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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

Founder and Strategic Sourcing Lead, LDeepAI

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.

Expertise: electronic component sourcing, China supply-chain verification, LED components, memory and storage sourcing, RFQ risk screening.

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