📌 Product Overview
The XL-234UYD-L is a standard 3mm through-hole LED manufactured by XINGLIGHT, featuring a yellow water-clear lens and long lead plating for wave soldering applications. 💡 Designed as a general-purpose indicator, it utilizes InGaAlP/GaP technology to emit light at a dominant wavelength of 590nm (Yellow), suitable for status lights and dashboard illumination.
This component is engineered for environments requiring high visibility and low power consumption. With a viewing angle of 110 degrees, it provides wide visibility for industrial panels and consumer electronics. The device is fully RoHS compliant and features an EIA-standard package layout, making it a viable drop-in replacement for standard 3mm yellow lamp indicators in legacy and new designs.
🚀 Typical Applications
Based on the forward voltage (1.8V–2.4V) and robust operating temperature range (-20°C to +85°C), the XL-234UYD-L is optimized for the following scenarios:
- Industrial & Automotive Indicators: Dashboard lights, signal indicators, and automotive interior illumination.
- Consumer Electronics: Status lights for home appliances, digital clocks, and electronic toys.
- Communication & Traffic: 📡 Signal transmission status lights and basic traffic instruction equipment.
- Medical & Educational: 🏥 Indicator panels for medical beauty instruments and electronic teaching devices.
- Urban Lighting: Decorative lighting arrays requiring long operating life and DC drive efficiency.
📊 Key Technical Specifications
The following electro-optical parameters are measured under standard test conditions (Ta=25°C, IF=20mA). Designers should pay close attention to the Luminous Intensity (Iv) and Forward Voltage (VF) binning codes to ensure batch consistency.
| Parameter | Symbol | Min | Typ. | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 50 | 200 | 300 | mcd | IF = 20mA |
| Dominant Wavelength | λd | 585 | — | 595 | nm | IF = 20mA |
| Peak Wavelength | λp | — | 590 | — | nm | IF = 20mA |
| Forward Voltage | VF | 1.8 | 2.2 | 2.4 | V | IF = 20mA |
| Viewing Angle | 2Ø1/2 | — | 110 | — | deg | IF = 20mA |
| Spectral Width | △λ | — | 20 | — | nm | IF = 20mA |
| Reverse Current | IR | — | — | ≤10 | μA | VR = 5V |
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause device failure or permanent performance degradation. ⚡ These limits are critical for designing the driver circuit and establishing thermal margins.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | Pd | 70 | mW | Total power consumption limit |
| 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 for light output |
| Storage Temperature | Tstg | -40 ~ +85 | °C | Non-operating storage range |
| Soldering (Wave) | Tsol | 240 | °C | Max 6 seconds duration |
| Soldering (Manual) | Tsol | 300 | °C | Max 3 seconds duration |
Note: Welding point must be > 2.0mm from the colloid bottom to prevent thermal damage.
📦 Package, Dimensions & Assembly Notes
- Package Type: 3mm Round Radial Lead (Long Legs).
- Dimensions: 3.0 (Diameter) x 2.0 (Base) x 4.0 (Height) x 28mm (Lead Length).
- Tolerance: ±0.50mm unless otherwise specified.
- Moisture Sensitivity: 🌧️ MSL Level 2 (Devices must be soldered within 1 year of opening the moisture-proof bag).
- Packaging: 1000 pieces per anti-electrostatic foil bag.
Assembly requires careful attention to lead forming. The datasheet specifies a Lead Integrity test load of 2.5N (0.25kgf), ensuring the leads can withstand standard insertion and wave soldering processes without mechanical fatigue.
📈 Sourcing & Supply Considerations
- Binning Codes: When procuring, specify Brightness (A1-A3), Voltage (N12-7 to N12-9), and Wavelength (HY03-HY06) codes to ensure color and voltage uniformity across the production lot.
- Authenticity: Verify packaging includes the XINGLIGHT branding and moisture-proof barrier bags to avoid MSL compliance issues.
- Lead Time: As a standard LED category, lead times are generally stable, but confirm stock availability for specific binning requirements.
❓ FAQ
Q: What is the recommended current limiting resistor for a 5V supply? A: For a typical forward voltage of 2.2V and a forward current of 20mA: $R = (5V - 2.2V) / 0.02A = 140\Omega$. A 150Ω resistor is a standard safe value.
Q: Can this LED be used in outdoor environments? A: The XL-234UYD-L is designed for indoor indicators. If used outdoors, it must be housed in an IP-rated enclosure that protects it from direct water exposure and UV degradation, as the operating temperature range is limited to +85°C.
Q: What does "MSL Level 2" mean for my assembly process? A: It means the components are sensitive to moisture. After opening the sealed bag, they must be soldered within 1 year (per floor life standards). If the floor life is exceeded, a baking process is required before reflow soldering to prevent "popcorning" damage.
Q: Are the long leads suitable for automated PCB insertion? A: Yes, the 28mm lead length and EIA standard packaging are designed for compatibility with automatic insertion machines and radial leaders.
Q: How is the brightness sorted? A: Brightness is sorted into codes A1 (50-100mcd), A2 (100-200mcd), and A3 (200-300mcd). Selecting a specific code ensures uniform brightness across a panel of indicators.
