XL-504UGD
XINGLIGHT
Needs validationhigh risk
Green 5mm LED with matching lens type and viewing angle, but requires resistor change for different forward voltage and is much brighter.
Best Alternatives to XL-502SYGD
XL-502SYGD is a standard 5mm T-1 3/4 green diffused LED. While no direct drop-in replacements have been identified, several functional alternatives exist that offer similar form factors but require circuit adjustments.
AI replacement insight
Electrical riskhigh
Forward voltage mismatch requires resistor change to maintain correct current and brightness.
Package risklow
The 5mm T-1 3/4 package is standard and alternatives are form-compatible.
Sourcing riskmedium
Multiple functional alternatives exist but require careful validation before procurement.
Can it be replaced directly?
No direct, drop-in replacement for XL-502SYGD has been confirmed. All known alternatives require circuit modification due to different forward voltages.
Best replacement path
Functional alternatives like NFD5408UGD require engineering review and circuit modification.
Main risk
The primary risk is electrical mismatch, specifically the forward voltage, which necessitates recalculating and replacing the series current-limiting resistor.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | XL-502SYGD | XL-504UGD | NFD5408UGD | XL-502UGC | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 5mm (T-1 3/4) | 5mm (F5) | 5mm | 5mm (F5) | 5mm (F5) — Form factor is compatible.; NFD5408UGD: Form factor is compatible.; XL-502UGC: Form factor is compatible. |
| Voltage | 2.2V | 3.0V | 2.8V | 3.0V | 3.0V / 2.8V — Higher forward voltage requires resistor change.; NFD5408UGD: Higher forward voltage requires resistor change.; XL-502UGC: Higher forward voltage requires resistor change. |
| Luminous Intensity | 50-200 mcd | 6000 mcd | 3000-9000 mcd | 30000 mcd | 6000 mcd / 3000-9000 mcd / 30000 mcd — Significantly brighter.; NFD5408UGD: Significantly brighter.; XL-502UGC: Significantly brighter, may not be suitable for all applications. |
| Viewing Angle | 30° | 30° | 20° | - | 30° / 20° — Viewing angle matches.; NFD5408UGD: Narrower viewing angle. |
| Lens Color | Green Diffused | - | - | White Diffused | White Diffused — Different unlit appearance. |
| Color Wavelength | 562-575 nm | - | - | 520 nm | 520 nm — Different shade of green (more pure green). |
Application & sourcing insights
Questions & answers
No direct drop-in is available. Candidates like NFD5408UGD or XL-504UGD are green 5mm LEDs but have different forward voltages and are much brighter, requiring a review of the driving circuit resistor.