📌 Product Overview
The XL-234SURC-L is a standard 3mm through-hole LED designed for reliable indication and general-purpose illumination. 💡 It features a red light source with a dominant wavelength of 620–625nm, encapsulated in a white water-clear colloid that enhances visibility while maintaining a diffused appearance. This component is engineered for high energy efficiency and long operating life, making it suitable for continuous DC drive scenarios.
👇 Target applications range from consumer electronics and automotive indicators to urban lighting and medical instrumentation. The design focus here is on signal stability and ease of integration into legacy PCB layouts requiring radial lead components.
🎯 Typical Applications
Based on the 3mm form factor and 110-degree viewing angle, the XL-234SURC-L is optimized for the following scenarios:
- Consumer Electronics: Status indicators for home appliances, digital devices, and electronic clocks.
- Automotive Systems: Dashboard illumination and interior signaling (non-critical).
- Industrial & Education: Electronic teaching equipment and traffic instruction panels requiring wide-angle visibility.
- Decorative Lighting: Urban lighting projects and signage where consistent color rendering is critical.
⚡ Key Technical Specifications
The table below summarizes the initial electrical and optical characteristics (Ta=25℃) necessary for circuit design calculations.
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 50 | 200 | 300 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 615 | 620 | 625 | nm | IF = 20mA |
| Forward Voltage | VF | 1.8 | 2.2 | 2.4 | V | IF = 20mA |
| Viewing Angle | 2Ø1/2 | - | 110 | - | deg | IF = 20mA |
| Peak Wavelength | λp | - | 625 | - | nm | IF = 20mA |
| Reverse Current | IR | - | - | ≤10 | μA | VR = 5V |
📉 Note: Engineers should account for the luminous intensity deviation (±10%) and voltage drop error (±0.1V) when designing driver circuits to ensure uniform brightness across batches.
🚨 Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent device failure or degradation. 👇 These limits are crucial for thermal and stress analysis in harsh environments.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | Pd | 70 | mW | Derate above 25°C ambient |
| Max Forward Current | IF | 20 | mA | Continuous operation |
| Peak Forward Current | IFp | 80 | mA | Pulse width/duty cycle limited |
| Operating Temp. | Topr | -20 ~ +85 | °C | Ambient range |
| Storage Temp. | Tstg | -40 ~ +85 | °C | |
| Soldering (Reflow) | Tsol | 240 | °C | ≤ 6s |
| Soldering (Manual) | Tsol | 300 | °C | ≤ 3s, >3.5mm from body |
⚠️ Critical Warning: The solder joint must be located >3.5mm from the bottom of the colloid to prevent thermal damage during assembly.
📦 Package, Dimensions & Assembly Notes
- Package Type: 3mm Radial Lead (T-1 variant).
- Dimensions: 3.0 x 2.0 x 4.0mm (Body) with a total length of 28mm (Long Lead).
- Tolerance: ±0.50mm unless otherwise specified.
- Packaging: 1000 pieces per moisture-proof and anti-electrostatic bag (EIA Standard).
- Moisture Sensitivity: MSL Level 2.
🔒 Assembly Tip: Ensure wave soldering profiles do not exceed 240°C for more than 6 seconds. The long leads (28mm) facilitate insertion into deeper chassis or specific PCB headers, but verify lead forming stress limits (Load 2.5N) during bending.
🚀 Sourcing & Supply Considerations
When integrating the XL-234SURC-L into BOMs, consider the following supply chain factors:
- Bin Consistency: Verify grading codes (Brightness A1-A3, Voltage N12-7/8/9, Wavelength HR02/03) to match prototype samples during mass production.
- Storage Integrity: As an MSL 2 component, ensure suppliers use nitrogen-sealed or desiccant-dried packaging if storage exceeds 3 months.
- Authenticity: Cross-reference the "Unknown" brand markings and dimensional tolerances to detect counterfeit or off-spec components.
❓ FAQ
Q: What is the forward voltage range for this LED at standard operating current? A: At the typical forward current of 20mA, the forward voltage (VF) ranges from a minimum of 1.8V to a maximum of 2.4V, with a typical value of 2.2V.
Q: How is the brightness graded for this specific model? A: The luminous intensity is sorted into three distinct bins: Code A1 (50-100 mcd), A2 (100-200 mcd), and A3 (200-300 mcd). Selecting the correct bin is essential for visual uniformity.
Q: What are the soldering limits to prevent damage to the LED colloid? A: For manual welding, the temperature must not exceed 300°C for longer than 3 seconds. Crucially, the soldering point must maintain a distance of at least 3.5mm from the bottom of the epoxy body.
Q: Is this component suitable for high-humidity environments? A: Yes, the device is rated for storage and operation in high humidity and has passed 1000-hour high-temperature/high-humidity endurance tests (85°C / 85-90% RH). However, it is classified as Moisture Sensitivity Level (MSL) 2.
Q: What is the typical viewing angle for this indicator? A: The XL-234SURC-L features a wide viewing angle of 110 degrees (2Ø1/2), making it suitable for dashboard indicators or status lights requiring broad visibility.
