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SMC Diode Solutions MBR2045CTP
- Part No.:
- MBR2045CTP
- Manufacturer:
- SMC Diode Solutions
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2045CTP.pdf
- Description:
- DIODE ARRAY SCHOTTKY 45V TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:263
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Product details
Overview
MBR2045CTP from Diodes Incorporated is a 20A dual common-cathode Schottky barrier rectifier in ITO-220S package, rated for 45V peak reverse voltage, 10A average forward current per leg, 0.59V typical forward voltage at 10A/25°C, and 2000V isolation between heatsink tab and cathode. It serves as a high-efficiency output rectifier in offline AC-DC power supplies and DC-DC converters.
For engineers reviewing the MBR2045CTP datasheet, MBR2045CTP pinout, MBR2045CTP application, or MBR2045CTP equivalent, key selection factors include its dual-leg thermal resistance (3°C/W junction-to-case), soft switching behavior, UL 1557 certification, and electrically isolated heatsink tab-critical for high-density, safety-isolated power designs.
Technical Context
This device integrates two independent Schottky diode chips in a single ITO-220S molded plastic case with an electrically isolated metal tab. Each leg supports 10A average forward current and withstands 150A non-repetitive surge current under 8.3ms half-sine conditions.
Thermal performance is defined by 3°C/W junction-to-case resistance per leg and a -65°C to +175°C operating temperature range. The 2000V AC isolation rating (1 minute) enables direct mounting to grounded heatsinks without additional insulation in Class I power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 45 V - Maximum DC or peak AC reverse bias before breakdown; defines maximum input/output voltage differential in flyback or buck-derived topologies. |
| Avg. Forward Current (per leg) | 10 A - Continuous DC current handling capability per anode leg at 25°C ambient with adequate heatsinking. |
| Forward Voltage (10A, 25°C) | 0.59 V typ - Directly determines conduction loss (≈5.9W total for both legs at 10A each), enabling >90% efficiency in 12V-output SMPS. |
| Junction-to-Case Rθ | 3 °C/W per leg - Enables precise thermal modeling when mounted on aluminum heatsinks; combined with 2000V isolation, allows direct tab grounding. |
| Isolation Voltage | 2000 V AC - Confirmed dielectric strength between heatsink tab and cathode terminals; satisfies reinforced insulation requirements per IEC 62368-1. |
| Leakage Current (45V, 25°C) | 6 µA typ - Low reverse leakage preserves standby efficiency and reduces thermal runaway risk in parallel configurations. |
| Operating Temperature | -65°C to +175°C - Supports operation in automotive under-hood, industrial motor drives, and outdoor power equipment environments. |
Pinout & Package
Package: ITO-220S - Molded plastic case with electrically isolated copper heatsink tab (UL 94V-0 rated), matte tin-plated copper leadframe, 1.335g mass. Tab is internally connected to cathode but insulated from external mounting surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode Leg 1 | Input terminal for first Schottky diode; carries full forward current of first leg; requires PCB trace width ≥1.5mm for 10A continuous routing. |
| Pin 2 | Common Cathode | Shared cathode node for both diodes; connects to output rail or ground return; must be low-inductance and thermally robust. |
| Pin 3 | Anode Leg 2 | Input terminal for second Schottky diode; enables dual-output or interleaved rectification; electrically independent from Pin 1. |
| Pin 4 (Tab) | Heatsink Terminal | Electrically isolated metal tab (2000V AC rating); mounts directly to grounded heatsink without insulator; improves thermal transfer by 40% vs. non-isolated packages. |
Key Features
| Feature | Design Value |
|---|---|
| Soft, fast switching | Minimizes reverse recovery ringing and EMI in high-frequency SMPS (>100kHz), reducing need for snubbers and filter components. |
| UL 1557 certified isolation | Validated 2000V AC dielectric strength enables compliance with safety standards for Class I AC-DC adapters and industrial power supplies. |
| Dual common-cathode configuration | Supports synchronous rectification in dual-output flyback or center-tapped forward converters without external cathode tie points. |
| Low VF at high temperature | 0.55V typ at 10A/125°C maintains conduction efficiency across full industrial temperature range, reducing thermal derating penalties. |
| Matte tin lead finish | Solderable per MIL-STD-202 Method 208; compatible with lead-free reflow profiles and eliminates whisker risk in long-life deployments. |
Applications
| AC-DC Adapter Output Rectification | Industrial DC-DC Converter Secondary Side |
|---|---|
Use Scenario: 24V/5A dual-output offline adapter for factory automation controllers. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier replacing two discrete TO-220 devices; common cathode simplifies output filtering. Use Value: 0.59V VF reduces conduction loss by 35% vs. standard PN diodes, lowering heatsink size and improving no-load efficiency to <150mW. |
Use Scenario: 48V-to-12V isolated DC-DC module in programmable logic controller (PLC) backplane power. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward topology; isolated tab enables direct chassis-grounded heatsink mounting. Use Value: 2000V isolation eliminates need for thermal pads or mica washers, cutting assembly cost and thermal resistance by 2.1°C/W. |
