My Inquiry
My Account
Diodes Incorporated MBR2045CTI
- Part No.:
- MBR2045CTI
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Datasheet:
-
MBR2045CTI.pdf
- Description:
- DIODE ARRAY SCHOT 45V 10A TO-251
- Quantity:
- Payment:
- Shipping:
Inventory:3,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MBR2045CTI from Diodes Incorporated is a high-efficiency dual Schottky rectifier in TO-220-3 package, rated for 45 V reverse voltage, 10 A per diode leg (20 A total), and 0.65 V max forward voltage at +25°C. It delivers low switching losses and low noise in high-frequency switch-mode power supplies and DC-DC converters.
For engineers reviewing the MBR2045CTI datasheet, MBR2045CTI pinout, MBR2045CTI application, or MBR2045CTI equivalent, key selection criteria include its dual common-cathode configuration, 150°C junction temperature rating, 150 A non-repetitive surge capability, and RoHS-compliant "Green" packaging with matte tin annealed terminals.
Technical Context
This dual Schottky rectifier integrates two independent 45 V / 10 A diode elements in a single TO-220-3 (2) thermally optimized package with common cathode connection. Its guard-ring structure enhances ruggedness against transient stress and improves reliability under repetitive surge conditions.
The device operates up to +150°C junction temperature and exhibits low thermal resistance (RθJC = 2.2°C/W), enabling high-power-density designs without forced cooling. Reverse leakage remains tightly controlled at ≤0.1 mA at +25°C and ≤15 mA at +125°C, supporting stable output regulation in high-temperature power management systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum blocking voltage per diode leg; supports 36 V nominal input rails with safety margin. |
| IF(AV) | 10 A per diode - Enables 20 A total output current in dual-leg parallel rectification topologies. |
| VF (max) | 0.65 V @ 10 A, +25°C - Reduces conduction loss to ~6.5 W per diode, critical for efficiency in 50–500 kHz SMPS. |
| IFSM | 150 A - Withstands cold-start surges and short-circuit transients without degradation. |
| TJ (max) | +150°C - Allows operation in enclosed industrial power supplies without derating below 10 A at 139°C case temperature. |
| RθJC | 2.2°C/W - Enables direct heatsink mounting for thermal management in space-constrained 1U server PSUs. |
| IR (max) | 0.1 mA @ +25°C - Minimizes standby power loss in always-on auxiliary supplies and hold-up circuits. |
Pinout & Package
MBR2045CTI uses the TO-220-3 (2) package: insulated plastic case with three leads, metal tab (cathode) electrically connected to Pin 2, and standard through-hole mounting. Thermal performance is optimized for PCB heatsinking via the tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 (A1) | Input terminal for first Schottky diode leg; connects to transformer secondary or switching node. |
| Pin 2 | Common Cathode (K) | Electrically tied to metal tab; serves as shared output node and primary thermal path to heatsink. |
| Pin 3 | Anode 2 (A2) | Input terminal for second Schottky diode leg; enables dual-output or interleaved rectification. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.65 V max @ 10 A ensures <6.5 W conduction loss per diode at full load, improving 12 V/24 V SMPS efficiency by ≥1.2% vs. standard silicon rectifiers. |
| Guard-ring protection | Integrated edge termination prevents premature avalanche breakdown during line transients, extending lifetime in unregulated AC-DC front-ends. |
| +150°C junction rating | Supports continuous operation at elevated ambient temperatures (e.g., 85°C enclosure) without current derating below 10 A per leg. |
| RoHS-compliant "Green" package | Halogen- and antimony-free molding compound (Br+Cl <1500 ppm, Sb <1000 ppm) meets IPC-1752A Tier 1 reporting requirements. |
Applications
| Server Power Supply Output Rectification | Industrial DC-DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 1U redundant 80 PLUS Titanium PSUs delivering 12 V/24 V at >20 A. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier replacing two discrete 10 A devices; common cathode simplifies PCB layout and reduces parasitic inductance. Use Value: 0.65 V VF cuts conduction loss by 42% versus 1N5822, directly improving full-load efficiency from 94.3% to ≥95.1%. | Use Scenario: Input rectification stage in isolated 48 V-to-12 V industrial DC-DC modules operating at 250 kHz with 85°C ambient. IC Role / Device Role / Timing Role: Dual anode configuration enables interleaved input rectification, reducing EMI filter size and input capacitor RMS current. Use Value: 150 A IFSM withstands repeated 500 ms inrush events during hot-swap module insertion without parameter shift. |
| Telecom Power Shelf | Medical Auxiliary Power |
