2. Article Body
📌 Product Overview
The XL-234UBC-L from XINGLIGHT is a standard 3mm radial leaded LED emitting blue light with a water-clear colloid. 💡 It is engineered to provide a balance of luminous intensity and power efficiency for general indication purposes.
This component is ideally suited for PCB designs requiring long-legged through-hole assembly (THT). Its robust construction supports automated insertion processes while maintaining consistent optical performance in consumer electronics and industrial control panels.
🚀 Typical Applications
Based on the 460nm dominant wavelength and 20mA drive current, the XL-234UBC-L fits the following scenarios:
- Status & Power Indication: 📉 Ideal for dashboard lights, power buttons, and signal indicators in home appliances (white goods) and digital communication devices.
- Automotive Electronics: Suitable for interior dashboard illumination and non-critical control panel lights (check specific automotive grade requirements).
- Consumer Devices: Used in electronic toys, educational equipment, and digital clocks for visual feedback.
- Decorative Lighting: 💡 Applicable for urban lighting accents and low-cost decorative light strings due to its wide 110-degree viewing angle.
📊 Key Technical Specifications
The following table outlines the initial electro-optical characteristics (Ta=25℃). Designers should pay close attention to the Luminous Intensity (Iv) and Forward Voltage (VF) variances when calculating driver circuit resistance.
| Parameter | Symbol | Min | Typ. | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 100 | 200 | 400 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 455 | 460 | 465 | nm | IF = 20mA |
| Peak Wavelength | λp | - | 465 | - | nm | 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 |
Note: ⚠️ Light intensity deviation is ±10%, and forward voltage deviation is ±0.1V.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent device failure or degradation. These limits are critical for reliability testing and harsh environment design.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | Pd | 70 | mW | |
| Max Continuous Forward Current | IF | 20 | mA | |
| Peak Forward Current | IFp | 80 | mA | Pulse width/duty cycle limits apply |
| Operating Temperature | Topr | -20 ~ +85 | °C | |
| Storage Temperature | Tstg | -40 ~ +85 | °C | |
| Soldering (Wave) | Tsol | 240 | °C | ≤ 6s |
| Soldering (Manual) | Tsol | 300 | °C | ≤ 3s |
Warning: 🔒 The soldering point must be >2.0mm from the colloid bottom to prevent thermal damage to the epoxy.
📦 Package, Dimensions & Assembly Notes
- Package Type: 3mm Round Radial (THT).
- Dimensions: Appearance size is 3.0 * 2.0 * 4.0 * 28mm (Diameter * Width * Height * Length).
- Tolerances: Unless specified, tolerances are ±0.50mm.
- MSL Level: 2 (Moisture Sensitivity Level). 🌧️ Ensure proper baking if exposed to ambient humidity for extended periods before reflow.
- Packaging: 1000PCS per bag, using moisture-proof and anti-electrostatic foil bags.
📈 Sourcing & Supply Considerations
When integrating the XL-234UBC-L into a BOM, consider the following supply chain factors:
- Bin Code Verification: 🛠️ Confirm specific Brightness (A2-A4), Voltage (N13-3 to N13-5), and Wavelength (HB03-HB05) codes with the supplier to ensure batch consistency.
- Authenticity: Source from authorized channels to guarantee ROHS compliance and avoid counterfeits that may not meet the "Long operating life" spec.
- Sample Testing: Always validate samples from the specific lot date code if using in high-reliability medical or automotive instruments.
❓ FAQ
Q: What is the typical forward voltage drop for this LED? A: The typical forward voltage (VF) is 3.0V at a test current of 20mA. However, it can range from 2.8V to 3.4V depending on the bin code and temperature.
Q: Can this LED be used for outdoor lighting? A: While it has applications in "Urban lighting," the operating temperature limit is -20°C to +85°C. For extreme outdoor environments, additional thermal management or weatherproofing enclosures are required.
Q: What does the "A2" or "A4" brightness grading mean? A: These codes specify the Luminous Intensity (Iv) range. "A2" covers 100-200 mcd, while "A4" covers 300-400 mcd. Selecting the correct bin ensures visual uniformity across your product's panel.
Q: How close to the LED body can I solder? A: ⚠️ You must maintain a distance of at least 2.0mm between the soldering joint and the bottom of the LED colloid to prevent heat damage during assembly.
Q: Is this component ROHS compliant? A: Yes, the datasheet explicitly states that the XL-234UBC-L is an environmental protection product meeting ROHS requirements.
Q: What is the MSL rating for storage? A: The Moisture Sensitivity Level (MSL) is 2. This means it can be exposed to ambient air (≤30°C / 85% RH) for up to one year before baking is required for mounting.
