Is there a pin-compatible replacement for LTST-C193KGKT-5A?

Yes, other 0603 package LEDs are pin-compatible. APTD1608CGCK is one such example, but its optical parameters like viewing angle and brightness differ significantly, requiring careful engineering review before substitution.

What risks should I check before replacing LTST-C193KGKT-5A?

Key risks include mismatched viewing angle, which affects light dispersion, and different luminous intensity. The replacement may be too focused or have a different brightness. Always verify electrical parameters to ensure compatibility with your driver circuit.

LTST-C193KGKT-5A Alternatives, Datasheet & Cross Reference | LITEON

The LITEON LTST-C193KGKT-5A is a compact 0603 green LED for low-current applications. A replacement must match its brightness at 5mA, color, and wide 130° viewing angle.

AI replacement insight

Electrical risklow

Forward voltage is similar, but test currents differ.

Package risklow

Package is a standard 0603, ensuring physical compatibility.

Optical riskhigh

Viewing angle is much narrower and brightness is not specified at the same current.

Can it be replaced directly?

No direct, drop-in replacement was found. The closest candidate, APTD1608CGCK, requires validation due to major parametric differences.

Best replacement path

Search for 0603 green LEDs with a wavelength near 572nm, a wide viewing angle (~130°), and specified brightness at 5mA.

Main risk

The primary risk is a mismatch in optical characteristics, specifically viewing angle and luminous intensity, altering the product's visual performance.

Recommended alternatives

A functional alternative in the same 0603 package and color, but with a narrower viewing angle and different electrical characteristics.

View details

Alternative comparison matrix

Feature / factor	LTST-C193KGKT-5A	APTD1608CGCK	Compatibility / risk
Package	1608 (0603)	1608 (0603)	1608 (0603) — Package size matches.
Color/Wavelength	Green, 567.5-576.5nm	Green, 570nm	Green, 570nm — Color and wavelength are compatible.
Viewing Angle	130°	60°	60° — Significantly narrower viewing angle will change light dispersion.
Luminous Intensity	4.5-28mcd @ 5mA	190mcd @ 20mA	190mcd @ 20mA — Specified at 4x the current; brightness at 5mA is unknown.
Forward Voltage	1.7-2.3V @ 5mA	2.1V @ 20mA	2.1V @ 20mA — Likely compatible, but test conditions differ.

Application & sourcing insights

Questions & answers

APTD1608CGCK by Kingbright is a potential functional alternative in the same 0603 package and green color. However, it has a much narrower viewing angle and different brightness characteristics that must be verified for your application.