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onsemi SBRB1545CTG
- Part No.:
- SBRB1545CTG
- Manufacturer:
- onsemi
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBRB1545CTG.pdf
- Description:
- DIODE ARRAY SCHOT 45V 7.5A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,535
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Product details
Overview
SBRB1545CTG from onsemi is a 15 A, 45 V center-tap Schottky barrier rectifier in D2PAK (TO-263) surface-mount package, featuring low forward voltage (0.57 V @ 7.5 A, 125°C), 175°C junction rating, and AEC-Q101 qualification for automotive power conversion. It delivers high-efficiency rectification in DC/DC converters and switch-mode power supplies.
For engineers reviewing the SBRB1545CTG datasheet, pinout, applications, or equivalent options, key selection criteria include per-leg forward voltage drop, thermal resistance (RJC = 2.0°C/W), center-tap configuration compatibility, and Pb-free RoHS-compliant packaging for automotive-grade reliability.
Technical Context
The SBRB1545CTG integrates two Schottky diodes in a single center-tap configuration, enabling full-wave rectification without external wiring. Its platinum-barrier metal construction ensures stable low-VF performance across temperature and load.
Designed for high-frequency switching applications, it supports 10,000 V/s dv/dt capability and withstands non-repetitive surge currents up to 150 A. The device operates at junction temperatures from −65°C to +175°C with MSL1 moisture sensitivity and 260°C soldering tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V peak repetitive reverse voltage - defines maximum AC input or DC bus blocking capability per leg |
| IF(AV) | 7.5 A average forward current per leg at TC = 167°C - sets continuous conduction limit under heatsink-cooled conditions |
| VF @ 7.5 A, 125°C | 0.57 V - enables <1.2 W conduction loss per leg at typical operating point, reducing thermal stress |
| RJC | 2.0 °C/W - allows direct thermal path to heatsink via exposed tab, critical for high-power density designs |
| TJ max | +175°C - supports operation in under-hood automotive environments and sealed industrial enclosures |
| IFSM | 150 A non-repetitive surge - handles inrush and fault transients in SMPS and battery charging circuits |
| ESD Rating (HBM) | >8000 V - ensures robustness during PCB handling and assembly without additional protection |
Pinout & Package
D2PAK (TO-263) surface-mount package with exposed metal tab for thermal dissipation; case outline per ON Semiconductor CASE 418B-04, Style 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Leg 1) | Input terminal for first diode anode; connects to transformer secondary or switching node |
| 2 | Cathode (Common) | Shared cathode output node - serves as full-wave rectified DC output reference point |
| 3 | Anode (Leg 2) | Input terminal for second diode anode; complements Leg 1 for center-tap transformer winding |
| 4 | Cathode (Common) | Redundant cathode connection - electrically tied to Pin 2; enhances current sharing and thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Center-tap configuration | Enables full-wave rectification with single-package integration, eliminating discrete diode pairing and layout asymmetry |
| Guardring for stress protection | Improves ruggedness against voltage transients and localized field crowding at edge terminations |
| Low forward voltage (0.57 V) | Reduces conduction losses by ~30% vs. standard silicon rectifiers at 7.5 A, directly improving system efficiency |
| AEC-Q101 qualified | Validated for automotive power modules including engine control units and ADAS power supplies |
| Pb-free, RoHS-compliant | Meets global environmental compliance requirements without compromising thermal or electrical performance |
Applications
| Automotive DC/DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: High-efficiency 12 V to 5 V/3.3 V conversion in engine control units and infotainment systems. IC Role / Device Role / Timing Role: Center-tap Schottky rectifier providing synchronous full-wave output with minimal voltage drop. Use Value: Enables >92% conversion efficiency at 5 A load while maintaining TJ < 150°C under natural convection cooling. |
Use Scenario: Output rectification in 48 V telecom and server PSUs operating at 100–500 kHz switching frequency. IC Role / Device Role / Timing Role: Low-loss power rectifier replacing dual discrete Schottkys to reduce BOM count and footprint. Use Value: Reduces total conduction loss by 1.8 W vs. legacy TO-220 solutions, allowing smaller heatsinks and higher power density. |
| LED Driver Power Stages | Renewable Energy Inverters |
Use Scenario: Secondary-side rectification in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: High-reliability rectifier handling pulsed loads and ambient temperatures up to 85°C. Use Value: Guarantees 175°C TJ margin even during sustained overcurrent events, extending driver lifetime. |
Use Scenario: Auxiliary power supply rectification in solar microinverters and battery storage converters. IC Role / Device Role / Timing Role: Center-tap diode pair delivering isolated DC bias for gate drivers and sensing circuits. Use Value: Supports 10,000 V/s dv/dt immunity required for fast-switching SiC-based inverters without snubber networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MBRB1545CTG | Identical electrical specs and D2PAK package; differs only in manufacturing site/control traceability (non-AEC-Q101 rated) | Approved for industrial/commercial use but not automotive PPAP or AEC-Q101 stress testing | Select when AEC-Q101 qualification is not required and cost optimization is prioritized |
| STPS1545CG | 15 A / 45 V Schottky in D2PAK; VF = 0.62 V @ 7.5 A, 125°C; RJC = 2.5°C/W; no AEC-Q101 certification | Compatible in non-automotive SMPS but requires thermal derating due to higher RJC | Choose when sourcing flexibility is needed and automotive qualification is unnecessary |
Compared with MBRB1545CTG and STPS1545CG, the SBRB1545CTG uniquely combines AEC-Q101 qualification, lowest VF, and tightest thermal resistance-making it the sole option for thermally constrained automotive power modules requiring zero-derating at 125°C ambient.
