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Diodes Incorporated SBR3045CT
- Part No.:
- SBR3045CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR3045CT.pdf
- Description:
- DIODE ARRAY SBR 45V 15A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:50
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Product details
Overview
SBR3045CT from Diodes Incorporated is a 45 V, 30 A total (15 A per leg) dual common-cathode super barrier rectifier in TO220AB package, featuring 0.55 V max forward voltage at 15 A and 0.5 mA max reverse leakage at 45 V/25°C. It delivers low conduction loss and high-temperature stability for DC-DC converter output rectification and freewheeling in industrial power supplies.
For engineers reviewing the SBR3045CT datasheet, SBR3045CT pinout, SBR3045CT application, or SBR3045CT equivalent, key selection criteria include its dual-leg current rating, ultra-low VF at high junction temperature, rugged avalanche capability versus Schottky diodes, and TO220AB thermal resistance of 2°C/W per leg with heatsink.
Technical Context
This device integrates two independent super barrier rectifier dies in a single TO220AB package with common cathode configuration. Its patented SBR® technology enables higher avalanche energy rating than standard Schottky diodes while maintaining sub-0.55 V forward drop at rated current.
Thermal performance is defined per leg: RθJC = 2°C/W (TO220AB, with 50×50×23 mm Al heatsink), enabling sustained 15 A operation up to +125°C case temperature. Reverse leakage remains ≤100 mA at 45 V and +125°C, supporting reliable blocking in high-ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage per leg; defines safe DC blocking capability in 36 V nominal systems. |
| IO (per leg) | 15 A - Continuous average forward current per anode leg; supports 30 A total dual-leg output in parallel-configured supplies. |
| VF (max) | 0.55 V @ 15 A, 25°C - Low conduction loss reduces power dissipation by >30% vs. standard fast recovery diodes at same current. |
| IR (max) | 0.5 mA @ 45 V, 25°C - Ultra-low leakage minimizes standby power loss and thermal runaway risk in high-temp operation. |
| IFSM | 200 A @ 8.3 ms - Robust surge handling enables reliable inrush and transient protection without external snubbers. |
| RθJC | 2 °C/W per leg - Enables direct heatsink mounting for efficient thermal management in compact 1U power designs. |
Pinout & Package
TO220AB package: 3-terminal, insulated tab, vertical mounting with screw-hole heatsink interface. Cathode terminal shared between both anodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first rectifier leg | Accepts AC or switched input; electrically isolated from tab and Anode 2. |
| Anode 2 (A2) | Input terminal for second rectifier leg | Enables dual-output or interleaved topology use; shares cathode with A1. |
| Cathode (K) | Common output node | Single low-impedance return path for both legs; connected to metal tab for thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® technology | Superior avalanche ruggedness vs. Schottky diodes-enables reliable operation under repetitive line transients without derating. |
| Ultra-low VF at high TJ | 0.50 V typ @ 15 A, 125°C-maintains efficiency in thermally constrained enclosures without forced air. |
| Low high-temp IR | ≤100 mA @ 45 V, 125°C-prevents thermal runaway in sealed industrial power modules. |
| RoHS-compliant & Halogen-free | Meets EU Directive 2011/65/EU and <900 ppm Br/Cl, <1000 ppm Sb-supports green manufacturing and end-of-life compliance. |
Applications
| Server VRM Output Rectification | Industrial DC-DC Converter |
|---|---|
Use Scenario: High-current, high-efficiency 12 V → 1 V conversion in CPU/GPU voltage regulators. IC Role / Device Role / Timing Role: Dual-leg synchronous rectifier replacement-provides low-VF freewheeling path during low-side switch off-time. Use Value: Reduces conduction loss by 1.2 W per leg vs. standard FRD, lowering VRM thermal density and improving transient response. | Use Scenario: 48 V input to 24 V/15 A isolated DC-DC module for factory automation controls. IC Role / Device Role / Timing Role: Secondary-side output rectifier in center-tapped or full-wave configuration. Use Value: Enables 94.5% peak efficiency at full load due to 0.55 V VF, reducing heatsink size by 35%. |
| Telecom AC-DC Adapter | Renewable Energy Inverter Auxiliary Supply |
