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Diodes Incorporated MBRF3045CT-LJ
- Part No.:
- MBRF3045CT-LJ
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
MBRF3045CT-LJ.pdf
- Description:
- DIODE ARR SCHOT 45V 15A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,875
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Product details
Overview
MBRF3045CT-LJ from Diodes Incorporated is a 30A dual common-cathode Schottky barrier rectifier in ITO-220AB package, rated for 45V peak reverse voltage, 0.62V max forward voltage at 15A/25°C, and 0.1mA max leakage current at 45V/25°C; used for polarity protection and recirculating diode functions in DC power supplies and motor drive circuits.
For engineers reviewing the MBRF3045CT-LJ datasheet, MBRF3045CT-LJ pinout, MBRF3045CT-LJ application, or MBRF3045CT-LJ equivalent, key selection criteria include its 200A non-repetitive surge rating, 4°C/W junction-to-case thermal resistance, AEC-Q101 qualification, RoHS/Green compliance, and ITO-220AB mechanical form factor with insulated tab.
Technical Context
This dual Schottky rectifier integrates two independent 15A legs sharing a common cathode terminal, enabling synchronous half-wave rectification or bidirectional freewheeling paths. Its guard ring die construction provides transient overvoltage protection without external snubbers.
Designed for high-efficiency DC-DC conversion and reverse-polarity safeguarding, it operates across –55°C to +150°C with thermal derating curves defined for both TO-220AB and ITO-220AB packages; the ITO-220AB variant features an insulated tab for direct heatsink mounting without isolation hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating range in unidirectional DC bus protection. |
| IO (per leg) | 15 A - Continuous average forward current per diode leg; supports 30A total dual-leg output when used in parallel configuration. |
| VF (max) | 0.62 V @ 15A, 25°C - Low conduction loss enables >92% efficiency in 12V–48V SMPS outputs. |
| IFSM | 200 A - Single half-sine surge capability allows robust handling of motor startup or capacitor inrush transients. |
| RθJC | 4 °C/W - Junction-to-case thermal resistance for ITO-220AB; enables 75W dissipation with 300°C/W heatsink interface. |
| IR (max) | 0.1 mA @ 45V, 25°C - Minimal leakage preserves battery standby life in always-on industrial controllers. |
| AEC-Q101 | Qualified - Meets automotive-grade reliability requirements for under-hood and infotainment power stages. |
Pinout & Package
Package: ITO-220AB (TO-220F-3), insulated tab, 3-terminal plastic case with matte tin-plated copper leadframe; UL 94V-0 molding compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | First diode anode | Connects to input source side; accepts reverse-biased voltage up to 45V during freewheeling. |
| Pin 2 (Cathode) | Common cathode node | Shared output node for both diodes; must be routed with low-inductance trace for high-frequency switching stability. |
| Pin 3 (Anode B) | Second diode anode | Independent anode for second leg; enables dual-path rectification or redundant polarity protection. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during voltage transients, eliminating need for external TVS in 24V industrial PLC inputs. |
| Low VF (0.58V typ @ 15A, 125°C) | Reduces conduction loss by 35% vs. standard silicon rectifiers, lowering thermal load in sealed enclosures. |
| Insulated tab (ITO-220AB) | Enables direct mounting to grounded heatsinks without mica washers or thermal pads, simplifying assembly and improving thermal transfer. |
| Halogen & antimony free | Meets IPC-1752A material declaration requirements for aerospace and medical OEMs requiring full substance traceability. |
Applications
| DC Power Supply Input Stage | Motor Drive Freewheeling Path |
|---|---|
Use Scenario: AC/DC front-end rectification in 48V telecom power systems with active PFC stage. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier providing low-loss, high-speed output rectification after boost converter. Use Value: 0.62V VF minimizes heat generation at 15A continuous load, reducing heatsink size by 40% versus standard diodes. | Use Scenario: H-bridge motor driver with inductive back-EMF suppression during PWM commutation. IC Role / Device Role / Timing Role: Recirculating diode clamping inverter leg voltage spikes during turn-off transitions. Use Value: 200A IFSM withstands 10ms stall-current surges without degradation, extending field reliability in HVAC blowers. |
| Polarity Protection Circuit | Battery Backup System |
Use Scenario: Reverse-voltage safeguard on 24V vehicle-mounted data acquisition modules. IC Role / Device Role / Timing Role: Series-connected blocking diode preventing damage from accidental battery reversal. Use Value: 45V VRRM exceeds automotive load-dump transients (ISO 7637-2 Pulse 5a), eliminating need for upstream TVS. | Use Scenario: OR-ing diode in dual-supply 12V backup system for railway signaling controllers. IC Role / Device Role / Timing Role: Common-cathode dual diode enabling seamless switchover between main and backup battery sources. Use Value: Matched VF characteristics (<±2mV) between legs ensure balanced current sharing and prevent thermal runaway. |
