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Diodes Incorporated SBR10U45D1-T
- Part No.:
- SBR10U45D1-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SBR10U45D1-T.pdf
- Description:
- DIODE SBR 45V 10A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,834
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Product details
Overview
SBR10U45D1-T from Diodes Incorporated is a 10A, 45V ultra-low VF super barrier rectifier in TO252 (DPAK) package, designed for high-efficiency DC-DC converters and switching power supplies. It delivers 0.57V max forward voltage at 10A/25°C, 0.5mA max reverse leakage at 45V/25°C, and 125A non-repetitive surge capability - enabling reduced conduction loss and thermal stress in compact, high-frequency power stages.
For engineers reviewing the SBR10U45D1-T datasheet, SBR10U45D1-T pinout, SBR10U45D1-T application, or SBR10U45D1-T equivalent, key selection criteria include its soft-switching behavior, high-temperature stability up to +150°C junction, RoHS-compliant matte tin terminals, and validated performance in freewheeling and OR-ing configurations where low VF and fast recovery are critical.
Technical Context
This super barrier rectifier employs a patented epitaxial structure that replaces conventional PN junctions with a low-barrier Schottky-like interface, achieving lower forward voltage than standard Schottkys while maintaining superior reverse leakage control. Its soft, fast switching minimizes EMI generation during turn-off transitions in synchronous rectification topologies.
Thermal design is enabled by a 6.0°C/W junction-to-case resistance when mounted on a 2-inch² aluminum board per AP02001 layout, supporting sustained 10A operation at TC = +110°C. The device exhibits stable VF drift (0.54V typ at 125°C) and IR increase <10× across –55°C to +150°C, ensuring predictable behavior in automotive under-hood and industrial ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 36V nominal bus applications. |
| IO @ TC=110°C | 10 A - Continuous average forward current rating at case temperature; enables compact heatsinking in high-density SMPS designs. |
| VF (max) | 0.57 V @ 10A, 25°C - Ultra-low conduction loss reduces I²R heating and improves system efficiency above 90% in 12V–48V outputs. |
| IR (max) | 0.5 mA @ 45V, 25°C - Low leakage preserves standby power integrity in energy-sensitive systems like PoE injectors. |
| IFSM | 125 A @ 8.3ms - Robust surge handling supports inrush current in hot-swap and redundant power modules. |
| RθJC | 6.0 °C/W - Enables direct thermal coupling to PCB copper or heatsink; simplifies thermal modeling for reliability validation. |
| TJ Range | –65°C to +150°C - Supports extended industrial and automotive temperature deployment without derating penalties below +125°C. |
Pinout & Package
Package: TO252 (DPAK), surface-mount, 3-terminal plastic molded case with matte tin-plated copper leadframe; UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to input/high-side rail; requires adequate copper pour for thermal dissipation and current handling. |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Primary output node; ties to ground return or synchronous FET source in buck/flyback secondary side. |
| Tab / Pin 3 | Thermal pad / Cathode connection | Electrically and thermally tied to cathode; must be soldered to ≥250 mm² copper area for RθJC compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 0.57V max at 10A/25°C - directly lowers conduction loss by ~30% vs. standard FRDs in 48V→12V converters. |
| Soft, fast switching | No hard reverse recovery snap-off - reduces EMI filter component count and layout sensitivity in high-frequency (>300kHz) designs. |
| High-temperature stability | VF = 0.54V typ at 125°C; IR remains ≤5µA at 125°C - ensures consistent regulation and efficiency over full operating range. |
| Green construction | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); RoHS 2 compliant - meets IPC-1752A reporting and EU EcoDesign requirements. |
Applications
| Server VRMs | Industrial DC-DC Modules |
|---|---|
Use Scenario: Point-of-load conversion in 1U server motherboards with 48V intermediate bus and dual-phase 0.8V/100A CPU rails. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter secondary stage, replacing MOSFET body diode to reduce dead-time losses. Use Value: 0.57V VF cuts conduction loss by 1.2W per phase vs. Si FRD, lowering local hotspot temperature by ~12°C at full load. | Use Scenario: Isolated 24V→5V/3A auxiliary supply in PLC backplane power distribution. IC Role / Device Role / Timing Role: Output rectifier in flyback transformer secondary, operating at 250kHz with discontinuous conduction mode. Use Value: Soft recovery eliminates need for snubber RC network, reducing BOM count and improving no-load efficiency by 0.8%. |
| Telecom PoE Injectors | Automotive ADAS Power Rails |
