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Diodes Incorporated SBRT3U45SA-13
- Part No.:
- SBRT3U45SA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SBRT3U45SA-13.pdf
- Description:
- DIODE SBR 45V 3A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:17,990
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Product details
Overview
SBRT3U45SA-13 from Diodes Incorporated is a 3A, 45V Trench Super Barrier Rectifier (SBR) in SMA package, featuring ultra-low 0.48V max forward voltage at 3A/25°C, 0.15mA max reverse leakage at 45V/25°C, and AEC-Q101 qualification for automotive reliability. It serves as a high-efficiency boost or recirculating diode in DC-DC converters and power supplies.
For engineers reviewing the SBRT3U45SA-13 datasheet, SBRT3U45SA-13 pinout, SBRT3U45SA-13 application, or SBRT3U45SA-13 equivalent, key selection criteria include forward voltage drop at elevated temperature, thermal resistance (RθJA = 66°C/W), reverse leakage stability up to +150°C, and RoHS/Green compliance with halogen/antimony-free construction.
Technical Context
This SBR rectifier uses trench-based super barrier technology to achieve lower VF than standard Schottky diodes while maintaining superior high-temperature IR stability-critical for automotive under-hood applications where junction temperatures exceed 125°C. Its 50A non-repetitive surge rating supports transient load conditions in switching regulators.
The device operates across –55°C to +150°C, with RθJC = 30°C/W enabling effective heat transfer to PCB copper pads. Its SMA package (2.92 × 4.60 × 1.63 mm) supports automated assembly and meets J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage before breakdown; defines safe blocking capability in 48V system rails. |
| IO | 3 A - Continuous average forward current; supports sustained conduction in 12–24V DC-DC output stages. |
| VF (max) | 0.48 V @ 3A, 25°C - Ultra-low forward drop reduces conduction loss by >30% vs. standard Schottky; improves efficiency in high-current paths. |
| IR (max) | 0.15 mA @ 45V, 25°C - Tight leakage spec ensures minimal standby power loss and stable operation in battery-powered systems. |
| RθJA | 66 °C/W - Thermal resistance to ambient on standard FR-4 board; enables ~2.3W max power dissipation at TA = 75°C. |
| TJ Range | –55°C to +150°C - Extended operating range validated per AEC-Q101; suitable for engine control units and ADAS power modules. |
| IFSM | 50 A - Peak surge current handling for 8.3ms half-sine; withstands inrush and fault transients without failure. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, single-diode configuration with cathode band marking. Dimensions: 2.92 mm (L) × 4.60 mm (W) × 1.63 mm (H); weight ≈ 0.064 g; matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side of rectification path; must handle full IO and IFSM currents. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to output/load; sustains full VRRM during off-state with <0.15mA leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF trench architecture | 0.48V max @ 3A/25°C - Reduces conduction loss by ≥0.45W vs. comparable Schottky, lowering thermal stress in compact layouts. |
| High-temp IR stability | ≤40 μA @ 45V/125°C - Prevents thermal runaway in automotive ambient environments exceeding 105°C. |
| AEC-Q101 qualification | Qualified for automotive-grade reliability - Enables use in engine management, body control, and infotainment power supplies without derating. |
| Halogen & antimony free | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - Meets strict environmental compliance for global OEM supply chains. |
| SMA package compatibility | J-STD-020 Level 1 MSL - Eliminates bake requirements prior to reflow, streamlining high-volume SMT manufacturing. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial DC-DC Converter |
|---|---|
Use Scenario: Boost diode in 12V-to-48V bidirectional converter for mild hybrid systems. IC Role / Device Role / Timing Role: Power rectifier providing unidirectional current flow during boost phase; blocks reverse current during buck phase. Use Value: 0.48V VF minimizes power loss at 3A continuous, reducing heatsink size; AEC-Q101 ensures 15-year field reliability under thermal cycling. | Use Scenario: Recirculating diode across relay coil or solenoid in programmable logic controller (PLC) output stage. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback energy; clamps voltage spike to ≤45V. Use Value: 50A IFSM safely absorbs 100ms coil de-energization surges; low IR prevents false triggering in high-temperature enclosures. |
| USB-C PD Power Adapter | Telecom Base Station PSU |
