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Diodes Incorporated SBR3045SCTB
- Part No.:
- SBR3045SCTB
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBR3045SCTB.pdf
- Description:
- DIODE ARRAY SBR 45V 15A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:151
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Product details
Overview
SBR3045SCTB from Diodes Incorporated is a 45 V, 30 A total (15 A per leg) Super Barrier Rectifier in TO263AB (D2PAK) package, featuring 0.65 V max forward voltage at 15 A and 0.2 mA max reverse leakage at 45 V/25°C. It serves as a high-efficiency freewheel or blocking diode in DC-DC converters and AC-DC adapters, with patented SBR® technology enabling soft, fast switching and +200°C maximum junction temperature rating.
For engineers reviewing the SBR3045SCTB datasheet, SBR3045SCTB pinout, SBR3045SCTB application, or SBR3045SCTB equivalent, key selection criteria include its dual-leg 15 A per leg current rating, 2 °C/W typical RθJC, +175°C continuous operating junction temperature, and suitability for solar bypass and high-thermal-reliability industrial power supplies.
Technical Context
This dual-die SBR rectifier integrates two independent 15 A legs in a single TO263AB package, sharing a common cathode configuration confirmed by top-view marking and mechanical outline. Its patented Super Barrier Rectifier structure replaces traditional PN junctions with low-barrier Schottky-like metallization and optimized epitaxial layers to achieve lower VF than standard Schottkys while maintaining superior IR performance.
The device operates up to +175°C continuously and +200°C selectively rated, enabled by robust thermal design (RθJC = 2 °C/W) and green molding compound rated UL 94V-0. Soft recovery minimizes EMI in high-frequency switching topologies such as synchronous buck converters and isolated flyback secondary-side rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage per leg; defines safe blocking capability in 36 V nominal bus systems. |
| IO (per leg) | 15 A - Continuous average forward current per internal die; supports parallel-leg thermal management in high-power designs. |
| IO (total) | 30 A - Combined output capacity across both legs; enables compact dual-path rectification without external paralleling. |
| VF (max) | 0.65 V @ 15 A, 25°C - Low conduction loss improves efficiency in 12–24 V output stages; drops to 0.58 V at 125°C. |
| IR (max) | 0.2 mA @ 45 V, 25°C - Ultra-low leakage preserves standby power in energy-sensitive adapters and solar bypass circuits. |
| RθJC | 2 °C/W - Enables direct heatsink mounting for high-power dissipation; supports >20 W continuous power handling with minimal thermal rise. |
| TJ (max) | +175°C continuous / +200°C selectively rated - Allows operation in under-hood automotive or enclosed industrial enclosures without derating. |
Pinout & Package
Package: TO263AB (D2PAK), surface-mount, 3-terminal configuration with exposed copper drain pad for thermal and electrical connection. Molded green compound, UL 94V-0 rated, matte tin terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first rectifying leg | Accepts positive input from primary-side switch node; electrically isolated from A2 but thermally coupled via shared case. |
| Anode 2 (A2) | Input terminal for second rectifying leg | Enables dual-input configurations (e.g., interleaved outputs or redundant paths); shares cathode and thermal path with A1. |
| Cathode (K) | Common output terminal | Single low-inductance output node for both legs; connects directly to PCB copper pour for optimal thermal transfer and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® technology | Combines Schottky-like VF with PN-junction-level IR; eliminates trade-off between conduction loss and leakage in high-temp operation. |
| +200°C maximum junction rating | Validated for selective use in extreme thermal environments (e.g., solar panel junction boxes), extending lifetime beyond standard 175°C parts. |
| Soft, fast switching | Controlled reverse recovery minimizes voltage overshoot and ringing in 100–500 kHz DC-DC converters, reducing snubber requirements. |
| Lead-free, halogen/antimony-free | Meets RoHS 3 (2015/863/EU) and automotive "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb); suitable for eco-conscious OEM production. |
Applications
| Solar Panel Bypass Protection | High-Efficiency DC-DC Converter Output |
|---|---|
Use Scenario: Installed across individual PV cell strings in rooftop or utility-scale arrays to prevent hot-spot damage during partial shading. IC Role / Device Role / Timing Role: Bypass diode conducting reverse current around shaded substrings while blocking forward current from adjacent strings. Use Value: Leverages 0.2 mA max IR at 25°C and +200°C selective rating to maintain reliability over decades of outdoor exposure and thermal cycling. | Use Scenario: Secondary-side rectifier in 12 V/20 A telecom or server POL converter operating at 300 kHz. IC Role / Device Role / Timing Role: Synchronous rectifier replacement providing unidirectional conduction with soft recovery to reduce EMI. Use Value: 0.65 V VF at 15 A lowers conduction loss by ~15% vs. standard Schottky alternatives, improving full-load efficiency by 0.8–1.2%. |
| AC-DC Adapter Secondary Rectification | Industrial Motor Drive Freewheeling |
