📌 Product Overview
The XL-B524SURSYGC is a standard 5mm through-hole bi-color indicator featuring independent Red and Yellow-Green chips in a water-clear transparent lens. 💡 Designed for common anode circuitry, it offers a space-efficient solution for dual-status indication without requiring separate component footprints.
Targeted primarily at industrial control panels, automotive interior lighting, and consumer appliance status displays, this component emphasizes visual clarity and power efficiency. ✨ Its robust F5 package design ensures compliance with RoHS standards while maintaining high luminous intensity for low-power DC drive applications.
🔧 Typical Applications
Based on the 5mm form factor and optical characteristics, the XL-B524SURSYGC is suited for the following scenarios:
- Industrial Human-Machine Interfaces (HMI): Status indicators for switches, relays, and control panels where Red (Stop/Error) and Green (Run/OK) states are required in a single location.
- Automotive Interior Lighting: Dashboard illumination and center console indicators, leveraging the component's operating temperature range up to 85°C.
- Household Appliances: Visual feedback for washing machines, microwaves, and HVAC systems.
- Smart Home Devices: Status LEDs for hubs, sensors, and IoT gateways requiring clear, dual-color visibility.
📊 Key Technical Specifications
The following electro-optical parameters are critical for circuit design and visual consistency (Ta=25°C).
| Parameter | Symbol | Red (R) | Yellow-Green (YG) | Conditions |
|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 400 - 700 mcd | 100 - 300 mcd | $I_F = 20\text{mA}$ |
| Dominant Wavelength | $\lambda_d$ | 630 - 640 nm | 565 - 575 nm | $I_F = 20\text{mA}$ |
| Forward Voltage | $V_F$ | 1.8 - 2.4 V | 1.8 - 2.6 V | $I_F = 20\text{mA}$ |
| Viewing Angle | $2\theta_{1/2}$ | \multicolumn{2}{c | }{30°} | $I_F = 20\text{mA}$ |
| Reverse Current | $I_R$ | $\le 10 \mu A$ | $\le 10 \mu A$ | $V_R = 5\text{V}$ |
⚠️ Note: To ensure uniform brightness across batches, designers should specify luminous intensity bin codes (e.g., A5, A6) and voltage bins (e.g., N12-7) during the procurement phase.
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent device failure or degradation. These limits are critical for reliability testing and design margin.
| Parameter | Symbol | Red (R) | Yellow-Green (YG) | Unit |
|---|---|---|---|---|
| Max Power Dissipation | $P_D$ | 50 | 70 | mW |
| Max Continuous Forward Current | $I_F$ | 20 | 20 | mA |
| Peak Forward Current | $I_{FP}$ | 80 | 80 | mA |
| Operating Temperature | $T_{OPR}$ | \multicolumn{2}{c | }{-20 to +85} | °C |
| Storage Temperature | $T_{STR}$ | \multicolumn{2}{c | }{-40 to +85} | °C |
Soldering Limits:
🔒 Wave Soldering: Max 240°C for ≤6 seconds.
🔒 Manual Soldering: Max 300°C for ≤3 seconds.
Crucial: Keep the soldering point at least 2.0mm away from the colloid base to prevent epoxy damage.
📐 Package, Dimensions & Assembly Notes
- Package Type: F5 Round (3mm Bi-Color Diffused).
- Dimensions: The overall length is approximately 28mm with a bulb diameter of 5mm.
- Lens Material: Water-clear transparent epoxy, optimized for high light transmission and diffused output.
Assembly Considerations:
💡 Ensure the PCB lead pitch matches the 2.54mm standard spacing to facilitate automated insertion. Due to the Moisture Sensitivity Level (MSL) of 2, the components should be used within 1 year of opening the sealed bag, or baked according to IPC/JEDEC J-STD-033 standards if floor life exceeds limits.
📦 Sourcing & Supply Considerations
- Binning Consistency: For high-volume consumer goods, strict adherence to voltage and luminosity bin codes is recommended to avoid perceptible differences in indicator brightness or color mix.
- Authenticity: Source components exclusively through XINGLIGHT authorized channels to avoid counterfeits that may not meet the defined optical or safety standards.
- Sample Evaluation: Request pre-production samples with specific bin codes to validate the color mix and intensity in your specific ambient light environment before full tooling release.
❓ Frequently Asked Questions
Q: What is the difference between Dominant Wavelength and Peak Wavelength for this LED?
A: Dominant wavelength ($\lambda_d$) refers to the color perceived by the human eye (630-640nm for Red), while Peak Wavelength ($\lambda_p$) is the actual maximum emission point on the spectral curve. Designers should prioritize Dominant Wavelength when matching specific color requirements.
Q: Can the Red and Green chips be lit simultaneously?
A: Yes, but technically this creates a third color (usually yellow/orange depending on intensity ratios). However, the XL-B524SURSYGC is specified as a Common Anode device, so current limiting resistors must be calculated individually for each cathode to control the mixed color precisely and avoid exceeding the max current rating.
Q: What does MSL 2 mean for my production line?
A: MSL 2 (Moisture Sensitivity Level) means the components can be exposed to a factory floor life of up to 1 year at 30°C/60% RH before soldering. If the components are stored longer or in different conditions, they require baking (pre-conditioning) to prevent popcorning or internal cracking during soldering.
Q: How do I select the correct resistor for the 20mA drive current?
A: Use Ohm's Law: $R = (V_{source} - V_F) / I_F$. For example, with a 5V supply and a Red LED ($V_F$ approx 2.0V), $R = (5 - 2.0) / 0.02 = 150\Omega$. Always verify the specific $V_F$ bin code of your batch for precision.
Q: Is this component suitable for outdoor use?
A: While the storage temperature ranges are wide, the water-clear epoxy lens is generally designed for indoor or enclosed automotive applications. For direct outdoor exposure (UV/sunlight/moisture), additional sealing or UV-resistant materials should be considered to prevent long-term lens yellowing.
