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Diodes Incorporated SBR12U45LH1-13
- Part No.:
- SBR12U45LH1-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 5SP
- Datasheet:
-
SBR12U45LH1-13.pdf
- Description:
- DIODE SBR 45V 12A POWERDI5SP
- Quantity:
- Payment:
- Shipping:
Inventory:25,454
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Product details
Overview
SBR12U45LH1-13 from Diodes Incorporated is a 12A, 45V Super Barrier Rectifier (SBR®) in POWERDI®5SP-B package, featuring ultra-low 0.38V forward voltage at 12A/125°C and ≤0.3mA reverse leakage at 45V/125°C, designed specifically as a bypass diode in photovoltaic module substrings to prevent hot-spot damage under partial shading.
For engineers reviewing the SBR12U45LH1-13 datasheet, SBR12U45LH1-13 pinout, SBR12U45LH1-13 application, or SBR12U45LH1-13 equivalent, key selection criteria include junction temperature rating up to +200°C, low-profile 0.75mm height, protruding 7.6mm leads for glass-integrated solar panel assembly, and RoHS-compliant, halogen-free construction.
Technical Context
This SBR rectifier employs patented Super Barrier technology-distinct from Schottky or standard PN junctions-to achieve lower VF than conventional Schottkys while maintaining superior thermal stability and reduced IR drift at elevated temperatures. Its 200°C-rated junction enables sustained operation in sealed solar glass environments where ambient and self-heating combine.
The POWERDI5SP-B package integrates a thermally optimized copper leadframe with molded plastic (UL 94V-0), delivering 66°C/W junction-to-ambient thermal resistance on FR-4 PCBs. Polarity is marked by cathode bar on top surface and cathode notch on lead, supporting automated optical inspection in high-volume PV module production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; ensures reliable operation across standard PV string voltages with margin. |
| IO(AV) | 12 A - Average forward current rating at TA=25°C; supports sub-string bypass duty in 60-cell or 72-cell modules. |
| VF @ 12A/125°C | 0.38 V - Confirmed typical forward drop; reduces conduction loss to <4.6W per diode at full rated current and high temp. |
| IR @ 45V/125°C | 0.19 mA - Measured max reverse leakage; minimizes power loss in shaded cells and preserves panel output efficiency. |
| TJ(max) | +200°C - Guaranteed 2-hour junction temperature limit; enables use in encapsulated, thermally constrained solar glass assemblies. |
| RθJA | 66 °C/W - Thermal resistance on standard FR-4; defines heatsinking requirement for continuous 12A operation in open-frame designs. |
| Package | POWERDI5SP-B - 0.75mm profile, 7.6mm protruding leads; allows direct soldering into glass-embedded busbars without secondary mounting. |
Pinout & Package
POWERDI5SP-B is a 2-terminal surface-mount package with cathode-marked top surface and cathode-notched lead. The device has no internal die bonding wires; both terminals are formed from a single copper leadframe. Mounting requires symmetric thermal pad layout per AP02001 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to PV cell string anode side; carries full sub-string current during bypass conduction. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with bar and notch; ties to common busbar; blocks reverse voltage when upstream cells are shaded. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Rectifier technology | Enables 0.38V VF at 12A/125°C-lower than comparable Schottkys-without compromising high-temperature IR stability. |
| +200°C junction rating | Validated for 2-hour exposure at 200°C; supports long-term reliability in sealed, high-thermal-mass solar glass enclosures. |
| 0.75mm low-profile height | Permits integration beneath tempered glass without air gap or mechanical interference in laminated PV modules. |
| 7.6mm protruding leads | Enables direct solder attachment to embedded copper busbars inside solar panel laminate stack. |
| Halogen- and antimony-free "Green" construction | Meets IEC 61215-2 MQT 17.1 requirements for PV module material compatibility and long-term environmental safety. |
Applications
| Solar Panel Bypass Protection | PV Module String Monitoring Interface |
|---|---|
Use Scenario: Installed across individual PV cell substrings (e.g., 20–24 cells) to shunt current when shading or failure occurs. IC Role / Device Role / Timing Role: Passive bypass diode-no control logic or timing function; conducts only during reverse bias of shaded substring. Use Value: Prevents localized overheating (hot spots) and permanent cell degradation by limiting reverse voltage to ≤45V per substring. | Use Scenario: Integrated into smart junction boxes with voltage/current sensing to detect substring-level anomalies. IC Role / Device Role / Timing Role: Bypass element enabling safe measurement of open-circuit voltage across active substrings during diagnostic cycles. Use Value: Allows real-time health monitoring without disconnecting strings, leveraging stable VF and low IR for accurate baseline reference. |
| Building-Integrated Photovoltaics (BIPV) | Portable Solar Charging Systems |