Use Scenario: Output rectifier in 24 V/10 A wall-mount adapter powering factory automation controllers. IC Role / Device Role / Timing Role: Main DC output rectifier converting transformer secondary AC to regulated DC, handling peak surge currents up to 220 A. Use Value: 220 A IFSM rating withstands inrush into bulk capacitors; TO263AB package enables automated reflow assembly and robust thermal interface to heatsink. | Use Scenario: Freewheel diode across 24 V DC solenoid valves or brushed motor windings in packaging machinery. IC Role / Device Role / Timing Role: Clamp inductive kickback energy during PWM turn-off, preventing MOSFET avalanche failure. Use Value: Soft recovery limits dV/dt-induced gate coupling; +175°C continuous rating ensures stable operation in sealed control cabinets near heat sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT3045CTB | Same 45 V/30 A rating but uses trench-Schottky architecture; VF = 0.59 V @ 15 A, IR = 0.35 mA @ 45 V/25°C. | Higher leakage reduces suitability for solar bypass; better for low-VF priority in DC-DC where thermal margin exists. | Select when lowest possible VF dominates over long-term leakage stability at elevated temperature. |
| MBR3045CT | Standard dual Schottky; VF = 0.72 V @ 15 A, IR = 1.5 mA @ 45 V/25°C, TJ(max) = +150°C. | Lower thermal rating and higher leakage limit use in solar or high-ambient industrial settings. | Choose only for cost-sensitive, non-solar, ≤+85°C ambient applications where efficiency is secondary to BOM cost. |
Compared with SBRT3045CTB and MBR3045CT, the SBR3045SCTB uniquely balances ultra-low leakage (0.2 mA), high-temperature capability (+200°C selective), and competitive VF (0.65 V), making it the preferred choice for mission-critical solar and industrial power where reliability outweighs marginal VF reduction.
Availability
SBR3045SCTB is available at Aetrix Electronics and suitable for solar bypass protection, high-efficiency DC-DC converters, and industrial motor drive freewheeling requiring stable component supply and long-lifecycle assurance.
Supply support for SBR3045SCTB 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® product line delivers high-performance, thermally robust rectifiers using proprietary barrier technology-designed specifically for solar energy systems, industrial power supplies, and automotive auxiliary power modules demanding reliability under sustained thermal stress.
FAQ
What is the pin configuration and polarity marking for SBR3045SCTB?
The SBR3045SCTB uses a 3-terminal TO263AB package with Anode 1, Anode 2, and Common Cathode. Polarity is marked on the top surface: cathode side features a molded bar and "K" symbol; anode terminals are unmarked. Pin 1 (A1) is leftmost when viewing top-side markings with tab facing down.
Does SBR3045SCTB support AEC-Q101 qualification for automotive use?
No-SBR3045SCTB is not AEC-Q101 qualified. While it meets +175°C continuous and +200°C selective junction temperature ratings, Diodes specifies that automotive-grade versions require explicit PPAP documentation and IATF 16949 manufacturing; this part is intended for industrial, solar, and commercial power applications.
How does the dual-leg structure affect thermal design and PCB layout?
The dual-leg structure shares a common cathode and thermal slug, so both anodes must be routed to separate high-current traces while connecting to a single large copper pour tied to the exposed D2PAK drain pad. Thermal vias under the pad (≥8×0.3 mm) are required to achieve the specified 2 °C/W RθJC; splitting anode traces prevents current crowding and localized heating.
Can SBR3045SCTB replace standard Schottky rectifiers in existing designs?
Yes-with verification of layout compatibility and thermal margin. Its 0.65 V VF is lower than most 45 V Schottkys (e.g., MBR3045CT at 0.72 V), and its soft recovery reduces EMI. However, ensure the PCB pad layout matches TO263AB dimensions and that the cathode net can handle combined 30 A current without excessive voltage drop or heating.
SBR3045SCTB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 650 mV @ 15 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBR3045SCTB FAQ
1.How can I place an order for SBR3045SCTB through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR3045SCTB 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 SBR3045SCTB reliable?
The price and inventory of SBR3045SCTB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR3045SCTB is usually 5 days.
3.What payment methods are accepted for SBR3045SCTB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR3045SCTB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR3045SCTB?
SBR3045SCTB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR3045SCTB 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 SBR3045SCTB?
For technical support, including SBR3045SCTB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR3045SCTB requirements.
6.How does Aetrix verify that SBR3045SCTB is sourced from the original manufacturer or authorized distributors?
All SBR3045SCTB 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 SBR3045SCTB meets industry standards.
7.What is the process for return or replacement of SBR3045SCTB?
All SBR3045SCTB units undergo pre-shipment inspection (PSI). If there is an issue with SBR3045SCTB, 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 SBR3045SCTB part is unused and in its original packaging.
Return procedure for SBR3045SCTB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR3045SCTB Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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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
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BAV99WT1G
onsemi
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