IN-S42ATA

Summary

every figure cited to the datasheet below

0402 top-view SMD LED in a clear-lens, PCB-type moulded package — 1.0 × 0.5 × 0.45 mm^{p.1, p.8}
AlInGaP amber emitter — dominant wavelength 605 nm, peak wavelength 610 nm^{p.3, p.7}
Forward voltage 2.1 V typ (2.6 V max) at the 20 mA test current^p.3
Luminous intensity 145 mcd typ at 20 mA (electrical-characteristics table)^p.3
Wide 130° viewing angle (2θ_1/2)^p.3
25 mA max continuous forward current; 100 mA peak at 1/10 duty, 0.1 ms pulse^p.2
5 V max reverse voltage; 78 mW max power dissipation^p.2
Operating −30 to +80 °C, storage −40 to +85 °C^p.2
Moisture sensitive and ESD sensitive (AlInGaP) — ships dry-packed in a sealed moisture-barrier anti-static bag^{p.2, p.11}
Supplied on tape and reel, 5000 pcs per reel^p.9

IN-S42ATA is the amber member of Inolux's IN-S42AT series: a low-profile 0402 top-view indicator LED in a clear, PCB-type moulded package.^p.1 It uses the same AlInGaP die family as the red and yellow variants^p.7 and sits at a dominant wavelength of 605 nm — a true amber, one step short of red.^p.3

Budget 2.1 V across it at the 20 mA test point and the electrical table returns 145 mcd.^p.3 Drive it through a current-limiting resistor rather than straight off a rail — the datasheet says so explicitly^p.12 — and keep continuous current at or below 25 mA.^p.2 At 3.3 V that is a (3.3 − 2.1) / 0.02 = 60 Ω resistor for the full 20 mA, and the drop is identical to the red variant's, so amber and red status lights can share one resistor value.^p.3

Two caveats. The 130° viewing angle^p.3 makes this a wide-angle panel indicator, not a directional source, and reverse voltage is rated to only 5 V.^p.2 One doc quirk to know: the ordering table lists 90 mcd typical where the electrical table says 145 mcd^{p.7, p.3} — this page quotes the electrical-characteristics value.