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Diodes Incorporated SBR1045SD1-T
- Part No.:
- SBR1045SD1-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SBR1045SD1-T.pdf
- Description:
- DIODE SBR 45V 10A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,831
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Product details
Overview
SBR1045SD1-T from Diodes Incorporated is a 10A, 45V Super Barrier Rectifier in DO-201AD package, designed specifically as a bypass diode in photovoltaic module strings. It delivers ultra-low forward voltage (0.48 V at 10A, 25°C), high surge capability (180A IFSM), and complies with IEC 61730-2 for solar bypass applications.
For engineers reviewing the SBR1045SD1-T datasheet, SBR1045SD1-T pinout, SBR1045SD1-T application, or SBR1045SD1-T equivalent, key selection criteria include forward voltage at 10A/125°C, thermal resistance (RθJL = 9°C/W), reverse leakage at 150°C, compliance with solar bypass standards, and DO-201AD mechanical footprint compatibility.
Technical Context
This SBR device uses patented Super Barrier Rectifier technology to achieve lower VF than standard Schottky diodes while maintaining higher reverse blocking integrity and superior high-temperature stability. Its design targets sustained operation under partial shading in solar arrays, where low conduction loss and robust thermal performance are critical.
The device is rated for 10A average rectified current at TC = 110°C, with RθJL = 9°C/W enabling efficient heat transfer to the PCB. It meets IEC 61730-2 requirements via validated thermal modeling (TJmax ≤ TL/C + RthL/C × VF × Ise) under short-circuit conditions at TA = 75°C for 1 hour.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM / VRWM | 45 V - Maximum reverse blocking voltage; ensures safe operation across PV string open-circuit voltages up to 45V. |
| IO @ TC=110°C | 10 A - Continuous DC current rating at heatsink temperature; defines usable current capacity in real module mounting conditions. |
| VF @ 10A, 25°C | 0.48 V - Measured forward drop; directly reduces power loss and thermal stress in bypass paths during shading events. |
| IFSM (8.3ms) | 180 A - Non-repetitive surge rating; withstands transient overcurrents from cell mismatch or lightning-induced surges. |
| IR @ 45V, 150°C | 100 µA - Reverse leakage at max junction temperature; ensures minimal shunt loss and long-term reliability in hot desert installations. |
| RθJL | 9 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to copper pads for effective heat dissipation without heatsinks. |
| TJ Operating Range | –65°C to +150°C - Full operational range supports deployment in extreme ambient environments including rooftop, desert, and alpine PV sites. |
Pinout & Package
Package: DO-201AD molded plastic case (UL 94V-0), 0.121 g weight, tin-plated leads, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry point during forward conduction | Connected to shaded PV substring cathode; must handle full string current during bypass mode. |
| Cathode (K) | Current exit point during forward conduction | Connected to common bus or adjacent substring anode; polarity determines bypass path direction in series string. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR technology | Enables 0.48 V VF at 10A/25°C - 150 mV lower than comparable Schottky diodes - reducing thermal runaway risk in parallel bypass configurations. |
| IEC 61730-2 compliance | Validated TJmax model ensures reliable operation under 1-hour short-circuit at 75°C ambient - mandatory for UL 1703 and TÜV certification of PV modules. |
| High-temperature leakage control | 100 µA IR at 45V/150°C - limits parasitic power loss in hot climates and extends module lifetime beyond 25 years. |
| DO-201AD mechanical standardization | Industry-standard footprint compatible with automated placement and reflow profiles used in high-volume PV module assembly lines. |
Applications
| Photovoltaic Module Bypass | String-Level Fault Protection |
|---|---|
Use Scenario: Installed across individual PV substrings (e.g., 24-cell sections) within a 60- or 72-cell panel to maintain output when cells are shaded or damaged. IC Role / Device Role / Timing Role: Unidirectional current shunt that conducts only during reverse bias of the substring, preventing hot-spot heating. Use Value: Reduces localized temperature rise from >150°C to <90°C under shading, meeting IEC 61215 thermal stress requirements. | Use Scenario: Deployed in commercial rooftop arrays where string fusing is impractical and ground-fault detection relies on consistent bypass behavior. IC Role / Device Role / Timing Role: Fast-acting fault path that activates within microseconds of substring reverse bias onset, limiting energy dissipation during arc faults. Use Value: Enables reliable detection of ground faults by preserving measurable current imbalance upstream of the bypass location. |
