LY Y876
21 Version 1.2 | 2018-04-05
Glossary
1) Brightness: Brightness values are measured during a current pulse of typically 25 ms, with an internal
reproducibility of ±8 % and an expanded uncertainty of ±11 % (acc. to GUM with a coverage factor of
k = 3).
2) Reverse Operation: Reverse Operation of 10 hours is permissible in total. Continuous reverse opera-
tion is not allowed.
3) Wavelength: The wavelength is measured at a current pulse of typically 25 ms, with an internal repro-
ducibility of ±0.5 nm and an expanded uncertainty of ±1 nm (acc. to GUM with a coverage factor of k =
3).
4) Forward Voltage: The forward voltage is measured during a current pulse of typically 8 ms, with an
internal reproducibility of ±0.05 V and an expanded uncertainty of ±0.1 V (acc. to GUM with a coverage
factor of k = 3).
5) Thermal Resistance: Rth max is based on statistic values (6
σ
).
6) Thermal Resistance: RthJA results from mounting on PC board FR 4 (pad size 16 mm² per pad)
7) Typical Values: Due to the special conditions of the manufacturing processes of LED, the typical data
or calculated correlations of technical parameters can only reect statistical gures. These do not nec-
essarily correspond to the actual parameters of each single product, which could dier from the typical
data and calculated correlations or the typical characteristic line. If requested, e.g. because of technical
improvements, these typ. data will be changed without any further notice.
8) Characteristic curve: In the range where the line of the graph is broken, you must expect higher dier-
ences between single LEDs within one packing unit.
9) Tolerance of Measure: Unless otherwise noted in drawing, tolerances are specied with ±0.1 and
dimensions are specied in mm.
10) Tape and Reel: All dimensions and tolerances are specied acc. IEC 60286-3 and specied in mm.