📌 Product Overview
The XL-3528WWC is a 3.5x2.8mm warm white SMD LED manufactured by XINGLIGHT. 💡 Designed for indoor lighting applications, this component emits a warm white light with a correlated color temperature (CCT) range of 2800K to 3400K. Housed in a compact surface-mount package with a water-clear lens, it is suitable for automated SMT assembly and infrared reflow soldering processes.
🚀 Typical Applications
This warm white LED is widely used in various commercial and residential lighting scenarios. 📈 Key application scenarios include:
- Indoor Lighting: Rigid light strips, tube lighting replacements, and downlights requiring warm color tones.
- Backlighting: LCD indicator lights, switch illumination, and panel backlights.
- Decorative Lighting: Ambient lighting strips and accent lighting where a warm atmosphere is desired.
- Commercial Signage: Light boxes and advertising signs requiring uniform warm white illumination.
⚙️ Key Technical Specifications
The following table outlines the optoelectrical performance under standard test conditions (Ta=25°C). 👇 Designers should pay close attention to the Luminous Flux and Forward Voltage to ensure driver compatibility.
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Flux | Φv | 3 | - | 8 | LM | IF = 20 mA |
| CCT (Color Temperature) | CCT | 2800 | - | 3400 | K | IF = 20 mA |
| Forward Voltage | VF | 2.8 | - | 3.4 | V | IF = 20 mA |
| Viewing Angle | 2Ø1/2 | - | 120 | - | deg | IF = 20 mA |
| Reverse Current | IR | - | - | ≤ 10 | μA | VR = 5 V |
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these values may cause permanent damage to the device. 🔒 To ensure reliability, strict adherence to the electrical and thermal stress limits below is mandatory during circuit design and operation.
| Parameter | Symbol | Max. Value | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | PD | 70 | mW | - |
| Max Continuous Forward Current | IF | 20 | mA | - |
| Peak Forward Current | IFP | 60 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| Max Reverse Voltage | VR | 5 | V | - |
| ESD Ability | ESD | 2000 | V | Antistatic ability |
| Operating Temperature | TOPR | -40 ~ +85 | °C | - |
| Storage Temperature | TSTR | -40 ~ +85 | °C | - |
| Soldering Temp/Time | TSOL | 260 | °C | ≤ 6 Seconds |
📦 Package, Dimensions & Assembly Notes
The XL-3528WWC features an outline dimension of 3.5x2.8x1.8mm (LxWxH), making it compatible with standard 3528 footprint designs. ✨ It utilizes EIA standard packaging and is fully compatible with SMT automatic production and infrared reflow soldering.
Soldering Guidelines:
- Lead-Free Process: Max temp 255°C (+0/-5°C) for 5-10s.
- With Lead Process: Max temp 235°C (+5/-0°C) for 10-15s.
- Cooling Rate: Max 6°C/second to prevent thermal shock.
- Moisture Sensitivity: MSL Level 3.
- Soldering Compatibility: Suitable for both Reflow Soldering and manual soldering processes.
💡 The EIA standard packaging ensures compatibility with automated pick-and-place machines. 👇 For reflow profiles, the lead-free process peak temperature should not exceed 255°C (max 6°C/sec cooling rate).
🚀 Sourcing & Supply Considerations
- Binning Verification: Always specify brightness and voltage bins (e.g., H4/N13-4) to ensure uniformity in the final product.
- MSL Handling: As a Level 3 moisture-sensitive device, verify proper dry packaging upon receipt to prevent popcorning during soldering.
- Cross-Reference: Confirm footprint compatibility if substituting for other 3528 series LEDs.
❓ FAQ
Q: What is the forward voltage range for this LED at 20mA?
A: The forward voltage (VF) ranges from a minimum of 2.8V to a maximum of 3.4V when driven at 20mA.
Q: Can this LED be used in outdoor environments?
A: The datasheet specifies "Indoor Lighting" applications. While the operating temperature range is -40°C to +85°C, IP rating and waterproofing depend on the final housing design.
Q: What are the soldering limits for manual assembly?
A: For manual soldering, do not exceed 260°C for more than 6 seconds to prevent damage to the internal phosphor and bond wires.
Q: How is the brightness sorted?
A: Luminous flux is sorted into codes H2 (3-4 LM), H3 (4-5 LM), H4 (5-6 LM), and H5 (6-8 LM) under 20mA test conditions.
Q: What does "Warm White" refer to in this datasheet?
A: It refers to the correlated color temperature (CCT) range of 2800K to 3400K, which provides a yellowish-white light tone.
