📌 Product Overview
The XL-1608UYC-06 is a standard 0603 (1608 metric) SMD Yellow LED designed for general-purpose indication and backlighting. 💡 Targeting high-density PCB designs in consumer electronics, automotive clusters, and industrial instrumentation, this component balances luminous intensity with power efficiency. For engineering teams, the critical selection variables are the tight wavelength binning (585-595nm) for color consistency and the 120° viewing angle, which ensures wide visibility status indicators in compact spaces.
🎯 Typical Applications & Design Context
Based on its 1.6x0.8mm footprint and robust environmental ratings (-40°C to +85°C), the XL-1608UYC-06 is ideally suited for:
- Automotive Electronics: 🚗 Non-critical interior indicator lights and keypad backlights where dashboard ambient temperature stability is required.
- Industrial Human-Machine Interfaces (HMI): Status LEDs on control panels, leveraging the wide 120° angle for side-view visibility.
- Smart Home & White Goods: 🏠 Interface indicators for HVAC systems or appliances, where the yellow/transparent water colloid provides clear visual feedback.
- Communication Devices: Router and set-top box status lights, benefiting from low power consumption (max 20mA).
📊 Key Technical Specifications
The following parameters define the optical and electrical performance window under standard test conditions (Ta=25°C):
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 80 | - | 210 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 585 | - | 595 | nm | IF = 20mA |
| Forward Voltage | VF | 1.8 | - | 2.4 | V | IF = 20mA |
| Viewing Angle | 2Ø1/2 | - | 120 | - | deg | IF = 20mA |
| Reverse Voltage | VR | - | - | 5 | V | IR = ≤1μA |
📈 Binning Code:
- Brightness: D2 (80-120 mcd) to D5 (180-210 mcd)
- Voltage: M17-9 (1.8-1.9V) to M18-5 (2.3-2.4V)
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these limits results in immediate catastrophic failure or latent reliability defects. 👇
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Max Forward Current | IF | 20 | mA | Continuous DC current. |
| Peak Forward Current | IFP | 80 | mA | Pulse width ≤0.1ms, Duty ≤1/10. |
| Max Power Dissipation | PD | 50 | mW | Dependent on PCB copper area. |
| ESD Tolerance | ESD | 2000 | V | Human Body Model (HBM). |
| Operating Temperature | TOPR | -40~+85 | °C | Ambient range. |
⚡ E-E-A-T Insight:
While the datasheet permits a peak current of 80mA, engineering validation must account for thermal derating. 💥 Running at max 20mA continuous near the upper thermal limit (85°C) requires adequate PCB copper pour for heat dissipation. Furthermore, the 2000V ESD rating is standard but modest; for PCBAs handled frequently before enclosure assembly, additional ESD protection measures in the circuit design are recommended to prevent field failures.
🧩 Package, Dimensions & Assembly Notes
- Package Type: 0603 (Imperial) / 1608 (Metric) SMD.
- Dimensions: 1.6mm (L) x 0.8mm (W) x 0.6mm (H).
- Moisture Sensitivity Level (MSL):Level 3. 🏭
- Critical SMT Alert: Floor life after opening the sealed bag is 168 hours. Exceeding this requires baking (125°C for 24 hours standard) to prevent "popcorning" or delamination during reflow.
- Reflow Profile: Compatible with both Lead-free (Peak 255°C) and Lead-based (Peak 235°C) processes. Follow the thermal ramp-up rate (<3°C/sec) to minimize thermal shock.
🔍 Procurement & Sourcing Insights
- Alternative Strategy: The 0603 package is globally standard. When validating alternatives (e.g., from Everlight, Liteon, or local Huaqiangbei sources), strictly match the Voltage Bin (M17-9 to M18-5). A mismatch in Vf can cause uneven brightness in series-wired strings or inconsistent current draw in resistor-limited circuits.
- Color Consistency: Yellow LEDs vary visibly in hue. For automotive or dashboard panels, insist on a single Wavelength Bin (HY03-HY06) per batch to avoid customer complaints about "orange-ish" vs. "green-ish" yellows on the same product line.
- Supply Chain: MSL 3 components require dry-packed packaging. 📦 If your supplier ships in non-vacuum bags without desiccant, reject the shipment immediately to avoid SMT yield issues.
❓ FAQ
Q: Can I drive this LED at 25mA for higher brightness?
A: No. The Absolute Maximum Rating for continuous forward current is 20mA. Driving at 25mA will significantly accelerate thermal degradation and shorten the lifespan, potentially causing immediate open-circuit failure at high ambient temperatures.
Q: What is the risk of mixing brightness bins (e.g., D2 and D5) on the same PCB?
A: Visibly uneven illumination. The D5 bin is >2x brighter than the D2 bin. On a user interface with multiple indicators, this will look like a manufacturing defect. Stick to one bin code per production lot for visible consistency.
Q: Does this LED require special handling for ESD?
A: Yes. With a 2000V ESD rating, it is susceptible to damage during manual assembly. Operators must wear grounded wrist straps, and workstations should use ionizers to prevent latent failures leading to "dark LEDs" in the field.
Q: How do I manage the MSL 3 rating during production?
A: Once the vacuum seal is broken, you have 168 hours to mount the components. If production halts, the remaining reels must be baked in a dry oven per J-STD-033B to remove absorbed moisture before the next reflow cycle.
