
HONGLITRONIC
Strong alternative with matching color, intensity, and voltage in a compatible 3mm package.
Reviewing alternatives for the TJ-L3FYTGHYMCGLFLC9Y-A5, a 3mm round yellow LED. Key parameters for replacement are a yellow color (approx. 591nm), luminous intensity of 200-500 mcd, and a 20mA forward current.
Voltage and current ratings are compatible for the best candidates.
While the package is 3mm round, pinout polarity for THT LEDs must be verified from datasheets.
No verified direct drop-in replacement has been identified. HL-304S33YD is a strong functional alternative that requires engineering review.
HL-304S33YD is the strongest candidate due to its close parametric match, but requires pinout verification.
The primary risk is a visual difference in brightness or viewing angle. Pinout must also be confirmed to avoid damage.

HONGLITRONIC
Strong alternative with matching color, intensity, and voltage in a compatible 3mm package.
| Feature / factor | TJ-L3FYTGHYMCGLFLC9Y-A5 | HL-304S33YD | MHL3014UYTD | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 3mm Round | 3mm (T-1) Round | 3mm Round | 3mm (T-1) Round / 3mm Round — Package is form-factor compatible.; MHL3014UYTD: Package is form-factor compatible. | |
| Color | Yellow | Yellow | Yellow | Yellow — Emitted color matches.; MHL3014UYTD: Emitted color matches. | |
| Luminous Intensity | 200 - 500 mcd | 250 mcd | Not specified | 250 mcd / Not specified — Candidate intensity is within the target's range.; MHL3014UYTD: Luminous intensity must be verified from datasheet. | |
| Voltage | 1.7 V - 2.5 V | 1.8 V - 2.4 V | 2.0 V | 1.8 V - 2.4 V / 2.0 V — Forward voltage range is compatible.; MHL3014UYTD: Forward voltage is compatible. | |
| Viewing Angle | 45 deg | 40° | 40° | 40° — Slightly narrower viewing angle.; MHL3014UYTD: Slightly narrower viewing angle. |
The best alternative found is HL-304S33YD by HONGLITRONIC. It closely matches the target's color, luminous intensity, and electrical specifications in a compatible 3mm package.