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Diodes Incorporated SBR1045D1Q-13
- Part No.:
- SBR1045D1Q-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SBR1045D1Q-13.pdf
- Description:
- DIODE SBR 45V 10A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,028
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Product details
Overview
SBR1045D1Q-13 from Diodes Incorporated is an automotive-grade 45V, 10A Super Barrier Rectifier in TO252 (DPAK) package, featuring low forward voltage (0.42V @ 5A, 25°C), soft fast switching, and AEC-Q101 qualification for high-reliability power conversion in engine control units and DC-DC converters.
For engineers reviewing the SBR1045D1Q-13 datasheet, SBR1045D1Q-13 pinout, SBR1045D1Q-13 application, or SBR1045D1Q-13 equivalent, key selection criteria include peak repetitive reverse voltage (45V), thermal resistance junction-to-case (3°C/W), leakage current at 125°C (40mA), and TO252 footprint compatibility with high-current PCB layouts.
Technical Context
This SBR rectifier replaces conventional Schottky diodes in 12V/24V automotive power rails where higher temperature stability and lower leakage are required. Its patented super barrier structure delivers VF as low as 0.37V at 5A and 125°C while maintaining <500μA IR at 45V and 125°C - critical for under-hood ambient operation up to +150°C.
The device operates with soft recovery characteristics (no hard reverse recovery spikes), minimizing EMI in synchronous buck converters and alternator rectification circuits. Its 90A non-repetitive surge rating supports load dump transients per ISO 7637-2, and its 3°C/W RθJC enables direct heatsinking via the exposed DPAK drain tab.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 24V battery systems with load dump margins. |
| IO @ TC=140°C | 10 A - Continuous average forward current at case temperature; enables compact heatsink design in space-constrained ECUs. |
| VF @ 5A, 25°C | 0.42 V - Low conduction loss reduces power dissipation by ~30% vs. standard Schottky diodes at same current. |
| RθJC | 3 °C/W - Low thermal resistance from junction to case allows efficient heat transfer to PCB copper or external heatsink. |
| IFSM (8.3ms) | 90 A - Peak surge capability handles ISO 16750-2 load dump pulses without failure. |
| TJ Range | –65°C to +150°C - Full automotive temperature range support for under-hood and transmission control modules. |
| IR @ 45V, 125°C | 40 mA - Controlled leakage ensures stable biasing in high-temp sensor supply rails and prevents thermal runaway. |
Pinout & Package
Package: TO252 (DPAK), surface-mount, with exposed drain tab (pin 2) for thermal and electrical connection. Molded plastic case, UL 94V-0 rated, 0.33g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input current terminal | Connects to unregulated input rail (e.g., alternator output or boost converter switch node). |
| Cathode / Drain Tab (Pin 2) | Output & thermal path | Electrically tied to cathode; soldered directly to large copper pour for low-inductance, high-current return and thermal dissipation. |
| No Connection (Pin 3) | Isolated leadframe extension | Mechanical support only; not electrically connected - must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Soft, fast switching | Minimizes reverse recovery ringing and EMI in high-frequency DC-DC converters (e.g., 300–500 kHz buck stages). |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and ESD testing - suitable for ASIL-B systems without additional qualification. |
| Low VF at high temperature | 0.37V @ 5A, 125°C ensures stable efficiency in hot environments where standard Schottkys degrade significantly. |
| Lead-free & RoHS compliant | Matte tin finish on copper leadframe meets J-STD-020 solderability requirements and EU Directive 2002/95/EC exemptions. |
| Green molding compound | Halogen-free (no Br, Sb) formulation supports environmental compliance in Tier 1 automotive supply chains. |
Applications
| Engine Control Unit Power Supply | Automotive DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Rectifying switched 12V/24V input in ECU main power stage subjected to wide ambient (-40°C to +150°C) and load dump transients. IC Role / Device Role / Timing Role: Primary output rectifier in non-synchronous buck converter supplying microcontroller core voltage. Use Value: 0.42V VF at 25°C and 40mA IR at 125°C ensure minimal dropout and stable regulation across full temperature range. | Use Scenario: Secondary-side rectification in isolated flyback or forward converter powering infotainment system rails. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode handling continuous 8A output current with minimal conduction loss. Use Value: 3°C/W RθJC enables direct thermal coupling to 2oz copper, reducing junction temperature rise by >25°C vs. SO-8 alternatives. |
| Alternator Rectifier Module | Body Control Module (BCM) Input Protection |
