2. Article Body
📌 Product Overview
The XINGLIGHT XL-257UWC-L is a 3mm through-hole LED designed for high-brightness indication in 10,000K cool white. 💡 It features a water-clear colloid and standard long leads, engineered for applications requiring high luminous intensity within a compact 5.0mm diameter footprint. This component targets general electronic designs where long operating life and low-voltage DC drive are essential.
🚀 Typical Applications
- Indicator & Backlighting: 🔆 Utilization in home appliances, digital communication devices, and electronic clocks for status indication.
- Automotive & Decor: 🚗 Integration into automotive electronics and urban lighting decoration, leveraging high energy efficiency.
- Specialty Equipment: 🏥 Implementation in medical beauty instruments and electronic teaching equipment requiring reliable cool white illumination.
📊 Key Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 1500 | 2000 | 2500 | mcd | IF = 20mA |
| Color Temperature | TC | - | 10000 | - | K | IF = 20mA |
| Forward Voltage | VF | 2.8 | 3.0 | 3.4 | V | IF = 20mA |
| Viewing Angle | 2Ø1/2 | - | 110 | - | deg | IF = 20mA |
| Reverse Current | IR | - | - | ≤10 | μA | VR = 5V |
| CIE 1931 Coordinates | x/y | - | 0.275 / 0.273 | - | - | IF = 20mA |
⚠️ Absolute Maximum Ratings & Process Limits
🔒 Exceeding these ratings may cause device failure. Design engineers must ensure strict adherence to these thermal and electrical boundaries during PCB layout and driver circuit design.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | Pd | 70 | mW | @ Ta = 25°C |
| Max Continuous Forward Current | IF | 20 | mA | Derate above 25°C ambient |
| Peak Forward Current | IFp | 80 | mA | Pulse width ≤ 10ms, duty ≤ 1/10 |
| Operating Temperature | Topr | -20 ~ +85 | °C | Ambient range |
| Storage Temperature | Tstg | -40 ~ +85 | °C | Non-operating range |
| Soldering (Wave) | Tsol | 240 | °C | Max ≤ 6 seconds |
| Soldering (Manual) | Tsol | 300 | °C | Max 3 seconds |
📦 Package, Dimensions & Assembly Notes
- Package Type: 3mm Radial Lead (T-1 size), Water Clear Colloid.
- Dimensions: 🔧 Diameter 5.0mm; Height 7.0mm; Lead Length 28mm. Tolerances are ±0.50mm unless noted.
- Assembly Guidelines: 💡 Soldering points must be >2.0mm from the colloid bottom to prevent thermal damage.
- MSL: Moisture Sensitivity Level is 2. Components must be used within 3 months of opening moisture-proof packaging.
🏗️ Sourcing & Supply Considerations
- Binning Codes: 📈 Verify Brightness (B1-B3) and Voltage (N13-3 to N13-5) codes to match circuit driver tolerances.
- Authenticity: 🔒 Source from authorized channels to ensure ROHS compliance and avoid counterfeits.
- Lead Time: 🚀 Confirm stock availability for high-volume orders to prevent production line stoppages.
❓ Frequently Asked Questions
Q: What is the typical forward voltage for the XL-257UWC-L?
A: The typical forward voltage is 3.0V at a forward current of 20mA, with a maximum of 3.4V.
Q: What is the viewing angle of this LED?
A: The XL-257UWC-L features a wide viewing angle of 110 degrees, suitable for dashboard and panel indicators.
Q: Can this LED be used for wave soldering?
A: Yes, it withstands wave soldering up to 240°C for ≤6 seconds. Ensure the solder joint is >2.0mm from the epoxy base.
Q: What are the storage requirements?
A: Store at temperatures between -40°C and +85°C. The MSL is 2, so use within 3 months if the moisture-proof bag is opened.
Q: What does the "water colloid" description mean?
A: It refers to the water-clear transparent epoxy package that diffuses the 10,000K cool white light efficiently.
Q: How is luminous intensity binned?
A: Intensity is sorted into codes B1 (1500-1800mcd), B2 (1800-2100mcd), and B3 (2100-2500mcd) at 20mA.
