Is there a pin-compatible replacement for DY-333SDRD-SN-A3(EL)(HF)?

Yes, parts like NFD5408URD and XL-504SURD are pin-compatible in the same 5mm through-hole package. However, they are not functionally identical, so you must verify if the changes in color and viewing angle are acceptable for your design.

What risks should I check before replacing DY-333SDRD-SN-A3(EL)(HF)?

The primary risks are functional. You should check the wavelength (which affects the perceived color), the luminous intensity (brightness), and the viewing angle. The proposed alternatives are brighter, have a more orange-red color, and a narrower viewing angle (30° vs 40°).

DY-333SDRD-SN-A3(EL)(HF) Alternatives, Datasheet & Cross Reference | TONYU

Find alternatives for the TONYU DY-333SDRD-SN-A3(EL)(HF), a 5mm red diffused LED. While no exact drop-in has been found, several form-fit compatible options exist that require review of their optical characteristics.

AI replacement insight

Electrical risklow

Forward voltage and current ratings are compatible.

Package risklow

Package is a standard 5mm (T-1 3/4) through-hole type.

Functional riskmedium

Different wavelength (color) and viewing angle require user validation.

Can it be replaced directly?

No direct, drop-in replacement has been identified. Available alternatives match the 5mm package but have a different shade of red (more orange-red) and a narrower viewing angle, which requires application-level verification.

Best replacement path

NFD5408URD and XL-504SURD are the best available alternatives, matching the package and electrical ratings. However, they require engineering review due to differences in color and viewing angle.

Main risk

The primary risk is a noticeable change in the LED's visual characteristics. The alternatives have a different color shade and a narrower light cone, which may impact usability or aesthetics.

Recommended alternatives

Matches 5mm package and electricals, but has a different shade of red and narrower viewing angle.

View details

Alternative comparison matrix

Feature / factor	DY-333SDRD-SN-A3(EL)(HF)	NFD5408URD	XL-504SURD	Compatibility / risk
Package	5mm	5mm (T-1 3/4)	5mm (F5)	5mm (T-1 3/4) / 5mm (F5) — Package size matches.; XL-504SURD: Package size matches.
Color	Red	Red	Red	Red — Both are red LEDs.; XL-504SURD: Both are red LEDs.
Voltage	1.7V - 2.4V	1.8V - 2.4V	2.2V	1.8V - 2.4V / 2.2V — Forward voltage range is compatible.; XL-504SURD: Forward voltage is within the target's range.
Wavelength	656nm	620-630nm	620nm	620-630nm / 620nm — Noticeable color difference (more orange-red).; XL-504SURD: Noticeable color difference (more orange-red).
Viewing Angle	40°	30°	30°	30° — Candidate has a narrower viewing angle.; XL-504SURD: Candidate has a narrower viewing angle.
Luminous Intensity	250mcd	400-800mcd	600mcd	400-800mcd / 600mcd — Candidate is significantly brighter.; XL-504SURD: Candidate is significantly brighter.

Application & sourcing insights

Questions & answers

NFD5408URD and XL-504SURD are strong functional alternatives. They match the 5mm package and electrical ratings, but are brighter and have a slightly different shade of red (more orange-red) and a narrower viewing angle.