Use Scenario: Replacing legacy silicon diodes in 3-phase alternator bridge to improve charge efficiency and reduce thermal stress. IC Role / Device Role / Timing Role: High-current AC-to-DC rectifier leg with 90A IFSM rating for transient overload handling during cold cranking. Use Value: Soft recovery eliminates voltage spikes that cause EMI failures in adjacent CAN/LIN communication circuits. | Use Scenario: Reverse polarity and overvoltage protection at BCM 12V input, operating continuously at +105°C ambient. IC Role / Device Role / Timing Role: Series-blocking diode preventing backfeed and protecting downstream LDOs and MCU inputs. Use Value: 45V VRRM and –65°C to +150°C TJ range ensure robust operation during jump-start events and under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, high-temperature rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT1045-13 | Same die, commercial grade (non-AEC-Q101); identical electrical specs but no automotive qualification testing. | Limited to industrial or consumer power supplies where AEC-Q101 is not mandated. | Select only if automotive reliability certification is unnecessary and cost sensitivity outweighs long-term field risk. |
| MBR1045CT | Standard Schottky; higher VF (0.55V typ @ 5A, 25°C), 10× higher IR at 125°C (~400μA), no AEC-Q101 qualification. | Acceptable for non-critical 12V accessories but unsuitable for ECU or safety-related modules. | Use only in cost-driven, low-temperature applications where leakage and thermal stability are secondary concerns. |
Compared with SBRT1045-13, SBR1045D1Q-13 adds AEC-Q101 validation for mission-critical automotive use; versus MBR1045CT, it delivers 30% lower conduction loss and 10× lower high-temp leakage - enabling smaller heatsinks and longer field life in harsh environments.
Availability
SBR1045D1Q-13 is available at Aetrix Electronics and suitable for engine control units, automotive DC-DC converters, alternator rectifier modules, and body control module input protection requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for SBR1045D1Q-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 the Americas.
The SBR® Super Barrier Rectifier product line was developed specifically for automotive and industrial power conversion applications demanding lower forward voltage, superior high-temperature leakage performance, and robust surge capability beyond standard Schottky limitations.
FAQ
What is the difference between SBR1045D1Q-13 and SBR1045D1-13?
The "Q" suffix denotes AEC-Q101 qualification for automotive applications, including extended temperature cycling, highly accelerated life testing, and failure analysis per JEDEC standards. The non-Q version is commercial-grade with identical electrical specs but no automotive reliability validation or traceability documentation.
Can SBR1045D1Q-13 replace a standard Schottky diode in an existing design?
Yes - it is a direct footprint replacement in TO252 packages. However, verify thermal layout: its lower VF reduces power loss, but the exposed drain tab must be connected to a ≥240 mm² copper area for optimal RθJC performance. Also confirm reverse voltage margin, as its 45V rating matches common 24V system peaks.
Does SBR1045D1Q-13 require a heatsink in typical automotive applications?
Not necessarily - with RθJC = 3°C/W and proper PCB copper area (≥240 mm², 2 oz), it achieves sufficient cooling for 10A continuous operation at TC = 140°C. Heatsinking is recommended only when ambient exceeds 105°C or airflow is restricted, such as in sealed ECU enclosures.
Is the SBR1045D1Q-13 suitable for synchronous rectification topologies?
No - it is a unidirectional rectifier optimized for non-synchronous configurations. It lacks gate control or bidirectional conduction capability. For synchronous rectification, discrete MOSFETs or dedicated SR controllers (e.g., APW7159) must be used instead.
SBR1045D1Q-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 580 mV @ 10 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Capacitance @ Vr, F:
- 400pF @ 5V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR1045D1Q-13 FAQ
1.How can I place an order for SBR1045D1Q-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1045D1Q-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 SBR1045D1Q-13 reliable?
The price and inventory of SBR1045D1Q-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1045D1Q-13 is usually 5 days.
3.What payment methods are accepted for SBR1045D1Q-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1045D1Q-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1045D1Q-13?
SBR1045D1Q-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1045D1Q-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 SBR1045D1Q-13?
For technical support, including SBR1045D1Q-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1045D1Q-13 requirements.
6.How does Aetrix verify that SBR1045D1Q-13 is sourced from the original manufacturer or authorized distributors?
All SBR1045D1Q-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 SBR1045D1Q-13 meets industry standards.
7.What is the process for return or replacement of SBR1045D1Q-13?
All SBR1045D1Q-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR1045D1Q-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 SBR1045D1Q-13 part is unused and in its original packaging.
Return procedure for SBR1045D1Q-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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