📌 Product Overview
The XL-4014UYC-02 is a surface-mount device (SMD) LED from XINGLIGHT, housed in a compact 4.0 x 1.4 x 0.8 mm package. 💡 This component features a yellow luminous color with a colorless transparent colloid, designed primarily for efficient light emission in constrained spaces. The device is engineered for reliability, complying with RoHS directives and featuring a Moisture Sensitivity Level (MSL) of 3.
Target applications include status indicators, backlighting, and auxiliary illumination. 👇 Its design focus balances luminous intensity—ranging from 400 to 800 mcd—with a wide 120° viewing angle, making it suitable for uniform light strips and dashboard indicators. The component is fully compatible with standard SMT automated production lines and infrared reflow soldering processes.
🔦 Typical Applications
Based on the XL-4014UYC-02's optical characteristics and compact form factor, this component is optimized for the following use cases:
- Indoor & Commercial Lighting: Ideal for lamp tubes, light strips, and advertising boards requiring consistent yellow illumination.
- LCD Backlighting: Provides reliable status lighting or accent backlighting for display panels.
- Decorative Lighting: Suitable for integration into metal plate hard light strips where profile height is critical.
- Automotive Interior: Used for auxiliary lighting inside vehicles, subject to specific thermal validation.
- General Indication: Supports various other lighting and display categories requiring a 4014 footprint.
⚡ Key Technical Specifications
💡 The following electrical and optical parameters are measured under standard test conditions ($T_a = 25^\circ C$). Designers should pay close attention to the luminous intensity (Iv) and forward voltage (VF) variations when selecting bins for consistent BOM performance.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 400 | - | 800 | mcd | $I_F = 60\text{ mA}$ |
| Dominant Wavelength | $\lambda_d$ | 585 | - | 595 | nm | $I_F = 60\text{ mA}$ |
| Peak Wavelength | $\lambda_p$ | - | 590 | - | nm | $I_F = 60\text{ mA}$ |
| Forward Voltage | $V_F$ | 1.8 | - | 2.4 | V | $I_F = 60\text{ mA}$ |
| Viewing Angle | $2\theta_{1/2}$ | - | 120 | - | deg | $I_F = 60\text{ mA}$ |
| Reverse Current | $I_R$ | - | - | 5 | $\mu A$ | $V_R = 5\text{ V}$ |
🚨 Absolute Maximum Ratings & Process Limits
🔒 Exceeding these values may cause permanent damage to the device. Reliability in mass production depends on strict adherence to these thermal and electrical boundaries, particularly for pulse currents and soldering temperatures.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 200 | mW | $T_a = 25^\circ C$ |
| Max Continuous Forward Current | $I_F$ | 60 | mA | - |
| Peak Forward Current | $I_{FP}$ | 120 | mA | Pulse width $\le 0.1\text{ms}$, Duty $\le 1/10$ |
| Max Reverse Voltage | $V_R$ | 5 | V | - |
| ESD Ability | ESD | 2000 | V | - |
| Operating Temperature | $T_{OPR}$ | -40 ~ +85 | $^\circ C$ | - |
| Storage Temperature | $T_{STR}$ | -40 ~ +85 | $^\circ C$ | - |
| Soldering Temp/Time | $T_{SOL}$ | 260 | $^\circ C$ | $\le 6\text{ seconds}$ |
📦 Package, Dimensions & Assembly Notes
The XL-4014UYC-02 utilizes the standard 4014 metric footprint (4.0mm x 1.4mm) with a low profile height of 0.8mm. 👇 This physical structure allows for high-density mounting on PCBs while maintaining sufficient luminous output.
Assembly & Soldering:
- Packaging: Supplied in EIA standard compliant packaging for automated handling.
- SMT Process: Designed for infrared reflow soldering. For lead-free processes, the profile must strictly follow the peak body temperature limit (max $255^\circ C$) and time ($T_L > 217^\circ C$ for 60-90s) to prevent delamination or degradation.
- MSL Rating: With an MSL of 3, the components must be mounted within 168 hours of opening the vacuum-sealed bag to prevent moisture-induced cracking during reflow.
📈 Sourcing & Supply Considerations
To ensure supply chain stability and product consistency, procurement teams should consider the following factors:
- Bin Code Verification: Verify specific Brightness (E2-E7), Voltage (N12), and Wavelength (HY03-HY06) bin codes to match design requirements, as variations can affect uniformity.
- Authenticity & Channel: Source through authorized distributors to avoid counterfeit components that may not meet the stated luminous intensity or thermal resistance specs.
- Sample Evaluation: Request pre-production samples for thermal imaging tests under actual operating conditions to validate heat dissipation in the final housing design.
❓ Frequently Asked Questions (FAQ)
Q: What is the recommended footprint for the XL-4014UYC-02 on a PCB?
A: The XL-4014UYC-02 uses the standard 4014 SMD footprint. The land pattern should accommodate the 4.0 mm length and 1.4 mm width with appropriate pad sizing for solder fillets, typically slightly larger than the component dimensions to ensure wetting.
Q: Can this LED be used for automotive exterior lighting?
A: While the datasheet lists "Auxiliary lighting inside the car," automotive exterior applications require AEC-Q101 or AEC-Q102 qualification. This part lists general reliability standards (MIL-STD), so additional validation is required for harsh exterior environments.
Q: How do I manage the Moisture Sensitivity Level (MSL 3) during assembly?
A: MSL 3 components can be exposed to the factory floor environment (30°C / 60% RH) for up to 168 hours. If floor life exceeds this, or if the packaging is unsealed for longer, baking is required before reflow to prevent "popcorning" due to internal moisture expansion.
Q: What is the difference between Dominant Wavelength and Peak Wavelength for this yellow LED?
A: The Peak Wavelength ($\lambda_p$) is 590 nm, indicating the intensity maximum. The Dominant Wavelength ($\lambda_d$) ranges 585–595 nm, which defines the perceived color hue as observed by the human eye.
Q: What is the maximum current I can drive this LED at?
A: The Absolute Maximum Continuous Forward Current is 60 mA. While pulses up to 120 mA are allowed (duty $\le 1/10$), continuous operation above 60 mA will likely degrade the junction and shorten lifespan significantly.
Q: Is the XL-4014UYC-02 compatible with lead-free soldering profiles?
A: Yes, the datasheet explicitly lists a lead-free profile: Peak max $255^\circ C$ ($0/-5^\circ C$) with time above $217^\circ C$ limited to 60-90 seconds. Ensure the ramp-up and cooling rates do not exceed 3°C/s and 6°C/s respectively.
