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Diodes Incorporated SBR12U45LH-13
- Part No.:
- SBR12U45LH-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 5SP
- Datasheet:
-
SBR12U45LH-13.pdf
- Description:
- DIODE SBR 45V 12A POWERDI5SP
- Quantity:
- Payment:
- Shipping:
Inventory:8,999
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SBR12U45LH-13 from Diodes Incorporated is a 12A Super Barrier Rectifier optimized for solar bypass applications, featuring 45V peak reverse voltage, 0.38V typical forward voltage at 12A/125°C, ≤0.3mA max reverse leakage at 45V/125°C, and a POWERDI5SP package with 0.75mm height and 9mm protruding leads for integration into solar glass panels.
For engineers reviewing the SBR12U45LH-13 datasheet, SBR12U45LH-13 pinout, SBR12U45LH-13 application, or SBR12U45LH-13 equivalent, key selection criteria include ultra-low VF at high temperature, +200°C rated junction capability, low-profile mechanical integration, and solar-specific thermal derating behavior under sustained ambient stress.
Technical Context
This device implements patented SBR® technology to achieve significantly lower forward voltage than standard Schottky or fast recovery diodes-enabling reduced conduction loss in photovoltaic bypass paths where continuous partial shading causes localized heating. Its thermal design supports 2-hour operation at +200°C junction temperature under DC forward bias, validated per Note 7 of DS35094 Rev. 9-3.
The POWERDI5SP package delivers 66°C/W junction-to-ambient thermal resistance on FR-4 with 2oz copper, and its cathode-bar-marked top surface plus cathode-notch lead enables unambiguous polarity identification during automated assembly-critical for field-replaceable solar module interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage before avalanche breakdown; sets upper limit for string voltage compatibility in PV modules. |
| IO (AV) | 12 A - Average rectified current rating at TA = +25°C; derates to ~7.5A at +100°C ambient per Fig. 5. |
| VF (typ) | 0.38 V @ 12A, +125°C - Confirmed forward drop enabling <4.6W conduction loss at full rated current and elevated temperature. |
| IR (max) | 0.3 mA @ 45V, +125°C - Low leakage preserves panel output under hot, shaded conditions where reverse bias dominates. |
| TJ (max) | +200°C - Guaranteed 2-hour operation at peak junction temperature; exceeds standard automotive and industrial limits for thermal margin. |
| RθJA | 66 °C/W - Measured on FR-4 PCB with minimum recommended pad layout; defines thermal headroom for passive heatsinking in module frames. |
Pinout & Package
Encapsulated in POWERDI5SP: surface-mount, low-profile (0.75mm), 5-pin outline with two anode terminals (A1, A2), one cathode terminal (C), and two thermal pads (T1, T2) tied internally to cathode-designed for direct soldering onto solar module PCBs with minimal Z-height impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Anode inputs | Dual parallel anode connections reduce current density per bond wire and improve surge handling (IFSM = 300A). |
| C | Cathode output | Primary current return path; marked by cathode bar on top surface and notch on lead for visual polarity verification. |
| T1, T2 | Thermal pads | Exposed copper pads on bottom surface-internally connected to cathode-to enhance heat transfer to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 0.38V typ @ 12A/+125°C reduces forward power loss by >35% vs. comparable Schottky diodes in same package. |
| +200°C junction rating | Guaranteed 2-hour operation at maximum TJ-enables reliable bypass function during prolonged hot-spot events in solar arrays. |
| Low-profile POWERDI5SP | 0.75mm height + 9mm protruding leads allows full integration within laminated solar glass without air gap or frame interference. |
| Solar-optimized leakage | ≤300µA @ 45V/+25°C and ≤0.3mA @ 45V/+125°C minimizes parasitic shunt loss under partial shading and high-temperature operation. |
Applications
| Solar Panel Bypass Diode | Photovoltaic String Protection |
|---|---|
Use Scenario: Installed across individual PV cell substrings to prevent hot-spot damage during partial shading or soiling. IC Role / Device Role / Timing Role: Unidirectional current shunt that conducts only when substring voltage exceeds adjacent substring voltage due to mismatch. Use Value: Enables full-string power extraction despite localized shading; thermal robustness prevents failure during sustained +150°C ambient exposure in rooftop installations. | Use Scenario: Embedded in junction boxes of commercial solar modules to protect series-connected substrings from reverse-bias overstress. IC Role / Device Role / Timing Role: Standby-blocking rectifier that remains reverse-biased under normal illumination, then rapidly conducts during mismatch events. Use Value: 300A non-repetitive surge rating handles transient overcurrent from lightning-induced string imbalances without degradation. |
| Building-Integrated PV (BIPV) | Off-Grid Solar Charge Control |
Use Scenario: Mounted directly on thin-film or crystalline solar laminates integrated into façades or roofing membranes. IC Role / Device Role / Timing Role: Low-height bypass element mechanically constrained by glass thickness and lamination pressure. Use Value: 0.75mm profile and protruding leads allow solder joint formation without compromising encapsulant adhesion or glass seal integrity. | Use Scenario: Used in small-scale solar charge controllers for RVs, cabins, and telecom shelters with limited thermal mass. IC Role / Device Role / Timing Role: Reverse-polarity protection and battery-side isolation diode in unregulated PWM charge stages. Use Value: Low VF minimizes voltage drop between panel and battery-preserving usable charging voltage at low irradiance (<200W/m²). |
Availability
SBR12U45LH-13 is available at Aetrix Electronics and suitable for solar bypass diode applications, photovoltaic string protection circuits, and building-integrated PV modules requiring stable component supply and long-term thermal reliability.
