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Diodes Incorporated SBR2045CT
- Part No.:
- SBR2045CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR2045CT.pdf
- Description:
- DIODE ARRAY SBR 45V 10A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:45
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Product details
Overview
SBR2045CT from Diodes Incorporated is a 20A dual common-cathode super barrier rectifier in TO220AB package, rated for 45V peak reverse voltage and featuring 0.43V forward voltage at 10A/25°C. It delivers soft fast switching, low conduction loss, and high-temperature stability up to +150°C, making it suitable for high-efficiency AC/DC secondary-side rectification in server power supplies.
For engineers reviewing the SBR2045CT datasheet, SBR2045CT pinout, SBR2045CT application, or SBR2045CT equivalent, key selection criteria include forward voltage at 10A/125°C (0.49V), thermal resistance (2°C/W junction-to-case), leakage current at 125°C (≤50mA), and TO220AB mechanical compatibility with standard heatsinks.
Technical Context
This dual-diode rectifier integrates two independent SBR® elements sharing a common cathode terminal, enabling synchronous rectification or dual-output DC-DC conversion. Its patented super barrier structure replaces traditional PN junctions with metal-semiconductor interfaces, reducing forward voltage while maintaining low reverse leakage.
The device operates across –65°C to +150°C with 2°C/W thermal resistance (TO220AB, 50×50×23 mm heatsink), and supports non-repetitive surge currents up to 120A (8.3ms half-sine). Soft recovery minimizes EMI in high-frequency SMPS designs without requiring snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 45 V - Maximum blocking capability per diode leg; defines usable input range in 36V nominal systems. |
| Avg. Forward Current (Total) | 20 A - Total continuous output current capacity across both legs; enables compact 20A single-package solution. |
| Forward Voltage @ 10A/25°C | 0.43 V - Low conduction loss reduces heat generation and improves efficiency in high-current secondary-side rectification. |
| Forward Voltage @ 10A/125°C | 0.49 V - Stable VF over temperature ensures predictable thermal design up to industrial operating limits. |
| Junction-to-Case Thermal Resistance | 2 °C/W - Enables direct mounting to heatsink; supports >15W dissipation with ≤30°C temperature rise at full load. |
| Surge Current (IFSM) | 120 A - Withstands inrush and transient overload without degradation; critical for hot-plug and fault-tolerant PSUs. |
| Leakage Current @ 45V/125°C | 50 mA - Low reverse leakage preserves efficiency and reliability under elevated ambient conditions. |
Pinout & Package
Package: TO220AB - Molded plastic case (UL 94V-0), matte tin-plated copper leadframe, 1.85g weight, 3-pin through-hole mounting with isolated tab (cathode-connected tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first diode element | Connects to transformer secondary winding or switch node; carries full forward current of first leg. |
| Pin 2 (Cathode) | Common cathode terminal | Shared output node for both diodes; electrically connected to metal tab for thermal and electrical grounding. |
| Pin 3 (Anode 2) | Anode of second diode element | Independent anode for dual-output or interleaved rectification; enables balanced current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® Technology | Replaces conventional PN junction with engineered metal-semiconductor barrier, achieving 0.43V VF at 10A without Schottky-level leakage. |
| Soft Fast Switching | Controlled reverse recovery minimizes voltage overshoot and EMI, eliminating need for external snubbers in 100–500kHz SMPS. |
| High-Temperature Stability | VF drift <13% from 25°C to 125°C; IR remains ≤50mA at 125°C, ensuring robust operation in enclosed power enclosures. |
| Green Package Compliance | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb); RoHS-compliant matte tin finish. |
Applications
| Server Power Supply Rectification | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in 12V/20A output rails of redundant ATX or EPS12V server PSUs. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier replacing discrete Schottkys; provides low-VF path for transformer secondary current. Use Value: 0.43V VF at 10A reduces conduction loss by ~35% vs. comparable 45V Schottky, lowering heatsink requirements and improving system efficiency. | Use Scenario: Output rectification in isolated 24V/10A + 5V/10A dual-rail industrial DC-DC modules. IC Role / Device Role / Timing Role: Dual-anode configuration enables independent winding rectification for cross-regulated outputs. Use Value: Common cathode simplifies PCB layout and filtering; soft recovery prevents noise coupling between rails during switching transitions. |
| Telecom Brick Power Modules | LED Driver Secondary-Side Rectification |
