📌 Product Overview
The XL-234SURD-L is a standard 3mm radial LED from XINGLIGHT, utilizing a red colloid and water-clear lens to emit a dominant red wavelength (620-625nm). 💡 This component is engineered for through-hole assembly (THT) processes where robust physical mounting and wide viewing angles are required.
Designed for general indication and backlighting, the device balances luminous intensity—ranging from 50mcd to 300mcd—with energy efficiency. 🔒 It is particularly suited for cost-sensitive designs requiring reliable DC drive characteristics and compliance with RoHS environmental standards.
⚙️ Typical Applications
Based on the 110-degree viewing angle and low power consumption (70mW max), the XL-234SURD-L fits the following scenarios:
- Consumer Electronics: Status indicators for home appliances and digital devices.
- Automotive: Interior dashboard lighting and non-critical instrument clusters.
- Industrial & Traffic: Panel indicators and urban lighting decoration.
- Education & Toys: Electronic learning equipment and visual feedback systems.
📊 Key Technical Specifications
The following table outlines the electro-optical characteristics under standard test conditions ($T_a=25^\circ C$). ⚠️ Designers must account for the binning codes (A1-A3, N12-7/8/9) when specifying luminosity and voltage drop to ensure display uniformity.
| Parameter | Symbol | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|---|
| Luminous Intensity | $I_V$ | 50 | 200 | 300 | mcd | $I_F=20mA$ |
| Dominant Wavelength | $\lambda_d$ | 615 | 620 | 625 | nm | $I_F=20mA$ |
| Forward Voltage | $V_F$ | 1.8 | 2.2 | 2.4 | V | $I_F=20mA$ |
| Viewing Angle | $2\theta_{1/2}$ | - | 110 | - | deg | $I_F=20mA$ |
| Reverse Current | $I_R$ | - | - | $\le 10$ | $\mu A$ | $V_R=5V$ |
⚠️ Absolute Maximum Ratings & Process Limits
To ensure yield rates and prevent catastrophic failure during PCB assembly and operation, the following stress limits must not be exceeded. 👇 These ratings are critical for thermal management in compact designs.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | $P_d$ | 70 | mW | Derate above 25°C ambient |
| Max Forward Current | $I_F$ | 20 | mA | Continuous operation |
| Peak Forward Current | $I_{Fp}$ | 80 | mA | Pulse width $\le 10ms$ |
| Operating Temperature | $T_{opr}$ | -20 ~ +85 | $^\circ C$ | Ambient range |
| Storage Temperature | $T_{stg}$ | -40 ~ +85 | $^\circ C$ | Humidity < 70% RH |
| Soldering (Wave) | $T_{sol}$ | 240 | $^\circ C$ | Max 6 seconds |
📦 Package, Dimensions & Assembly Notes
The XL-234SURD-L features a "long leg" radial package with an epoxy bulb size of 3.0mm x 2.0mm and an overall length of 28mm. 🔒 This extended lead length facilitates automated insertion and manual prototyping.
- Dimensions: 3.0 (W) x 2.0 (T) x 4.0 (H) mm.
- Tolerance: $\pm 0.50mm$ unless noted.
- Soldering: Keep the soldering point $> 2.0mm$ from the colloid base to prevent thermal damage.
- Packaging: 1000 pieces per moisture-proof anti-static bag (EIA standard).
🚀 Sourcing & Supply Considerations
For OEM and EMS teams integrating the XL-234SURD-L, consider the following supply chain factors:
- Binning Verification: Confirm specific Brightness (A1-A3) and Voltage (N12) codes to match circuit driver limits.
- Authenticity: Source through authorized channels to ensure MSL (Level 2) compliance and genuine RoHS adherence.
- Lead Time: Standard EIA packaging usually offers better availability than custom tape-and-reel for THT components.
❓ FAQ
Q: What is the typical forward voltage drop for this LED? A: The typical forward voltage ($V_F$) is 2.2V at a current of 20mA, with a maximum of 2.4V. Ensure your driver circuit can supply at least 2.4V to account for tolerance.
Q: Can this LED be used in outdoor environments? A: While the operating temperature ranges from -20°C to +85°C, the storage humidity must not exceed 70%. For outdoor use, ensure the housing provides adequate sealing against moisture ingress.
Q: What is the Moisture Sensitivity Level (MSL)? A: The XL-234SURD-L is classified as MSL 2. This means it can be exposed to a maximum floor life of 1 year at $<30^\circ C$ / 60% RH before baking is required to prevent popcorning during soldering.
Q: How should I handle the long leads during assembly? A: The 28mm length allows for flexibility. However, ensure the wave soldering temperature does not exceed 240°C for more than 6 seconds, and maintain a 2mm distance from the epoxy body to the solder joint to prevent damage.
