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XL-502SYGD F5 LED: Thermal & Forward Voltage Binning Analysis

The XINGLIGHT XL-502SYGD is a standard F5 (5mm) through-hole green LED designed for general indication and status lighting. This analysis targets engineering and procurement teams requiring stable luminous intensity c...

XL-502SYGD F5 LED: Thermal & Forward Voltage Binning Analysis

📌 Product Overview

The XINGLIGHT XL-502SYGD is a standard F5 radial-lead LED featuring a Green colloid and a dominant wavelength of approximately 570nm. 💡 Designed for general-purpose indication, this component utilizes a diffused lens to provide a wide viewing angle of 30 degrees, ensuring visibility in standard panel mount and PCB assemblies.

Target applications primarily include household appliances, digital communication devices, and electronic toys where long operating life and high energy efficiency are required. The component is engineered for low-voltage DC drive systems, offering a balance between luminous intensity (ranging from 50 to 200 mcd) and power consumption.

💼 Typical Applications

Based on the F5 package size and 20mA drive current, this model is optimized for the following scenarios:

  • Status Indication: Power on/off lights for home appliances and office equipment.
  • Consumer Electronics: Indicator lights for digital devices and electronic clocks.
  • Automotive Interior: Dashboard lighting and control panel indicators (non-critical).
  • Industrial Signage: Traffic instructions and urban lighting embellishments requiring standard green emission.
  • Education & Toys: Electronic teaching equipment and electronic toy feedback mechanisms.

⚡ Key Technical Specifications

The following electrical and optical characteristics are measured at an ambient temperature of 25℃ (Ta=25℃).

ParameterSymbolMinTyp.MaxUnitTest Conditions
Luminous IntensityIv50-200mcdIF = 20mA
Dominant Wavelengthλd562-575nmIF = 20mA
Peak Wavelengthλp-570-nmIF = 20mA
Forward VoltageVF2.02.22.6VIF = 20mA
Viewing Angle2Ø1/2-30-degIF = 20mA
Reverse CurrentIR--≤10μAVR = 5V

Note: Design engineers should account for a light intensity deviation of ±10% and a forward voltage deviation of ±0.1V during circuit design.

🚨 Absolute Maximum Ratings & Process Limits

Exceeding these ratings may cause permanent device failure or degradation. These limits define the stress boundaries for the XL-502SYGD during assembly and operation.

ParameterSymbolRatingUnitNotes
Power DissipationPd70mWTotal power consumption limit.
Max Continuous Forward CurrentIF20mAStandard operating current.
Peak Forward CurrentIFp80mAPulse width/duty cycle restrictions apply.
Operating TemperatureTopr-20 to +85°CAmbient operating range.
Storage TemperatureTstg-40 to +85°CNon-operating storage range.
Soldering (Wave/Reflow)Tsol240°CMax 6 seconds; Manual welding max 300°C for 3s.

⚠️ Critical Warning: Soldering points must be located at least 2.0mm from the bottom of the colloid to prevent thermal damage to the epoxy resin.

📦 Package, Dimensions & Assembly Notes

The XL-502SYGD is housed in a standard F5 package (5.0mm diameter) with a short-lead configuration.

  • Dimensions: The overall length is approximately 18mm, with a diameter of 5.5mm. Tolerances are generally ±0.50mm unless specified.
  • Assembly: The component is designed for Through-Hole Technology (THT) insertion.
  • Moisture Sensitivity: The MSL (Moisture Sensitivity Level) is rated at Level 2.
  • Packaging: EIA standard compliance, typically supplied in moisture-proof and anti-electrostatic foil bags or bulk packaging to ensure safe transport and storage.

🏷️ Sourcing & Supply Considerations

When integrating the XL-502SYGD into BOMs, procurement teams should consider the following:

  • 📉 Binning Consistency: Verify brightness (A1/A2) and voltage (N12-8/9, N13-1) bin codes to ensure uniform visual appearance across production batches.
  • 🔒 Compliance: The product is ROHS compliant, meeting standard environmental requirements for electronic waste.
  • 🚀 Lead Time & Alternatives: As a standard F5 package type, this model typically offers stable supply, but verifying stock for specific wavelength bins (HYG02-06) is recommended for volume orders.
  • Authentication: Source through XINGLIGHT authorized channels to avoid counterfeits, specifically verifying the green colloid and F5 dimensional markings.

❓ FAQ

Q: What is the recommended storage environment for the XL-502SYGD to prevent moisture damage?
A: The storage environment temperature should not exceed 30℃, with relative humidity not exceeding 70%. It is recommended to use the LEDs within three months of the original packaging date. For longer storage, a dry cabinet with desiccant or nitrogen storage is required to maintain MSL 2 integrity.

Q: Can this LED be used in outdoor or high-humidity applications?
A: While the LED has a robust operating temperature range (-20°C to +85°C) and passes high-humidity endurance tests, it is primarily designed for indoor indication (IP40 equivalent equivalent). For outdoor traffic lighting or urban beautification, additional waterproofing enclosures are necessary to protect the leads and epoxy body from direct water ingress.

Q: What is the difference between the Dominant Wavelength and Peak Wavelength?
A: For this model, the Peak Wavelength (λp) is typically 570nm (the physical emission peak). The Dominant Wavelength (λd) ranges from 562-575nm, which describes the perceived color by the human eye relative to the green spectrum. Selecting specific λd bins ensures color consistency across panels.

Q: How strict is the Forward Voltage (Vf) requirement for my circuit design?
A: The Vf ranges from 2.0V to 2.6V. Your driving circuit must accommodate this variance. If driving multiple LEDs in parallel, balancing resistors are crucial to prevent current hogging, especially if mixing bins with different Vf grades (e.g., N12-8 vs N13-1).

Q: Are the lead lengths suitable for automated PCB assembly?
A: The datasheet specifies "Short Legs" (短脚), which often indicates a format ready for insertion or light trimming. However, the total length is 18mm. Verify the clinching and cutting parameters of your automated inserters to ensure the 2.0mm standoff distance from the colloid bottom is maintained during soldering.

About Leon Zhang

Leon Zhang is the founder of LDeepAI, focusing on AI-assisted electronic component sourcing and verified China supply-chain support for overseas buyers. He previously worked within the Huaqiang Group ecosystem, including experience related to HQEW, one of China's well-known electronic component trading platforms. This background gives him practical insight into China's electronic component supply-chain structure, supplier screening, channel verification and cross-border sourcing workflows.

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