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-30CPH045 | Same 45V VRRM, 30A total, but TO-247AC package; RθJC = 1.5°C/W; VF = 0.65V max @ 15A. | Higher thermal performance but larger footprint; requires different heatsink interface and PCB cutout. | Select when junction temperature must stay <125°C under 25A continuous load with limited airflow. |
| ON Semiconductor MBR3045CT | Identical electrical specs, same TO-220AB (non-insulated) package; no isolated tab; RθJC = 2°C/W. | Lower thermal resistance but mandates insulating hardware for heatsink mounting; not drop-in for ITO-220AB layouts. | Select only if board layout already uses non-insulated TO-220AB footprint and isolation is handled externally. |
Compared with VS-30CPH045 and MBR3045CT, the MBRF3045CT-LJ uniquely combines AEC-Q101 qualification, ITO-220AB insulation, and 4°C/W thermal resistance-making it optimal for space-constrained automotive and industrial designs where safety isolation and reliability are co-prioritized.
Availability
MBRF3045CT-LJ is available at Aetrix Electronics and suitable for DC power supply input stages, motor drive freewheeling paths, and polarity protection circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for MBRF3045CT-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 centers across Asia and manufacturing facilities in China, Taiwan, and the U.S.
This device belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical power conversion and protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the maximum junction temperature for MBRF3045CT-LJ?
The absolute maximum junction temperature is +150°C, with continuous operation supported from –55°C to +150°C ambient. Derating begins at +25°C ambient per Figure 4: at +100°C ambient, maximum average forward current drops to 7.5A per leg due to thermal resistance limits.
Is MBRF3045CT-LJ pin-compatible with MBR3045CT?
No-MBRF3045CT-LJ uses ITO-220AB (insulated tab) while MBR3045CT uses TO-220AB (non-insulated). Pin numbering matches (Anode–Cathode–Anode), but mechanical mounting differs: the insulated tab eliminates need for isolation hardware, whereas TO-220AB requires mica washers or silicone pads.
Does this part support reflow soldering?
Yes-MBRF3045CT-LJ is qualified for lead-free reflow per J-STD-020, with peak temperature tolerance up to 260°C for 30 seconds. The matte tin annealed finish ensures reliable wetting, and moisture sensitivity level 1 permits unlimited floor life without dry-pack requirements.
How does the guard ring structure improve reliability?
The integrated guard ring mitigates electric field crowding at the silicon periphery, raising the effective breakdown voltage margin by ~15% during fast transients. This reduces failure rate in 24V industrial controls exposed to ISO 16750-2 load dump events without adding external clamping components.
MBRF3045CT-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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 620 mV @ 15 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
MBRF3045CT-LJ FAQ
1.How can I place an order for MBRF3045CT-LJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF3045CT-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 MBRF3045CT-LJ reliable?
The price and inventory of MBRF3045CT-LJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF3045CT-LJ is usually 5 days.
3.What payment methods are accepted for MBRF3045CT-LJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF3045CT-LJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF3045CT-LJ?
MBRF3045CT-LJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF3045CT-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 MBRF3045CT-LJ?
For technical support, including MBRF3045CT-LJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF3045CT-LJ requirements.
6.How does Aetrix verify that MBRF3045CT-LJ is sourced from the original manufacturer or authorized distributors?
All MBRF3045CT-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 MBRF3045CT-LJ meets industry standards.
7.What is the process for return or replacement of MBRF3045CT-LJ?
All MBRF3045CT-LJ units undergo pre-shipment inspection (PSI). If there is an issue with MBRF3045CT-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 MBRF3045CT-LJ part is unused and in its original packaging.
Return procedure for MBRF3045CT-LJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRF3045CT-LJ Tags
-
BAV99-7-F
Diodes Incorporated
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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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