Diodes Incorporated SBR12U45LH1-13R

Overview

SBR12U45LH1-13R from Diodes Incorporated is a 12A Super Barrier Rectifier (SBR®) in POWERDI®5SP-B package, rated for 45V peak repetitive reverse voltage, 0.38V typical forward voltage at 12A/125°C, and 0.3mA max reverse leakage at 45V/125°C; designed specifically as a bypass diode in photovoltaic module strings to prevent hot-spot damage under partial shading.

For engineers reviewing the SBR12U45LH1-13R datasheet, SBR12U45LH1-13R pinout, SBR12U45LH1-13R application, or SBR12U45LH1-13R equivalent, key selection criteria include ultra-low VF for thermal efficiency in confined solar glass assemblies, +200°C junction-rated thermal robustness, low-profile 0.75mm height, and protruding 7.6mm leads enabling direct integration into laminated panel interconnects.

Technical Context

This SBR employs patented Super Barrier Rectifier technology-distinct from Schottky or standard PN junctions-to achieve lower forward voltage than conventional Schottkys while maintaining superior high-temperature reverse leakage performance. Its architecture enables stable operation up to +200°C junction temperature with guaranteed 2-hour endurance.

The device operates under DC blocking conditions up to 45V, supports 12A average rectified current with 300A non-repetitive surge capability, and exhibits <0.3mA IR at full VRRM and +125°C-critical for minimizing power loss in series-connected solar strings where reverse bias across shaded cells drives leakage current.

Key Specifications

Pinout & Package

Encapsulated in POWERDI®5SP-B: surface-mount, single-row, 2-terminal package with cathode bar marking on top surface and cathode notch on lead; overall dimensions 4.40 × 21.0 × 0.75 mm (W × L × H), featuring 7.6mm protruding leads for mechanical anchoring in laminated glass.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar solar bypass diode applications.

Compared with SBRT12U45-13 and MBR1245CTG, the SBR12U45LH1-13R uniquely combines ultra-low VF, sub-mA high-temp leakage, +200°C capability, and laminable 0.75mm profile-making it the only option qualified for next-generation thin-glass and BIPV bypass integration.

Availability

SBR12U45LH1-13R is available at Aetrix Electronics and suitable for photovoltaic bypass protection, solar panel string management, and high-temperature solar enclosures requiring stable component supply and long-term field reliability.

Supply support for SBR12U45LH1-13R 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 delivers high-efficiency, high-reliability rectifiers using proprietary barrier technology-specifically engineered for solar bypass, OR-ing, and high-temperature power conversion applications where low VF and low IR are critical.

FAQ

What is the maximum continuous forward current rating for SBR12U45LH1-13R at +100°C ambient?

At +100°C ambient temperature on a standard FR-4 PCB with 2oz copper, the SBR12U45LH1-13R is rated for approximately 6.5A average forward current, based on the derating curve in Figure 5 of DS36233 Rev. 7–2. This reflects thermal limitation from its 66°C/W junction-to-ambient resistance and +200°C max junction temperature capability.

Can SBR12U45LH1-13R be used in place of a standard Schottky diode in solar bypass applications?

Yes-SBR12U45LH1-13R replaces standard Schottkys with measurable advantages: 0.38V VF at 12A/125°C versus typical 0.55–0.65V, and 0.3mA IR at 45V/125°C versus 1–3mA. These differences directly reduce power loss and hot-spot risk in real-world solar string operation, especially under elevated temperature and partial shading.

Is the POWERDI®5SP-B package compatible with standard reflow soldering profiles?

Yes-the POWERDI®5SP-B package is qualified for standard lead-free reflow profiles (J-STD-020 Level 1). Its molded plastic case meets UL 94V-0 flammability rating, and the device has been characterized for thermal cycling reliability in PV module lamination processes, including exposure to 150°C pre-heat and 240°C peak reflow zones.

Does SBR12U45LH1-13R meet halogen-free and RoHS requirements?

Yes-SBR12U45LH1-13R features a lead-free finish and complies with RoHS 2 (2011/65/EU), containing <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony compounds. It is certified "Green" per Diodes Incorporated's environmental policy and carries appropriate marking per JEDEC standards.