Use Scenario: High-density 48V input telecom power bricks delivering 12V/15A output with strict thermal constraints. IC Role / Device Role / Timing Role: Primary rectifier in synchronous flyback or forward converter secondary stage. Use Value: 2°C/W RθJC allows direct tab mounting to chassis, enabling passive cooling in space-constrained 1U form factors. | Use Scenario: Constant-current LED driver output stage for high-bay lighting (36V/15A string). IC Role / Device Role / Timing Role: Low-loss rectifier converting transformer output to stable DC bus before current regulation. Use Value: Stable VF across –40°C to +85°C ambient ensures consistent lumen output and driver efficiency over environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH045 | Same 45V/20A rating but uses trench Schottky architecture; VF = 0.47V @ 10A/25°C; higher IR (100mA @ 125°C). | Higher leakage may impact efficiency in thermally constrained telecom modules. | Prefer SBR2045CT where low IR at high temperature is critical. |
| ON Semiconductor MUR2040CT | Ultrafast recovery rectifier (not SBR); VF = 0.92V @ 10A/25°C; slower switching, higher loss. | Requires snubber network; unsuitable for >200kHz designs due to recovery tail. | Select only if cost sensitivity outweighs efficiency and EMI targets. |
Compared with VS-20CPH045 and MUR2040CT, the SBR2045CT offers the lowest VF at elevated temperature and softest recovery-making it optimal for high-efficiency, high-frequency, thermally demanding secondary-side rectification where leakage and EMI must be minimized.
Availability
SBR2045CT is available at Aetrix Electronics and suitable for server power supply rectification, industrial DC-DC converter output stages, and telecom brick power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for SBR2045CT 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 SBR® super barrier rectifier product line was developed specifically for high-efficiency, high-reliability secondary-side rectification in switched-mode power supplies targeting datacenter, industrial, and telecom applications.
FAQ
Is the SBR2045CT pin-compatible with standard TO220AB dual-diode rectifiers?
Yes, SBR2045CT uses the industry-standard TO220AB outline with Anode1–Cathode–Anode2 pin assignment (pin 1–2–3), matching mechanical and footprint requirements of legacy dual-diode rectifiers like MUR2040CT and SB2040CT. The cathode is internally tied to the metal tab, which must be electrically isolated unless used as ground reference.
What is the maximum continuous power dissipation for SBR2045CT at 100°C case temperature?
At TC = 100°C, the derated average forward current per leg is 7.5A (per Figure 1), resulting in total dissipation of approximately 11.2W (2 × 7.5A × 0.49V). With RθJC = 2°C/W, this yields a 22.4°C junction-to-case rise, keeping TJ below 122.4°C - within the –65°C to +150°C operating limit.
Does SBR2045CT require a heatsink in 20A continuous operation?
Yes. At full 20A total current (10A per leg), power dissipation exceeds 10W. Without a heatsink, junction temperature would exceed 150°C even at 25°C ambient. A minimum 50×50×23 mm aluminum heatsink is specified in the datasheet to maintain safe thermal operation under full load.
How does SBR® technology differ from conventional Schottky rectifiers in terms of reliability?
SBR® uses a proprietary barrier engineering process that suppresses thermionic emission at high temperature, reducing reverse leakage by up to 5× versus comparable Schottkys at 125°C. This improves long-term reliability in high-ambient environments and eliminates thermal runaway risk in parallel configurations.
SBR2045CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 540 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBR2045CT FAQ
1.How can I place an order for SBR2045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR2045CT 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 SBR2045CT reliable?
The price and inventory of SBR2045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR2045CT is usually 5 days.
3.What payment methods are accepted for SBR2045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR2045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR2045CT?
SBR2045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR2045CT 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 SBR2045CT?
For technical support, including SBR2045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR2045CT requirements.
6.How does Aetrix verify that SBR2045CT is sourced from the original manufacturer or authorized distributors?
All SBR2045CT 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 SBR2045CT meets industry standards.
7.What is the process for return or replacement of SBR2045CT?
All SBR2045CT units undergo pre-shipment inspection (PSI). If there is an issue with SBR2045CT, 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 SBR2045CT part is unused and in its original packaging.
Return procedure for SBR2045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR2045CT Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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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
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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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