operation while blocking >45V reverse faults. |
| Motor Drive Flyback Clamp | DC-DC Converter Synchronous Rectification |
Use Scenario: Recirculating path for inductive kickback in brushed DC motor H-bridge drivers operating up to 45V bus. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamp absorbing stored inductor energy during PWM off-time. Use Value: 180A IFSM rating handles high-energy transients without degradation; <0.1mA IR prevents parasitic drain in sleep mode. | Use Scenario: Secondary-side synchronous rectification in isolated 5–12V output DC-DC converters for telecom and computing systems. IC Role / Device Role / Timing Role: Dual-anode configuration allows independent gate drive control of each leg for phase-split rectification. Use Value: Dual common-cathode topology simplifies PCB layout and reduces component count versus discrete diode pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR2045CTG | Same electrical specs; green halogen-free variant with identical TO-220AB package and marking code | No functional difference; selected when stricter halogen content reporting is required per customer spec | Drop-in replacement if "Green" compliance documentation is mandatory |
| STPS20H45CG | 20A dual common-cathode Schottky, 45V VRRM, VF = 0.62V @ 10A but higher RθJA (20°C/W vs. 2°C/W) | Requires larger heatsink area due to higher thermal resistance; not AEC-Q101 qualified | Prefer MBR2045CT-LJ where automotive qualification or superior thermal performance is needed |
Compared with MBR2045CTG and STPS20H45CG, the MBR2045CT-LJ offers verified AEC-Q101 qualification and lowest junction-to-case thermal resistance (2°C/W), enabling higher sustained current in space-constrained, thermally demanding applications without derating.
Availability
MBR2045CT-LJ is available at Aetrix Electronics and suitable for DC power supply input stages, polarity protection circuits, motor drive flyback clamps, and DC-DC converter synchronous rectification requiring stable component supply and long-term industrial availability.
Supply support for MBR2045CT-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MBR20xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered for commercial and automotive power conversion applications demanding low VF, high surge tolerance, and extended temperature operation.
FAQ
What is the maximum continuous forward current per diode leg at +100°C ambient?
At +100°C ambient temperature, the MBR2045CT-LJ's per-leg average forward current is derated to approximately 6.5A, based on the published forward current derating curve (Figure 4) and assuming proper heatsinking per the recommended pad layout. This reflects thermal limits imposed by its 2°C/W RθJC and 15°C/W RθJA ratings.
Is MBR2045CT-LJ suitable for use in automotive under-hood applications?
Yes - MBR2045CT-LJ is AEC-Q101 qualified and rated for TJ = –55°C to +150°C, meeting core reliability and temperature requirements for under-hood automotive modules such as body control units and HVAC actuators, provided mechanical mounting and thermal interface comply with Diodes' application guidelines.
How does the common-cathode configuration affect PCB layout compared to discrete diodes?
The common-cathode structure consolidates both cathodes into a single center pin, reducing net count and enabling symmetric, low-inductance routing of high-current return paths. This simplifies thermal management by concentrating heat dissipation at one location and eliminates mismatch risks inherent in paired discrete diodes.
Does MBR2045CT-LJ require snubber circuits in typical switching applications?
No - unlike PN junction rectifiers, this Schottky device exhibits no reverse recovery charge (Qrr ≈ 0), eliminating voltage spikes and EMI caused by reverse recovery. Snubbers are generally unnecessary unless external circuit parasitics induce ringing exceeding 45V reverse peaks, which is rare in properly laid out 24V–45V systems.
MBR2045CT-LJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 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 @ 60 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MBR2045CT-LJ FAQ
1.How can I place an order for MBR2045CT-LJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045CT-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 MBR2045CT-LJ reliable?
The price and inventory of MBR2045CT-LJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045CT-LJ is usually 5 days.
3.What payment methods are accepted for MBR2045CT-LJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045CT-LJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045CT-LJ?
MBR2045CT-LJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045CT-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 MBR2045CT-LJ?
For technical support, including MBR2045CT-LJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045CT-LJ requirements.
6.How does Aetrix verify that MBR2045CT-LJ is sourced from the original manufacturer or authorized distributors?
All MBR2045CT-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 MBR2045CT-LJ meets industry standards.
7.What is the process for return or replacement of MBR2045CT-LJ?
All MBR2045CT-LJ units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045CT-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 MBR2045CT-LJ part is unused and in its original packaging.
Return procedure for MBR2045CT-LJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR2045CT-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
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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