Use Scenario: Embedded within curved or frameless glass façades where thermal dissipation is limited and height clearance is critical. IC Role / Device Role / Timing Role: Thermally robust bypass path operating continuously at elevated ambient (up to 85°C) and junction (up to 200°C) temperatures. Use Value: Maintains ≥99.8% conduction efficiency over 25-year service life due to minimal VF drift and IR increase at high temperature. | Use Scenario: Used in compact, lightweight portable solar panels for camping, RVs, and emergency power where weight and profile are constrained. IC Role / Device Role / Timing Role: Low-loss bypass component minimizing power waste during variable irradiance and partial shading conditions. Use Value: Delivers >0.5W extra usable power per 12A bypass path versus standard Schottky alternatives under real-world field conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solar bypass diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT12U45P1-13 | Same SBR die, but in POWERDI®5SP-A package (0.95mm height, non-protruding leads); RθJA = 72°C/W. | Less suitable for glass-embedded BIPV; better for PCB-mounted junction boxes with airflow. | Select when board-level thermal management is available and 0.75mm height is not required. |
| MBR1245CTG | Standard dual Schottky in TO-220AB; VF = 0.55V @ 12A/25°C; IR = 1.5mA @ 45V/125°C; TJ(max) = 175°C. | Requires heatsink and mechanical mounting; incompatible with laminated glass integration. | Choose only for retrofit or non-glass-encapsulated systems where cost is primary and thermal margin is ample. |
Compared with SBRT12U45P1-13, the SBR12U45LH1-13 offers 0.2mm lower profile and 7.6mm leads essential for glass lamination, while versus MBR1245CTG it delivers 30% lower conduction loss and 8× lower leakage at 125°C-critical for unventilated, high-reliability solar deployments.
Availability
SBR12U45LH1-13 is available at Aetrix Electronics and suitable for solar panel bypass protection, building-integrated photovoltaics (BIPV), and portable solar charging systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for SBR12U45LH1-13 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 SBR® product line was developed specifically for high-efficiency, high-reliability power conversion in photovoltaic, server power, and industrial DC systems-emphasizing low VF, high TJ rating, and robust package integration.
FAQ
What is the maximum allowable reverse voltage for continuous operation?
The SBR12U45LH1-13 is rated for 45V peak repetitive reverse voltage (VRRM). For continuous DC blocking in solar applications, it must be applied at ≤45V with appropriate derating per IEC 61215-typically 80% of VRRM (≤36V) for long-term reliability in high-temperature environments.
Can this diode replace a standard Schottky in existing solar designs?
Yes-if the PCB footprint and thermal layout match POWERDI5SP-B. It delivers lower VF and IR than most Schottkys at 125°C, improving efficiency by ~0.8% per substring. However, verify mechanical fit: its 0.75mm height and 7.6mm protruding leads differ from TO-277 or SMA packages.
Is the +200°C junction rating validated for lifetime operation?
The +200°C rating is guaranteed for 2 hours per JEDEC JESD22-A108 stress testing-not for continuous operation. Continuous rated TJ is +150°C; the +200°C capability ensures survival during transient overtemperature events like rapid irradiance spikes or temporary ventilation loss in sealed modules.
Does the POWERDI5SP-B package require special soldering profiles?
No special profile is needed beyond standard lead-free reflow (J-STD-020 Level 1). The package is moisture-sensitive Level 1, so baking is unnecessary. Use standard SnAgCu paste and follow Diodes' recommended pad layout (AP02001) to ensure thermal and mechanical reliability in field deployment.
SBR12U45LH1-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- PowerDI™ 5SP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 12 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 300 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI5SP™
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR12U45LH1-13 FAQ
1.How can I place an order for SBR12U45LH1-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR12U45LH1-13 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 SBR12U45LH1-13 reliable?
The price and inventory of SBR12U45LH1-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR12U45LH1-13 is usually 5 days.
3.What payment methods are accepted for SBR12U45LH1-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR12U45LH1-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR12U45LH1-13?
SBR12U45LH1-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR12U45LH1-13 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 SBR12U45LH1-13?
For technical support, including SBR12U45LH1-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR12U45LH1-13 requirements.
6.How does Aetrix verify that SBR12U45LH1-13 is sourced from the original manufacturer or authorized distributors?
All SBR12U45LH1-13 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 SBR12U45LH1-13 meets industry standards.
7.What is the process for return or replacement of SBR12U45LH1-13?
All SBR12U45LH1-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR12U45LH1-13, 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 SBR12U45LH1-13 part is unused and in its original packaging.
Return procedure for SBR12U45LH1-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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