Supply support for SBR12U45LH-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® Super Barrier Rectifier product line targets high-efficiency power conversion in solar, computing, and industrial systems-specifically engineered to replace Schottky diodes where ultra-low VF and high-temperature stability are critical.
Equivalent & Alternatives
The following parts are listed as comparable options for similar solar bypass diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-12BQ040-M3/86A | 40V VRRM, 12A IO, 0.42V VF @ 12A/125°C, TO-277 package (1.1mm height) | Lacks +200°C junction rating; higher VF increases conduction loss in high-temp environments | Acceptable for lower-voltage strings (<36V) where thermal margin is less constrained |
| ON Semiconductor NSR12C45P3T4G | 45V VRRM, 12A IO, 0.45V VF @ 12A/125°C, PowerFLAT 5x6 package (1.0mm height) | No protruding leads; requires larger PCB footprint and lacks solar-glass integration capability | Preferred where board-level heatsinking is available and module Z-height is not limiting |
Compared with VS-12BQ040-M3/86A and NSR12C45P3T4G, the SBR12U45LH-13 uniquely combines 45V blocking, ultra-low VF at +125°C, +200°C junction rating, and 0.75mm POWERDI5SP packaging-making it the only option qualified for direct integration into space-constrained, thermally aggressive solar glass assemblies.
FAQ
Is SBR12U45LH-13 suitable for new designs?
No-Diodes Incorporated explicitly marks this part as "NOT RECOMMENDED FOR NEW DESIGN USE" in DS35094 Rev. 9-3. It remains available for legacy production and repair, but engineers should evaluate newer SBR variants like SBR12U45LH-13's successor SBR12U45LH2 or alternative high-temp rectifiers before initiating new solar module designs.
What does the "LH" suffix indicate in SBR12U45LH-13?
The "LH" denotes the POWERDI5SP package variant with low-height profile (0.75mm) and protruding leads. It distinguishes this version from earlier SBR12U45 variants in TO-277 or PowerFLAT packages, confirming mechanical compatibility with solar glass lamination processes and automated placement equipment calibrated for leaded SMT components.
How is thermal performance validated at +200°C?
DS35094 Note 7 specifies that +200°C junction temperature is guaranteed for 2 hours under DC forward bias at maximum rated current. This is verified via accelerated life testing-not transient simulation-and applies only when VR ≤ 80% VRRM and thermal management meets the recommended pad layout referenced in the datasheet.
Does SBR12U45LH-13 meet halogen-free and RoHS requirements?
Yes-per Notes 1–3 in DS35094, SBR12U45LH-13 features lead-free finish, complies with RoHS 2 (2011/65/EU), and is classified as "Green": containing <900ppm bromine, <900ppm chlorine (total Br+Cl <1500ppm), and <1000ppm antimony compounds-verified through material declarations and third-party lab testing.
SBR12U45LH-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- PowerDI™ 5SP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Fast 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
SBR12U45LH-13 FAQ
1.How can I place an order for SBR12U45LH-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR12U45LH-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 SBR12U45LH-13 reliable?
The price and inventory of SBR12U45LH-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR12U45LH-13 is usually 5 days.
3.What payment methods are accepted for SBR12U45LH-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR12U45LH-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR12U45LH-13?
SBR12U45LH-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR12U45LH-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 SBR12U45LH-13?
For technical support, including SBR12U45LH-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR12U45LH-13 requirements.
6.How does Aetrix verify that SBR12U45LH-13 is sourced from the original manufacturer or authorized distributors?
All SBR12U45LH-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 SBR12U45LH-13 meets industry standards.
7.What is the process for return or replacement of SBR12U45LH-13?
All SBR12U45LH-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR12U45LH-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 SBR12U45LH-13 part is unused and in its original packaging.
Return procedure for SBR12U45LH-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR12U45LH-13 Tags
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