📌 Product Overview
The XL-DZT502SURD1 is a classic F5 (5mm diameter) radial LED featuring a red water-clear lens and a red colloid body. Designed as a versatile indicator light, it operates with a low forward voltage and high energy efficiency.
💡 Target applications span consumer electronics, industrial signal devices, and automotive dashboards. The primary design focus lies in its ability to provide stable luminosity with a standard viewing angle, making it ideal for status indication where cost-effectiveness and reliable through-hole assembly are prioritized over miniaturization.
💻 Typical Applications
Based on the device's 11.3x15.0mm profile and moisture resistance (MSL 2), this model serves well in the following scenarios:
- Home Appliances & Digital Devices: Status indicators (Power/Standby) on control panels.
- Automotive Electronics: Dashboard illumination and interior signaling (subject to AEC compliance checks).
- Industrial & Traffic: Simple signal towers and traffic instruction boards.
- Instrumentation: Electronic clocks and medical beauty equipment requiring clear visual feedback.
📊 Key Technical Specifications
The electrical performance under standard test conditions (Ta=25°C) is summarized below:
| Parameter | Symbol | Min | Typ. | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 300 | - | 900 | mcd | IF = 20 mA |
| Dominant Wavelength | λd | 615 | - | 635 | nm | IF = 20 mA |
| Forward Voltage | VF | 1.8 | 2.2 | 2.4 | V | IF = 20 mA |
| Peak Wavelength | λp | - | 625 | - | nm | IF = 20 mA |
| Viewing Angle | 2θ1/2 | - | - | 35 | deg | IF = 20 mA |
| Reverse Current | IR | - | - | ≤ 5 | μA | VR = 5 V |
Note: A brightness grading code (e.g., A4/A5) is likely applied during binning to sort intensity variance.
⚠️ Absolute Maximum Ratings & Process Limits
To ensure reliability and prevent thermal runaway, designs must strictly adhere to these limits:
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Max Power Dissipation | Pd | 50 | mW | Derate above 25°C ambient |
| Max Continuous Forward Current | IF | 20 | mA | DC operation |
| Peak Forward Current | IFp | 80 | mA | Pulse width ≤ 10ms, 1/10 duty |
| Operating Temperature | Topr | -40 ~ +85 | °C | Ambient range |
| Storage Temperature | Tstg | -40 ~ +85 | °C | Non-operating |
| Reverse Voltage | VR | 5 | V | Maximum allowable |
💡 Engineers should calculate the current-limiting resistor using the max Forward Voltage (2.4V) to ensure current stays under 20mA at the supply rail's peak voltage.
🔧 Package, Dimensions & Assembly Notes
- Package Type: F5 Round, 2-pin Through-Hole.
- Dimensions: Body diameter 5mm. Total footprint approx 11.3 (W) x 15.0 (H) x 10.3 (T) mm.
- Soldering Guidelines:
- 🔒 Wave Soldering: Max 240°C for ≤ 6 seconds.
- 🔒 Manual Welding: Max 300°C for ≤ 3 seconds.
- Lead spacing: Ensure the welding point is >2.0mm from the colloid base to prevent thermal damage to the epoxy lens.
- Moisture Sensitivity: MSL Level 2. Floor life < 1 year at <30°C/60% RH. Bake before reflow if exposed beyond limit.
📦 Sourcing & Supply Considerations
- Supply Chain: This is a standard commodity part; verify lead times for high-volume runs (consumer electronics seasonality).
- Authenticity: Source from authorized distributors to avoid counterfeits with unstable forward voltage.
- Binning: Request specific intensity bins (e.g., A4/A5) if uniform brightness across a panel is critical.
- Samples: Request engineering samples to validate viewing angle and color saturation in the specific end-use environment.
❓ FAQ
Q: What is the recommended resistor value for a 5V supply?
A: Using the worst-case Forward Voltage (2.4V) and desired current (20mA), R = (5V - 2.4V) / 0.02A = 130Ω. A standard 120Ω or 150Ω resistor is suitable.
Q: Is this LED suitable for outdoor street lighting?
A: While the datasheet mentions "Urban lighting," this F5 indicator is designed for status indicators, not general illumination. It lacks the luminous flux (lumens) required for street lighting but is suitable for traffic instruction signs or control boxes.
Q: Can I solder this using a reflow oven?
A: No, this is a through-hole component (THT). It is designed for wave soldering or manual hand soldering. Do not expose to standard SMT reflow profiles (peak ~260°C) as the epoxy may deform.
Q: What does the viewing angle of 35 degrees mean?
A: The light output is focused into a cone. At 35 degrees, the intensity drops to 50% of the peak value. This is a medium-narrow beam, good for panel indicators viewed from the front.
Q: How long is the storage life if the bag is left open?
A: As an MSL 2 component, it has a floor life of 1 year (≤30°C / 85% RH). If exposed for longer, a bake (125°C for 24 hours) is recommended before soldering to prevent "popcorning" or delamination.
