Is there a pin-compatible replacement for NCD0603R1?

Yes, several 0603 red LEDs like A-SP192YR6AC-A01-4T and FC-1608R1-620 are pin-compatible in package and pinout. However, key parameters like luminous intensity differ, requiring engineering review before substitution.

What risks should I check before replacing NCD0603R1?

The main risk is a mismatch in luminous intensity (brightness). Some alternatives are significantly brighter or dimmer, which can affect visual appearance and uniformity. Also check for minor differences in viewing angle.

NCD0603R1 Alternatives, Datasheet & Cross Reference | Ningbo Songle Relay Co., Ltd.

NCD0603R1 is a standard 0603 red LED from NationStar, commonly used for indicators. While several pin-compatible alternatives exist, they vary in brightness and require careful review before substitution.

AI replacement insight

Package risklow

Standard 0603 package is widely available.

Electrical riskmedium

Key risk is luminous intensity (brightness) mismatch, which can be higher or lower in alternatives.

Can it be replaced directly?

No direct drop-in replacement was found without caveats. A-SP192YR6AC-A01-4T is a potential upgrade in brightness, while FC-1608R1-620 is a slightly dimmer option. Both require review.

Best replacement path

functional_alternate

Main risk

Luminous intensity mismatch.

Recommended alternatives

Functional alternative in a 0603 package with similar electricals but significantly higher brightness.

View details

Alternative comparison matrix

Feature / factor	NCD0603R1	A-SP192YR6AC-A01-4T	FC-1608R1-620	Compatibility / risk
Package	0603 (1608 Metric)	0603 (1608 Metric)	1608 (0603)	0603 (1608 Metric) / 1608 (0603) — Package size matches.; FC-1608R1-620: Package size matches.
Color	Red (622nm)	Brilliant Red	Red	Brilliant Red — Color and wavelength (617-625nm) match.; FC-1608R1-620: Color and wavelength (622nm) match.
Voltage	2.0V typ	1.7V - 2.3V	2.0V	1.7V - 2.3V / 2.0V — Forward voltage range is compatible.; FC-1608R1-620: Forward voltage matches.
Luminous Intensity	120 mcd	450-900 mcd	80 mcd	450-900 mcd / 80 mcd — Significantly brighter, may require design review.; FC-1608R1-620: Dimmer, may not be acceptable.
Viewing Angle	130°	120°	140°	120° / 140° — Slightly narrower viewing angle.; FC-1608R1-620: Slightly wider viewing angle.

Application & sourcing insights

Questions & answers

A-SP192YR6AC-A01-4T is a strong functional alternative with much higher brightness. For applications sensitive to brightness, FC-1608R1-620 is a closer match but is slightly dimmer. Both require engineering review.