Is there a pin-compatible replacement for XL-504UYC?

Yes, several parts like XL-504UYD and XL-502UBC share the same 2-pin, 5mm (F5) through-hole package. However, you must verify key electrical and optical parameters like forward voltage, color, and brightness before substitution.

What risks should I check before replacing XL-504UYC?

When replacing XL-504UYC, check for differences in: 1. Forward Voltage (Vf), which may require changing the series resistor. 2. Luminous Intensity (brightness). 3. Color and lens type, which affect visual output and appearance.

XL-504UYC Alternatives, Datasheet & Cross Reference | XINGLIGHT

XINGLIGHT XL-504UYC is a standard 5mm (F5) yellow LED. While no exact drop-in replacement is identified, several alternatives from the same XINGLIGHT family offer the same package with variations in color, brightness, and forward voltage that may suit different application needs after review.

AI replacement insight

Electrical riskmedium

Some alternatives have a different forward voltage (e.g., 3.0V vs 2.0V), requiring a series resistor change.

Package risklow

All candidates share the same 5mm through-hole package, ensuring physical compatibility.

Performance riskhigh

Significant variations in color, luminous intensity, and lens type exist across candidates, impacting visual output.

Can it be replaced directly?

No direct, 1-to-1 drop-in replacement has been identified. The closest alternatives have significant differences in brightness or color.

Best replacement path

XL-504UYD is the closest option, matching color and voltage, but requires accepting lower brightness and a different lens color.

Main risk

The primary risk is a mismatch in optical performance (brightness, color) or electrical characteristics (forward voltage).

Recommended alternatives

A yellow LED with matching package and forward voltage, but is significantly dimmer and has a different lens color.

View details

Alternative comparison matrix

Feature / factor	XL-504UYC	XL-504UYD	XL-502UYD	Compatibility / risk
Package	5mm (F5)	5mm (T-1 3/4)	5mm (F5)	5mm (T-1 3/4) / 5mm (F5) — Package is physically compatible.; XL-502UYD: Package is physically compatible.
Voltage	2.0 V	2.0 V	2.0 V	2.0 V — Forward voltage matches.; XL-502UYD: Forward voltage matches.
Color	Yellow	Yellow	-	Yellow — Color matches.
Luminous Intensity	1300 mcd	600 mcd	600 mcd	600 mcd — Significantly dimmer.; XL-502UYD: Significantly dimmer.
Lens Color	White Diffused	Yellow Diffused	Yellow Diffused	Yellow Diffused — Affects off-state appearance.; XL-502UYD: Affects off-state appearance.

Application & sourcing insights

Questions & answers

XL-504UYD is a close alternative. It matches the yellow color and 2.0V forward voltage, but is significantly dimmer (600mcd vs 1300mcd) and has a yellow lens instead of white diffused, which must be considered.