
YONGYUTAI
Strong match on package, color, and voltage, but may be a downgrade in brightness. Verification is recommended.
Finding a substitute for the KT-0805B blue 0805 LED involves matching its package, color, and electricals. Key parameters to verify are forward voltage (2.6-3.1V) and luminous intensity at 5mA.
Differences in forward voltage and luminous intensity require review.
The 0805 package is standard and widely available.
No verified direct drop-in replacement is available. YLED0805B is a strong candidate but is likely a downgrade in brightness, requiring validation.
YLED0805B offers the closest parametric match but may be dimmer. ORH-B35A is an option if the circuit tolerates a higher forward voltage.
The main risk is a mismatch in luminous intensity (brightness) at the application's operating current, and potential forward voltage incompatibility.

YONGYUTAI
Strong match on package, color, and voltage, but may be a downgrade in brightness. Verification is recommended.
| Feature / factor | KT-0805B | YLED0805B | ORH-B35A | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 — Package size matches.; ORH-B35A: Package size matches. | |
| Color | Blue | Blue | Super Blue | Blue / Super Blue — Color matches.; ORH-B35A: Color matches. | |
| Wavelength | 460-475 nm | 457-475 nm | 470 nm | 457-475 nm / 470 nm — Wavelength range overlaps well with target.; ORH-B35A: Peak wavelength is within target's dominant range. | |
| Voltage | 2.6-3.1 V @ 5mA | 2.7-3.1 V @ 25mA | 3.2 V (Typ) @ 20mA | 2.7-3.1 V @ 25mA / 3.2 V (Typ) @ 20mA — Vf range is compatible, even at a higher test current.; ORH-B35A: Higher typical Vf than target's max, at a different test current. | |
| Luminous Intensity | 34-100 mcd @ 5mA | 20-80 mcd @ 25mA | 50 mcd (Typ) @ 20mA | 20-80 mcd @ 25mA / 50 mcd (Typ) @ 20mA — Likely dimmer than target at the same operating current.; ORH-B35A: Test conditions differ, making direct brightness comparison difficult. |
YLED0805B is a strong functional alternative with the same package and color, but may be less bright. ORH-B35A is another option, but has a higher forward voltage. Both require engineering review.