
A form-fit alternative in the same 0805 package and color, but with lower brightness that requires review.
XL-2012UBC is a common 0805 blue SMD LED. While no direct drop-in replacement is confirmed, several functional and parametric alternatives exist that may be suitable after engineering review.
Brightness and forward voltage differences require review.
All viable candidates use the same 0805 package.
No direct, fully-equivalent replacement has been identified. All candidates require a review of key parametric differences.
D-B080508B1-KS2 is the closest match if lower brightness is acceptable. SZYY0805B is an option if the circuit can be adapted or if it's confirmed to run at 20mA.
The primary risk is a mismatch in luminous intensity (brightness) or forward voltage, which can affect visual indication and circuit power consumption.

A form-fit alternative in the same 0805 package and color, but with lower brightness that requires review.
| Feature / factor | XL-2012UBC | D-B080508B1-KS2 | SZYY0805B | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) — Same package ensures physical compatibility.; SZYY0805B: Same package ensures physical compatibility. | |
| Color | Blue | Blue | Blue | Blue — Color matches the target.; SZYY0805B: Color matches the target. | |
| Voltage | 2.6V - 3.4V | 2.6V - 3.2V | 2.6V - 3.1V @ 10mA | 2.6V - 3.2V / 2.6V - 3.1V @ 10mA — Candidate's forward voltage range is within the target's range.; SZYY0805B: Vf at target's 20mA current is unknown. | |
| Luminous Intensity | 80-210 mcd | 35-60 mcd | 34-100 mcd @ 10mA | 35-60 mcd / 34-100 mcd @ 10mA — Candidate is significantly dimmer than the target.; SZYY0805B: Brightness at target's 20mA current is unknown. | |
| Temperature | -40°C to +85°C | -40°C to +85°C | - | -40°C to +85°C — Operating temperature range matches. | |
| Current | 20 mA | - | 10 mA | 10 mA — Key specs are rated at a different current, making direct comparison difficult. |
D-B080508B1-KS2 is a strong candidate if lower brightness is acceptable. For applications sensitive to brightness, SZYY0805B may work but requires engineering validation as its specs are rated at a different current.