Use Scenario: Compact 100 W telecom adapter with universal AC input and 12 V/5 A output. IC Role / Device Role / Timing Role: Primary-side bridge rectifier replacement in PFC+LLC secondary stage. Use Value: Eliminates need for active cooling via 0.5 mA IR at 25°C and stable VF up to 125°C ambient. | Use Scenario: Auxiliary 24 V supply in solar string inverters operating at +85°C ambient. IC Role / Device Role / Timing Role: Freewheel diode across gate-drive transformer secondary winding. Use Value: Prevents thermal runaway failure during extended high-temperature operation due to <100 mA IR at 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT3045CT | Same die, ITO220AB package with insulated tab; RθJC = 4°C/W per leg; VAC = 2000 V isolation. | Required where primary-secondary isolation or floating heatsink mounting is needed. | Select when creepage/clearance requirements exceed TO220AB limits or when heatsink must remain ungrounded. |
| MBR3045CT | Standard Schottky; VF = 0.62 V max @ 15 A; IR = 20 mA @ 45 V/25°C; no avalanche rating. | Lower-cost option where surge immunity and high-temp leakage are non-critical. | Choose only for benign ambient (<60°C) and low-transient environments; avoid in industrial or telecom deployments. |
Compared with SBRT3045CT, SBR3045CT offers lower thermal resistance but requires grounded heatsink mounting; versus MBR3045CT, it provides superior reliability under surge and high-temperature stress at modest cost premium.
Availability
SBR3045CT is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and telecom AC-DC adapters requiring stable component supply, RoHS-compliant packaging, and proven high-temperature reliability.
Supply support for SBR3045CT 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 targets high-efficiency power conversion in computing, industrial, and telecom infrastructure, emphasizing ruggedness, low VF, and thermal stability over conventional Schottky or fast recovery diodes.
FAQ
What is the maximum continuous junction temperature for SBR3045CT?
The SBR3045CT has an operating junction temperature range of –65°C to +150°C. Its thermal resistance is specified per leg at RθJC = 2°C/W (TO220AB with 50×50×23 mm aluminum heatsink), allowing sustained 15 A operation at +125°C case temperature with appropriate heatsinking.
Is SBR3045CT pin-compatible with standard TO220 full-bridge rectifiers?
No. SBR3045CT is a dual common-cathode rectifier (A1–K–A2), not a full-bridge. Its pinout differs: Pin 1 = A1, Pin 2 = K (tab-connected), Pin 3 = A2. It replaces two discrete Schottkys-not four-diode bridges-and requires layout adaptation for dual-anode routing.
Does SBR3045CT require derating for capacitive loads?
Yes. Per datasheet Note: "For capacitive load, derate current by 20%." At full-rated 15 A per leg, this means limiting average forward current to 12 A when used with highly capacitive outputs, such as bulk capacitor inputs in offline SMPS, to prevent excessive surge stress on the die.
How does SBR3045CT's avalanche capability compare to Schottky diodes?
SBR3045CT uses patented SBR® technology to achieve significantly higher avalanche energy rating than standard Schottky diodes. This allows it to safely absorb repetitive line transients and switching spikes without degradation-critical in unregulated or poorly filtered input stages where Schottkys would fail prematurely.
SBR3045CT 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 15 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
SBR3045CT FAQ
1.How can I place an order for SBR3045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR3045CT 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 SBR3045CT reliable?
The price and inventory of SBR3045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR3045CT is usually 5 days.
3.What payment methods are accepted for SBR3045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR3045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR3045CT?
SBR3045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR3045CT 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 SBR3045CT?
For technical support, including SBR3045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR3045CT requirements.
6.How does Aetrix verify that SBR3045CT is sourced from the original manufacturer or authorized distributors?
All SBR3045CT 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 SBR3045CT meets industry standards.
7.What is the process for return or replacement of SBR3045CT?
All SBR3045CT units undergo pre-shipment inspection (PSI). If there is an issue with SBR3045CT, 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 SBR3045CT part is unused and in its original packaging.
Return procedure for SBR3045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR3045CT Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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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
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