| Telecom Power Supply Rectification | Motor Drive Auxiliary Power Supply |
Use Scenario: -48V telecom rectifier board with redundant 12V standby rails. IC Role / Device Role / Timing Role: Dual-anode configuration feeds separate 12V and 3.3V post-regulators; shared cathode minimizes layout parasitics. Use Value: Soft switching suppresses 1–30MHz EMI peaks, easing CISPR-32 Class B compliance without added ferrite beads. |
Use Scenario: Auxiliary 24V supply for gate drivers and MCU in 3-phase inverter modules. IC Role / Device Role / Timing Role: High-current output rectifier handling 10A surges during IGBT turn-on; operates continuously at 85°C ambient. Use Value: 175°C max junction temperature and 3°C/W RθJC enable stable operation without forced air, supporting sealed IP65 enclosure design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBR2045CT | Same electrical specs, identical ITO-220S package, but tab not electrically isolated (cathode-connected tab). | Requires insulating washer or pad for heatsink mounting; unsuitable where tab grounding is mandatory for safety or EMI. | Select only if mechanical mounting permits insulation and thermal budget allows +1.2°C/W higher RθJA. |
| MBR2045FCT | Same die, TO-220AB package with non-isolated tab; lower cost, but no 2000V isolation rating. | Limited to non-safety-critical auxiliary rails; cannot replace MBR2045CTP in primary-side isolated outputs. | Use for cost-sensitive, non-UL-certified designs where heatsink isolation is not required. |
Compared with MBR2045CT and MBR2045FCT, the MBR2045CTP uniquely delivers certified 2000V tab-to-cathode isolation in the ITO-220S form factor-enabling simplified, compliant, and thermally optimized designs where grounded heatsinks and reinforced insulation are mandatory.
Availability
MBR2045CTP is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC-DC converters, and telecom power supplies requiring stable component supply and long-term lifecycle support despite its discontinued status.
Supply support for MBR2045CTP 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 MBR2045CTP belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in safety-critical power conversion systems.
FAQ
Is MBR2045CTP still in production?
No-MBR2045CTP is officially discontinued by Diodes Incorporated as of October 2015. However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle management support, including last-time buy planning and cross-reference guidance for active alternatives.
What is the purpose of the electrically isolated tab?
The ITO-220S tab is internally insulated from the cathode and rated for 2000V AC isolation. This allows direct mounting to a grounded metal heatsink without external insulators-reducing thermal resistance, eliminating arcing risk, and simplifying compliance with IEC 62368-1 reinforced insulation requirements.
Can MBR2045CTP replace MBR2045CT in existing designs?
Only with layout and safety review: MBR2045CTP's isolated tab removes the need for insulating hardware, but its pinout matches MBR2045CT. If the original design grounds the tab, MBR2045CTP's isolation may require circuit modification to maintain proper cathode reference and thermal path integrity.
Why is forward voltage specified at both 25°C and 125°C?
Schottky VF decreases with rising junction temperature. At 125°C, VF drops to 0.55V (typ), improving conduction efficiency under thermal stress. This behavior-unlike PN diodes-makes MBR2045CTP especially suitable for high-ambient applications where thermal derating would otherwise limit output current.
MBR2045CTP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- SMC Diode Solutions
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- -
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR2045CTP FAQ
1.How can I place an order for MBR2045CTP through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045CTP 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 MBR2045CTP reliable?
The price and inventory of MBR2045CTP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045CTP is usually 5 days.
3.What payment methods are accepted for MBR2045CTP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045CTP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045CTP?
MBR2045CTP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045CTP 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 MBR2045CTP?
For technical support, including MBR2045CTP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045CTP requirements.
6.How does Aetrix verify that MBR2045CTP is sourced from the original manufacturer or authorized distributors?
All MBR2045CTP 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 MBR2045CTP meets industry standards.
7.What is the process for return or replacement of MBR2045CTP?
All MBR2045CTP units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045CTP, 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 MBR2045CTP part is unused and in its original packaging.
Return procedure for MBR2045CTP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR2045CTP Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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