| Off-Grid Solar Charge Controllers | Portable Solar Generator Inputs |
Use Scenario: Integrated into MPPT charge controllers for RVs and cabins to prevent reverse current flow from battery to panels at night. IC Role / Device Role / Timing Role: Blocking diode in low-voltage DC input stage (12–48 V), operating continuously at 5–10 A under variable irradiance. Use Value: 0.48 V VF minimizes daily energy loss (~1.2 Wh per 10A·h), improving net harvest in low-light conditions. | Use Scenario: Used in foldable solar blankets (e.g., 100W portable units) where space-constrained DO-201AD mounting simplifies PCB layout. IC Role / Device Role / Timing Role: Input protection diode handling intermittent surges from rapid cloud transients and load switching. Use Value: 180A IFSM rating withstands 200% short-duration irradiance spikes without degradation, ensuring field reliability. |
Availability
SBR1045SD1-T is available at Aetrix Electronics and suitable for photovoltaic module manufacturing, off-grid solar charge controller design, and portable solar generator development requiring stable component supply and full IEC 61730-2 compliance.
Supply support for SBR1045SD1-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 and manufacturing operations across Asia and the Americas.
The SBR® (Super Barrier Rectifier) product line was developed to replace conventional Schottky and fast recovery diodes in high-efficiency power conversion systems where low VF, high TJ stability, and reliability under thermal cycling are essential - especially in solar, computing, and industrial power supplies.
FAQ
What is the maximum junction temperature this diode can sustain during continuous operation?
The SBR1045SD1-T has a rated operating junction temperature range of –65°C to +150°C. Under continuous 10A conduction at TC = 110°C and typical PCB mounting (2 oz Cu, AP02001 pad layout), measured TJ remains below 135°C, well within the 150°C absolute maximum limit specified in DS31351 Rev. 5–2.
How does its forward voltage compare to standard Schottky diodes at elevated temperature?
At 10A and 125°C, VF is 0.53 V - only +0.05 V higher than its 25°C value (0.48 V). This 10.4% drift is significantly better than standard Schottky diodes (typically +0.15–0.25 V drift over same range), due to SBR's barrier engineering, which maintains stable conduction under thermal stress.
Is this part suitable for use in UL 1703-certified photovoltaic modules?
Yes - the SBR1045SD1-T is explicitly validated per IEC 61730-2 Annex D for solar bypass diodes, including thermal modeling of TJmax under short-circuit conditions. Diodes Incorporated provides test reports confirming compliance, making it acceptable for inclusion in UL 1703 and TÜV Rheinland certified PV modules.
Can it be used as a freewheeling diode in DC-DC converters?
While functional, it is not optimized for high-frequency switching applications. Its 45V VRRM and low VF suit low-frequency (<100 kHz), high-current freewheeling roles (e.g., in solar charge controllers), but its capacitance (≈100 pF at 0 V) and lack of specified reverse recovery time make it less suitable than dedicated fast-recovery or SiC diodes for MHz-range converters.
SBR1045SD1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- DO-201AD, Axial
- 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:
- 550 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 450 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR1045SD1-T FAQ
1.How can I place an order for SBR1045SD1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1045SD1-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 SBR1045SD1-T reliable?
The price and inventory of SBR1045SD1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1045SD1-T is usually 5 days.
3.What payment methods are accepted for SBR1045SD1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1045SD1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1045SD1-T?
SBR1045SD1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1045SD1-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 SBR1045SD1-T?
For technical support, including SBR1045SD1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1045SD1-T requirements.
6.How does Aetrix verify that SBR1045SD1-T is sourced from the original manufacturer or authorized distributors?
All SBR1045SD1-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 SBR1045SD1-T meets industry standards.
7.What is the process for return or replacement of SBR1045SD1-T?
All SBR1045SD1-T units undergo pre-shipment inspection (PSI). If there is an issue with SBR1045SD1-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 SBR1045SD1-T part is unused and in its original packaging.
Return procedure for SBR1045SD1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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