📌 Product Overview
The XL-1608UOC-06 is a standard 0603 (Imperial 1608) surface-mount device (SMD) LED manufactured by XINGLIGHT. It utilizes a clear water colloid encapsulation to deliver a dominant orange wavelength (λd) of 600-610nm. This component is designed for automated SMT production and targets low-power indication and backlighting scenarios. For engineering teams, the critical selection variables are the wide 120° viewing angle for uniform panel lighting and the specific Forward Voltage (Vf) binning required for multi-LED circuit stability in automotive and industrial interfaces.
🎯 Typical Applications & Design Context
Based on its 0603 footprint and optical characteristics, this component is optimized for:
- Industrial Instrumentation: Ideally suited for electronic instrument panels and industrial status indicators where long-term reliability is critical.
- Automotive Electronics: Used for interior backlighting and key indicators, provided the ambient temperature does not exceed the rated +85°C.
- Consumer Communication: Fits router status lights and set-top box indicators due to low power consumption and wide viewing angle.
- Medical Devices: Applicable for oximeters and endoscope indicators, assuming compliance with specific medical wavelength and sterilization requirements.
📊 Key Technical Specifications
The table below summarizes the critical optical and electrical parameters under standard test conditions (Ta=25°C, IF=20mA).
| Parameter | Symbol | Min | Typ. | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 80 | - | 210 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 600 | - | 610 | nm | IF = 20mA |
| Forward Voltage | Vf | 1.8 | - | 2.4 | V | IF = 20mA |
| Viewing Angle | 2θ1/2 | - | 120 | - | deg | IF = 20mA |
| Reverse Current | Ir | - | - | ≤1 | μA | VR = 5V |
💡 Engineering Note: The wide variance in Luminous Intensity (80-210 mcd) necessitates strict binning management at the procurement stage to ensure visual consistency across the production panel.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these parameters risks immediate catastrophic failure or latent thermal damage.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | Pd | 50 | mW | Derate above 25°C ambient |
| Max Forward Current | If | 20 | mA | Continuous DC |
| Peak Forward Current | Ifp | 80 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | Vr | 5 | V | - |
| ESD Susceptibility | ESD | 2000 | V | Human Body Model (HBM) |
| Operating Temp | Topr | -40 ~ +85 | °C | Performance degrades at limits |
⚠️ Process Alert:
- SMT Thermal Stress: The component is rated for a maximum soldering temperature of 260°C for ≤6 seconds. Exceeding this profile can delaminate the encapsulant or damage the die bond.
- Moisture Sensitivity (MSL): This component is classified as MSL 3. It must be baked prior to reflow if the floor life (168 hours at <30°C/60%RH) is exceeded to prevent "popcorning" (internal cracking) during the high heat of IR reflow.
🧩 Package, Dimensions & Assembly Notes
- Package: 0603 (Metric 1608).
- Dimensions (LxWxH): 1.6mm × 0.8mm × 0.6mm.
- Soldering Guidelines:
- Lead-Free Process: Max temp 235°C, time above 217°C: 60-120s.
- Lead Process: Max temp 260°C, time above 183°C: 60-150s.
- Peel Stress: Due to the low 0.6mm profile, avoid excessive mechanical peeling force during PCB inspection.
🔍 Procurement & Sourcing Insights
- Binning Codes: When ordering, specify the Brightness (D2-D5) and Voltage (M17-9 to M18-5) bins. Mixing bins can cause visible unevenness in uniform panels or current imbalance in matrix circuits.
- Alternative Validation: When substituting with other 0603 LEDs, verify the footprint tolerance. While 0603 is standard, the height of 0.6mm is relatively low; ensure the pick-and-place nozzle fits without cracking the lens.
- Supply Chain: Confirm that the XINGLIGHT brand stock is genuine and MSL 3 compliant. Non-compliant stock often leads to field failures in automotive applications due to moisture ingress.
❓ FAQ
Q: Can this LED be used for outdoor automotive exterior lighting?
A: No. The operating temperature range is -40°C to +85°C. Exterior automotive applications often exceed +85°C (under-hood or direct sunlight), and the 50mW power dissipation is insufficient for high-intensity lighting. It is designed for interior indicators only.
Q: What is the risk of ignoring the MSL Level 3 rating?
A: If the components are exposed to ambient humidity for more than 168 hours and not baked (typically 125°C for 24 hours) before reflow, the residual moisture inside the package will vaporize rapidly during SMT. This causes internal pressure (popcorning), leading to delamination or cracked encapsulants, which may pass initial test but fail prematurely in the field.
Q: Why does the datasheet list a peak current of 80mA if the max is 20mA?
A: The 80mA rating is for pulsed operation only (e.g., multiplexed displays). You must adhere to the duty cycle (≤1/10) and pulse width (≤0.1ms). Driving it at 80mA continuously will burn out the LED.
Q: How should I handle the Vf binning for my design?
A: For designs with multiple LEDs in parallel, uncontrolled Vf variance can cause uneven brightness or current hogging. Procurement should request a single Vf bin (e.g., M18-2) to ensure uniform current distribution across the PCB.
