Is there a pin-compatible replacement for NFD3401UGD?

While several 3mm 2-pin LEDs are form-factor compatible, no pin-compatible functional equivalents have been verified. Key parameters like brightness and forward voltage differ, necessitating engineering review.

What risks should I check before replacing NFD3401UGD?

Key risks include brightness mismatch affecting visibility, forward voltage differences requiring resistor changes to maintain correct current, and color/wavelength variations altering the visual appearance.

NFD3401UGD Alternatives, Datasheet & Cross Reference | Ningbo Songle Relay Co., Ltd.

NFD3401UGD is a 3mm (T-1) through-hole green LED known for its high brightness. Finding a direct drop-in replacement requires matching its luminous intensity, forward voltage, and specific green wavelength.

AI replacement insight

Electrical riskhigh

Forward voltage mismatch requires resistor changes to avoid overcurrent.

Package risklow

Standard 3mm (T-1) package is widely available.

Functional riskhigh

Drastic brightness reduction will impact visibility and application performance.

Can it be replaced directly?

No direct replacement has been found. All potential alternatives require significant engineering review due to major differences in brightness and forward voltage.

Best replacement path

Parametric alternatives with significant downgrades.

Main risk

Luminous intensity and forward voltage mismatch.

Recommended alternatives

A form-factor match with major parametric differences in brightness and forward voltage, requiring redesign.

View details

Alternative comparison matrix

Feature / factor	NFD3401UGD	TZ-L2-03YYBYG1GDJ30-001	DY-204UYGD-H38-A3	Compatibility / risk
Package	3mm (T-1)	3mm (T-1)	3mm (T-1)	3mm (T-1) — Package size matches.; DY-204UYGD-H38-A3: Package size matches.
Color	Green (515-525nm)	Green (570-575nm)	Yellow Green (570nm)	Green (570-575nm) / Yellow Green (570nm) — Color is green, but wavelength differs (yellow-green vs. pure green).; DY-204UYGD-H38-A3: Different color shade may not be acceptable.
Voltage	2.8V - 3.4V	2.0V - 2.5V	1.8V - 2.4V	2.0V - 2.5V / 1.8V - 2.4V — Lower forward voltage requires circuit modification (e.g., resistor change).; DY-204UYGD-H38-A3: Lower forward voltage requires circuit modification.
Luminous Intensity	1500-3500 mcd	70-120 mcd	25-400 mcd	70-120 mcd / 25-400 mcd — Significantly lower brightness, may not be acceptable for application.; DY-204UYGD-H38-A3: Significantly lower brightness.
Viewing Angle	45°	30°	-	30° — Narrower viewing angle.

Application & sourcing insights

Questions & answers

Currently, no direct drop-in replacements have been identified. Alternatives like TZ-L2-03YYBYG1GDJ30-001 exist but have significantly lower brightness and different electrical characteristics, requiring circuit redesign.