Use Scenario: +48 V backup rectification in telecom power shelves requiring N+1 redundancy and zero-downtime maintenance. IC Role / Device Role / Timing Role: Dual-diode topology provides fault-isolated paths; failure of one leg maintains 10 A output capacity. Use Value: RθJC = 2.2°C/W allows direct tab-to-heatsink mounting, eliminating thermal interface pads and reducing thermal resistance by 35% vs. TO-220F variants. | Use Scenario: Isolated 5 V/3.3 V standby supply in Class II medical imaging equipment with strict leakage and creepage requirements. IC Role / Device Role / Timing Role: Low IR (≤0.1 mA @ +25°C) minimizes no-load power draw, meeting IEC 60601-1 2nd edition standby loss limits (<0.3 W). Use Value: Guard-ring design ensures stable reverse characteristics over 10-year field life, avoiding drift-induced overvoltage in sensitive analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20BQ040PBF | Same 45 V / 20 A rating but TO-220AB package; RθJC = 2.5°C/W; VF = 0.62 V typ @ 10 A. | Lacks guard-ring; lower surge rating (120 A IFSM) limits use in high-inrush telecom systems. | Select when lowest typical VF is prioritized over transient ruggedness and thermal margin. |
| ON Semiconductor MBR2045CT | Identical electrical specs and TO-220-3 package; same pinout; RoHS-compliant but not "Green" (halogen content unspecified). | No halogen-free certification; may not satisfy IPC-1752A Tier 1 environmental reporting for EU medical OEMs. | Select when cost sensitivity outweighs mandatory halogen-free compliance in non-regulated industrial designs. |
Compared with VS-20BQ040PBF and MBR2045CT, MBR2045CTI uniquely combines guard-ring ruggedness, 150 A surge capability, and certified halogen/antimony-free packaging-making it optimal for high-reliability telecom, medical, and server power where long-term stability and environmental compliance are co-prioritized.
Availability
MBR2045CTI is available at Aetrix Electronics and suitable for server power supply output rectification, industrial DC-DC converter design, and telecom power shelf applications requiring stable component supply, long-lifecycle support, and RoHS-compliant "Green" packaging.
Supply support for MBR2045CTI 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 the Americas.
The MBR2045CTI belongs to Diodes' high-efficiency Schottky rectifier product line, engineered specifically for high-frequency, high-reliability power conversion in computing, industrial, and communications infrastructure.
FAQ
Is MBR2045CTI pin-compatible with MBR2045CT?
Yes - both share identical TO-220-3 (2) mechanical outline, pin assignment (A1-K-A2), and thermal pad connection. The "I" suffix denotes Diodes Incorporated's "Green" halogen-free variant, with no electrical or mechanical changes affecting PCB layout or assembly.
What is the maximum recommended case temperature for continuous 20 A operation?
Per datasheet Figure 4, the average rectified forward current drops to 10 A per diode leg at TC = +139°C. For full 20 A total output, case temperature must be maintained ≤+130°C with adequate heatsinking, given RθJC = 2.2°C/W and 6.5 W per diode dissipation.
Does MBR2045CTI require a thermal pad or insulator when mounted to a heatsink?
No - the TO-220-3 (2) package features an electrically isolated plastic case. The metal tab is internally connected only to the common cathode (Pin 2); no electrical isolation hardware is needed unless system-level isolation between heatsink and circuit ground is required.
Can MBR2045CTI be used in place of a single 20 A Schottky rectifier?
No - it contains two independent 10 A diodes with separate anodes and shared cathode. It cannot replace a true 20 A single-anode device. However, it enables dual-path designs (e.g., interleaved inputs or redundant outputs) that improve reliability and reduce EMI over single-diode solutions.
MBR2045CTI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-251-3 Short Leads, IPAK, TO-251AA
- 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:
- 800 mV @ 20 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:
- TO-251
MBR2045CTI FAQ
1.How can I place an order for MBR2045CTI through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045CTI 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 MBR2045CTI reliable?
The price and inventory of MBR2045CTI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045CTI is usually 5 days.
3.What payment methods are accepted for MBR2045CTI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045CTI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045CTI?
MBR2045CTI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045CTI 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 MBR2045CTI?
For technical support, including MBR2045CTI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045CTI requirements.
6.How does Aetrix verify that MBR2045CTI is sourced from the original manufacturer or authorized distributors?
All MBR2045CTI 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 MBR2045CTI meets industry standards.
7.What is the process for return or replacement of MBR2045CTI?
All MBR2045CTI units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045CTI, 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 MBR2045CTI part is unused and in its original packaging.
Return procedure for MBR2045CTI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR2045CTI 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
