📌 Product Overview
The XL-1608SYGC-06 is a standard 0603 (1608 metric) Yellow-Green SMD LED designed for general indication and backlighting. 💡 Targeting power-sensitive consumer electronics and industrial instrument panels, this component leverages a transparent water colloid package to deliver a typical luminous intensity of up to 120 mcd. For design engineers, the critical selection variables are the tight Forward Voltage (Vf) distribution and the Moisture Sensitivity Level (MSL 3), which directly impacts SMT throughput and yield rates.
🎯 Typical Applications & Design Context
- Industrial Instrumentation: Ideal for electronic dashboards and control panels where the 565-575nm wavelength provides high contrast against dark backgrounds.
- Smart Home & White Goods: Suitable for status indicators on appliances and nixie tube displays due to low power consumption and wide 120° viewing angle.
- Automotive Interiors: Certified for non-critical automotive electronics like key backlights and indicator lights (Note: AEC-Q102 compliance must be verified for critical safety systems).
- Comms & IoT: Used in router status lights and set-top box indicators where board space is at a premium.
📊 Key Technical Specifications
| Parameter | Symbol | Min / Typ | Max | Unit | Condition |
|---|---|---|---|---|---|
| Luminous Intensity | Iv | - / - | 120 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 565 | 575 | nm | IF = 20mA |
| Forward Voltage | Vf | 1.8 | 2.4 | V | IF = 20mA |
| Viewing Angle | 2θ1/2 | - | 120 | deg | IF = 20mA |
| Reverse Voltage | Vr | - | 5 | V | - |
👇 Engineering Insight:
The Vf range spans 1.8V to 2.4V. In matrix circuits, failing to account for the 0.6V delta between the M17-9 and M18-5 bins can cause noticeable current imbalances or uneven brightness in bar displays.
⚠️ Absolute Maximum Ratings & Process Limits
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Max Forward Current | IF | 20 | mA |
| Peak Pulse Current | IFP | 80 | mA |
| Power Dissipation | PD | 50 | mW |
| ESD Tolerance | ESD | 2000 | V |
| Operating Temp | TOPR | -40 ~ +85 | °C |
| Storage Temp | TSTG | -40 ~ +85 | °C |
⚠️ Reliability Risk (MSL 3):
This component is rated MSL 3 (Level 3).
- Floor Life: Components must be mounted within 168 hours (7 days) of opening the moisture barrier bag.
- Failure Mode: Skipping the pre-bake process (typically 125°C for 24 hours depending on floor life exposure) before Reflow will induce "popcorning" (internal delamination) or latent reliability failures during operation.
🧩 Package, Dimensions & Assembly Notes
- Package: 1608 Metric (Imperial 0603).
- Dimensions: 1.6 (L) x 0.8 (W) x 0.6 (H) mm.
- Soldering Guidance: Designed for Lead-Free SMT processes.
- Reflow Profile: Peak temperature must not exceed 255°C (with Time Above Liquidus ~217°C limited to 40-60 seconds).
- Pad Design: Standard EIA recommendations for 0603 components should be used. Ensure thermal relief pads do not act as heat sinks during the reflow phase, which could cause cold solder joints or tombstoning.
🔍 Procurement & Sourcing Insights
- Bin Management: This datasheet lists distinct Brightness (D1/D2) and Voltage (M17-9 to M18-5) bins. When sourcing, explicitly define the required Bin Code (e.g., "Only accept D2 brightness"). Procuring "mixed bins" often leads to visual inconsistencies in the final product.
- Supply Chain Authenticity: In open markets (Huaqiangbei), verify packaging sealing. XINGLIGHT uses standard EIA taping, but MSL 3 damage from improper storage is a common hidden defect in spot market channels.
- Lead Time: 1608 LEDs are high-commodity items. While standard bins are usually stock, specific Vf/wavelength combinations may have a 2-4 week lead time.
- Validation: Always request a "First Article" inspection report including the actual Vf and IV measurement data against the specific bin codes.
❓ FAQ
Q: Can I drive this LED at 30mA for higher brightness?
A: No. The Absolute Maximum Continuous Forward Current is 20mA. Driving at 30mA will rapidly degrade the chip junction, causing permanent luminous intensity depreciation or thermal failure. Use a larger package (e.g., 2012 or 3528) if higher output is needed.
Q: What happens if I use a standard Sn63/Pb37 (Lead-based) profile?
A: The datasheet specifies a max soldering temperature of 260°C for manual soldering. For reflow, the lead-free peak limit is 255°C. A leaded profile (~235°C peak) is generally safer but ensure the time above liquidus is sufficient to form a proper joint, though the component is optimized for Lead-Free (260°C/10s limit).
Q: The brightness varies between batches. Is this normal?
A: Yes, if the Binning Code was not fixed. The datasheet shows a wide range (50-120 mcd). "D1" bins (50-80 mcd) are significantly dimmer than "D2" bins (80-120 mcd). To ensure consistent product appearance, you must lock the Brightness Bin code in your purchase order (PO).
Q: How strict is the MSL 3 requirement?
A: Very strict. If the vacuum-sealed bag has been open for more than 168 hours (7 days) in a factory environment (typically <30°C / 60% RH), you must bake the reels at 125°C for 24 hours before reflow. Failure to do so is a primary cause of LED failure in the field.
