Is there a pin-compatible replacement for LTST-C190KFKT?

No candidate is verified as pin-to-pin without a full datasheet review. However, parts in the same 0603 package, like APT1608SECK/J4-PRV and others in the LTST-C190 series, are highly likely to be pin-compatible but require engineering validation.

What risks should I check before replacing LTST-C190KFKT?

The main risks are color mismatch, different luminous intensity affecting brightness, and forward voltage changes that could require resistor adjustments in the driving circuit. Always check the datasheet for these key parameters.

LTST-C190KFKT Alternatives, Datasheet & Cross Reference | LITEON

LTST-C190KFKT is a standard 0603 package orange SMD LED from LITEON, used for indication. While direct replacements exist, verifying color, forward voltage, and luminous intensity is crucial for any substitute.

AI replacement insight

Electrical riskmedium

Forward voltage differences may require recalculating the series resistor.

Package risklow

Most candidates are in the standard 0603 package, but height can vary.

Sourcing risklow

Switching to a different manufacturer may have supply chain implications.

Can it be replaced directly?

No verified direct replacement is available without datasheet review. Kingbright's APT1608SECK/J4-PRV is the strongest candidate for a drop-in replacement.

Best replacement path

The most promising path is to validate Kingbright's APT1608SECK/J4-PRV, which matches key parameters but needs datasheet confirmation for pinout and intensity.

Main risk

The primary risk is a mismatch in color or forward voltage, which can alter the visual output and require circuit modifications.

Recommended alternatives

A yellow LED from the same series, sharing the same package but differing in color and forward voltage.

View details

Alternative comparison matrix

Feature / factor	LTST-C190KFKT	LTST-C190KSKT	LTST-C190KGKT	Compatibility / risk
Color	Orange	Yellow	Green	Yellow / Green — Candidate is a yellow LED.; LTST-C190KGKT: Candidate is a green LED.
Voltage	2.0V	1.8V	1.9V	1.8V / 1.9V — Lower forward voltage may require resistor adjustment.; LTST-C190KGKT: Slightly lower forward voltage may require resistor adjustment.
Package	SMD	0603 (1608 Metric)	SMD	0603 (1608 Metric) / SMD — Same package family.; LTST-C190KGKT: Same package family.
Pinout	2	2	2	2 — Same pin count.; LTST-C190KGKT: Same pin count.

Application & sourcing insights

Questions & answers

Kingbright's APT1608SECK/J4-PRV is the most promising alternative as it matches the package, color, and wavelength, but it requires datasheet verification. For applications where color can be different, other parts in the LITEON LTST-C190KxKT series are good options.