Use Scenario: 4-pair PoE++ (IEEE 802.3bt Type 4) injector delivering up to 71W with active current limiting and thermal foldback. IC Role / Device Role / Timing Role: OR-ing diode in redundant 54V input stage, enabling seamless switchover between primary and backup DC sources. Use Value: Low VF minimizes voltage drop across OR-ing path, preserving >52V minimum at PD input under 1.2A load per pair. | Use Scenario: 12V→3.3V/2A pre-regulator for radar sensor SoC in engine compartment (-40°C to +125°C ambient). IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated buck-boost converter powering imaging processor and RF transceiver. Use Value: Stable IR <0.1mA at 125°C prevents standby current drift, maintaining <15µA system sleep current specification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT10U45D1-13 | Same die, identical electrical specs; differs only in tape-and-reel packaging (2500/reel vs. 1000/reel) and date-code marking format. | No functional difference; suitable for identical PCB layouts and thermal designs. | Select based on volume procurement preference and line-side reel changeover requirements. |
| MBR1045CT | Standard Schottky; higher VF (0.75V min), higher IR (1.0mA max), no soft-switching behavior. | Acceptable in low-frequency (<100kHz), low-ambient applications but increases EMI and thermal load in high-density designs. | Only consider if cost sensitivity outweighs efficiency and thermal targets; verify ripple and thermal margin in final layout. |
Compared with SBRT10U45D1-13, SBR10U45D1-T offers identical performance with different packaging logistics; versus MBR1045CT, it delivers measurable VF and EMI advantages essential for modern high-frequency, high-efficiency power conversion where thermal headroom and EMC compliance are constrained.
Availability
SBR10U45D1-T is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC modules, and telecom PoE injectors requiring stable component supply, long-term lifecycle support, and traceable green sourcing.
Supply support for SBR10U45D1-T 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 centers across Asia and manufacturing in China, Malaysia, and Taiwan.
The SBR® Super Barrier Rectifier product line targets high-efficiency power conversion in space-constrained, thermally demanding applications - specifically engineered to replace Schottky and fast recovery diodes where VF, softness, and temperature stability are critical.
FAQ
What is the maximum allowable case temperature for continuous 10A operation?
The SBR10U45D1-T is rated for IO = 10A at TC = +110°C, as specified in the Absolute Maximum Ratings table. Operation at this current requires adherence to the recommended 2-inch² aluminum board layout (AP02001) and proper thermal via placement beneath the tab to maintain RθJC = 6.0°C/W. Exceeding +110°C case temperature necessitates current derating per Figure 5.
Is the TO252 (DPAK) package lead-free and RoHS compliant?
Yes - the SBR10U45D1-T uses matte tin-plated copper leadframe terminals and green molding compound, meeting EU RoHS Directive 2011/65/EU (RoHS 2) with all applicable exemptions applied. It is also halogen- and antimony-free per Diodes Incorporated's "Green" definition (<900ppm Br/Cl, <1000ppm Sb), certified per IPC-1752A.
Does this device require a heatsink for 10A operation in free air?
No dedicated external heatsink is required if mounted per Diodes' AP02001 suggested pad layout on a 2-inch² aluminum board with ≥6 thermal vias under the tab. In standard FR4 PCBs without metal backing, 10A operation demands ≥400 mm² of 2-oz copper connected to the tab; forced airflow or thermal interface material may be needed beyond 5A in enclosed enclosures.
How does the soft-switching behavior impact EMI in a 500kHz buck converter?
Soft switching eliminates reverse recovery current spikes and associated high-frequency ringing, reducing peak EMI emissions by 8–10dB in the 30–100MHz band compared to fast recovery diodes. This allows smaller input filters and relaxed layout spacing between power and signal traces, verified in Diodes' reference design DER-482 for 48V→12V/10A converters.
SBR10U45D1-T 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:
- Obsolete
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR10U45D1-T FAQ
1.How can I place an order for SBR10U45D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR10U45D1-T 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 SBR10U45D1-T reliable?
The price and inventory of SBR10U45D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR10U45D1-T is usually 5 days.
3.What payment methods are accepted for SBR10U45D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR10U45D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR10U45D1-T?
SBR10U45D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR10U45D1-T 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 SBR10U45D1-T?
For technical support, including SBR10U45D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR10U45D1-T requirements.
6.How does Aetrix verify that SBR10U45D1-T is sourced from the original manufacturer or authorized distributors?
All SBR10U45D1-T 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 SBR10U45D1-T meets industry standards.
7.What is the process for return or replacement of SBR10U45D1-T?
All SBR10U45D1-T units undergo pre-shipment inspection (PSI). If there is an issue with SBR10U45D1-T, 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 SBR10U45D1-T part is unused and in its original packaging.
Return procedure for SBR10U45D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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