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XL-2106SURC SMD LED: Specs, Thermal Limits & SMT Process

The XL-2106SURC is a standard 0805 SMD red LED designed for high-brightness indication and status light applications. This technical brief provides OEM engineers with critical data on forward voltage consistency, mois...

XL-2106SURC SMD LED: Specs, Thermal Limits & SMT Process

📌 Product Overview

The XL-2106SURC is a compact 2.1x0.8x1.0mm surface-mount device (SMD) designed by XINGLIGHT for high-brightness red emission. 💡 It utilizes a water-clear colloid package to maximize luminous intensity while maintaining a standard footprint compatible with automated pick-and-place machinery.

This component is engineered for applications requiring stable optical performance and reliable solder joint integrity under thermal stress. 👉 With a dominant wavelength range of 615–630nm, it serves as a robust solution for status indicators and backlighting in space-constrained designs.

🔌 Typical Applications

Based on the 0805 package size and 20mA drive current, the XL-2106SURC is suitable for the following scenarios:

  • PCBA & Consumer Electronics: Status indicators on motherboards and peripherals.
  • Automotive Electronics: Dashboard illumination and interior signal lights (subject to AEC qualification).
  • Home Appliances: Operation displays for white goods and HVAC controls.
  • Traffic & Toys: 👉 Low-power visual signals and educational electronic kits.
  • Beauty & Lighting: Compact indicator lights in personal care devices.

📊 Key Technical Specifications

The XL-2106SURC operates with a forward voltage (VF) range of 1.7V to 2.3V at 20mA, allowing for integration into standard 3.3V or 5V logic circuits. 💡 The luminous intensity (IV) is graded between 80 mcd and 240 mcd, ensuring brightness consistency across batches.

ParameterSymbolMinTyp.MaxUnitCondition
Luminous IntensityIV80-240mcdIF=20mA
Dominant Wavelengthλd615-630nmIF=20mA
Forward VoltageVF1.7-2.3VIF=20mA
Viewing Angle2θ1/2--120degIF=20mA
Reverse CurrentIR--≤5μAVR=5V

⚠️ Absolute Maximum Ratings & Process Limits

Exceeding these parameters risks permanent damage to the LED. 👇 Thermal management is critical, as the maximum power dissipation (PD) is rated at 50mW.

ParameterSymbolValueUnitNotes
Max Power DissipationPD50mWTa=25°C
Max Forward CurrentIF20mAContinuous
Peak Forward CurrentIFP80mAPulse width ≤0.1ms, Duty ≤1/10
Max Reverse VoltageVR5V-
ESD SusceptibilityESD2000VHuman Body Model (HBM)
Operating TemperatureTOPR-40 ~ +85°C-

Note: 🔒 For soldering, lead soldering must not exceed 260°C for more than 6 seconds to prevent package delamination.

🏗️ Package, Dimensions & Assembly Notes

The XL-2106SURC features a standard 0805 footprint with precise dimensions of 2.1mm (L) x 0.55mm (W) x 1.01mm (H). This profile supports high-density placement on modern PCBs.

Soldering Guidelines:

  • Process: Suitable for standard SMT reflow soldering.
  • Moisture Sensitivity: Classified as MSL 3. 👉 Floor life after opening the sealed bag is limited (168 hours); baking is required if exposure limit is exceeded.
  • Compatibility: EIA standard packaging format ensures compatibility with automated feeders.

🚢 Sourcing & Supply Considerations

When procuring the XL-2106SURC for mass production, consider the following to ensure supply chain stability:

  • Binning Codes: Verify specific voltage (N11-x) and brightness (D2-D6) bins to match circuit design tolerances.
  • Authenticity: Source exclusively from authorized XINGLIGHT distributors to avoid counterfeit components with inconsistent thermal performance.
  • Lead Time: 0805 LEDs are generally high-volume commodities, but specific bin codes may have varying availability. 💡 It is advisable to hold a small buffer stock of critical bins to mitigate SMT line downtime.

❓ FAQ

Q: What is the Moisture Sensitivity Level (MSL) of the XL-2106SURC?
A: The XL-2106SURC is classified as MSL 3 (Level 3). This means the component can be exposed to a factory environment (30°C/60%RH) for up to 168 hours after the moisture barrier bag is opened before it requires baking prior to reflow soldering.

Q: Can this LED be used in automotive applications?
A: While the datasheet lists "Automotive Electronics" as a product application, design engineers must verify if the specific batch meets AEC-Q102 or other automotive reliability standards required for their specific project, as standard commercial parts may not qualify for under-hood use.

Q: What is the maximum soldering temperature for manual repair?
A: For manual soldering or touch-up, the maximum temperature is 260°C with a duration of ≤6 seconds. Exceeding this time or temperature can degrade the epoxy encapsulant and damage the die bond.

Q: How should I calculate the current limiting resistor for a 5V supply?
A: With a typical forward voltage (VF) of 2.0V and a target current (IF) of 20mA, the resistance is calculated as R = (V_supply - V_LED) / I_led. For a 5V supply: (5V - 2.0V) / 0.02A = 150Ω. A standard 150Ω or 180Ω resistor is appropriate.

Q: What does the brightness grading code (e.g., D2, D6) mean?
A: The brightness code groups LEDs by luminous intensity. For example, grade "D2" ranges from 80 to 120 mcd, while "D6" covers 210 to 240 mcd. 👉 Selecting the correct grade ensures visual uniformity across an array of indicators on the same panel.

About Leon Zhang

Leon Zhang is the founder of LDeepAI, focusing on AI-assisted electronic component sourcing and verified China supply-chain support for overseas buyers. He previously worked within the Huaqiang Group ecosystem, including experience related to HQEW, one of China's well-known electronic component trading platforms. This background gives him practical insight into China's electronic component supply-chain structure, supplier screening, channel verification and cross-border sourcing workflows.

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