Availability
SBRB1545CTG is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial switch-mode power supplies, and renewable energy inverters requiring stable component supply and long-term lifecycle support.
Supply support for SBRB1545CTG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The SBRB1545CTG belongs to onsemi's high-current Schottky rectifier product line, engineered specifically for AEC-Q101-compliant automotive power conversion where low forward voltage and high thermal reliability are mandatory.
FAQ
What is the pin configuration of the SBRB1545CTG?
The SBRB1545CTG uses D2PAK Style 3 pinout: Pin 1 = Anode (Leg 1), Pin 2 = Cathode (common), Pin 3 = Anode (Leg 2), Pin 4 = Cathode (common). Pins 2 and 4 are internally bonded and serve as redundant cathode terminals to improve current sharing and thermal conduction in the SBRB1545CTG.
Is the SBRB1545CTG suitable for automotive applications?
Yes, the SBRB1545CTG is AEC-Q101 qualified and PPAP capable, with guaranteed operation from −65°C to +175°C junction temperature. Its guardring design, 150 A surge rating, and Pb-free RoHS compliance make it approved for engine control, ADAS, and body electronics power stages using the SBRB1545CTG.
How does the SBRB1545CTG compare to standard silicon rectifiers in efficiency?
The SBRB1545CTG achieves 0.57 V forward voltage at 7.5 A and 125°C-approximately 40% lower than equivalent silicon rectifiers. This reduces conduction losses by up to 2.1 W per leg in a 12 V output converter, directly improving system efficiency and easing thermal management for the SBRB1545CTG.
What is the thermal resistance of the SBRB1545CTG and how does it affect layout?
The SBRB1545CTG has RJC = 2.0°C/W, measured from junction to case. To realize this value, the PCB must use minimum recommended copper pad area on FR-4, and the exposed tab must be soldered directly to a thermal plane. Proper layout ensures the SBRB1545CTG maintains safe junction temperature under full 7.5 A per-leg load.
Is the SBRB1545CTG still in active production?
No-the SBRB1545CTG is marked as discontinued in the official onsemi datasheet (Rev. 14, November 2024), though Aetrix Electronics maintains legacy inventory and supports existing designs. Customers designing new systems should consider qualified alternatives such as the MBRB1545CTG or consult onsemi for updated replacements compatible with the SBRB1545CTG footprint.
SBRB1545CTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SWITCHMODE™
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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):
- 7.5A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
SBRB1545CTG FAQ
1.How can I place an order for SBRB1545CTG through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRB1545CTG 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 SBRB1545CTG reliable?
The price and inventory of SBRB1545CTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRB1545CTG is usually 5 days.
3.What payment methods are accepted for SBRB1545CTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRB1545CTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRB1545CTG?
SBRB1545CTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRB1545CTG 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 SBRB1545CTG?
For technical support, including SBRB1545CTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRB1545CTG requirements.
6.How does Aetrix verify that SBRB1545CTG is sourced from the original manufacturer or authorized distributors?
All SBRB1545CTG 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 SBRB1545CTG meets industry standards.
7.What is the process for return or replacement of SBRB1545CTG?
All SBRB1545CTG units undergo pre-shipment inspection (PSI). If there is an issue with SBRB1545CTG, 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 SBRB1545CTG part is unused and in its original packaging.
Return procedure for SBRB1545CTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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