Use Scenario: Output rectifier in synchronous flyback secondary-side circuit delivering 20V/3A to USB-C port. IC Role / Device Role / Timing Role: High-frequency rectifier operating at 100–300 kHz; conducts during transformer reset phase. Use Value: Low VF maintains >94% efficiency at full load; SMA footprint allows dense layout near transformer with minimal parasitic inductance. | Use Scenario: Blocking diode in redundant 48V DC distribution bus feeding RF power amplifiers. IC Role / Device Role / Timing Role: OR-ing diode preventing backfeed between parallel PSUs; maintains isolation during fault conditions. Use Value: 0.15mA IR at 25°C and <40μA at 125°C ensures negligible standby current drain across 100+ units in rack-mounted systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT3U45-13 | Same die, but standard (non-Green) finish; contains bromine/chlorine above "Green" threshold. | Acceptable for industrial/non-automotive use where halogen-free compliance is not required. | Select when cost sensitivity outweighs environmental certification needs. |
| SS34H | Standard Schottky; VF = 0.55V max @ 3A/25°C; IR = 0.5mA @ 45V/25°C; no AEC-Q101 qualification. | Limited to commercial-temperature applications; higher conduction loss and leakage reduce system efficiency and long-term reliability. | Use only in cost-driven consumer designs with ambient <85°C and no automotive qualification mandate. |
Compared with SBRT3U45SA-13, SBRT3U45-13 offers identical electrical performance but lacks halogen/antimony-free compliance, while SS34H trades efficiency and thermal robustness for lower unit cost-making SBRT3U45SA-13 the optimal choice for AEC-Q101–mandated, thermally demanding, and environmentally regulated applications.
Availability
SBRT3U45SA-13 is available at Aetrix Electronics and suitable for automotive ECU power supplies, industrial PLC output stages, USB-C PD adapters, and telecom base station PSUs requiring stable component supply, long-lifecycle support, and consistent AEC-Q101–compliant material traceability.
Supply support for SBRT3U45SA-13 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 TrenchSBR product line delivers high-efficiency, high-reliability rectifiers optimized for automotive, industrial, and computing power conversion-specifically engineered to replace Schottky diodes where low VF and high-temperature IR stability are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The SBRT3U45SA-13 has a rated operating junction temperature range of –55°C to +150°C. For continuous operation at full 3A IO, thermal design must ensure TJ does not exceed +150°C-achievable with RθJA = 66°C/W and ambient ≤75°C on a standard FR-4 board with recommended pad layout.
Is SBRT3U45SA-13 pin-compatible with standard SMA Schottky diodes?
Yes-SBRT3U45SA-13 uses the industry-standard SMA (DO-214AC) package with identical mechanical dimensions and cathode-band polarity marking. It replaces parts like SS34 or SB340 in existing layouts without footprint modification, provided thermal and electrical margins are verified.
Does this part require special handling for moisture sensitivity?
No-SBRT3U45SA-13 is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and placed directly into reflow without baking or dry-pack requirements, simplifying SMT line integration.
How does its reverse leakage compare to conventional Schottky diodes at 125°C?
At VR = 45V and TJ = 125°C, SBRT3U45SA-13 exhibits ≤40 μA IR-up to 12× lower than typical Schottky diodes (e.g., SS34H: ~500 μA). This suppression of thermal runaway risk enables reliable operation in sealed, high-ambient-temperature enclosures.
SBRT3U45SA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- TrenchSBR
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 480 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 150 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
SBRT3U45SA-13 FAQ
1.How can I place an order for SBRT3U45SA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT3U45SA-13 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 SBRT3U45SA-13 reliable?
The price and inventory of SBRT3U45SA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT3U45SA-13 is usually 5 days.
3.What payment methods are accepted for SBRT3U45SA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT3U45SA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT3U45SA-13?
SBRT3U45SA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT3U45SA-13 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 SBRT3U45SA-13?
For technical support, including SBRT3U45SA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT3U45SA-13 requirements.
6.How does Aetrix verify that SBRT3U45SA-13 is sourced from the original manufacturer or authorized distributors?
All SBRT3U45SA-13 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 SBRT3U45SA-13 meets industry standards.
7.What is the process for return or replacement of SBRT3U45SA-13?
All SBRT3U45SA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBRT3U45SA-13, 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 SBRT3U45SA-13 part is unused and in its original packaging.
Return procedure for SBRT3U45SA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBRT3U45SA-13 Tags
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