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5. ESTIMATED LUMINANCE LIFETIME
The luminance lifetime
This lifet
LED elementary su
Note1: L
Note2:
Note3: By a bient temp
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is the time from initial luminance to half-luminance.
ime is the estima
ted value
Condition
°C (Am
25
Continuous operation, I
bstance
70°C (Sur
Continuous op
ife tim
e expecta
ncy is mean
Estimated lumina
nce lifetime is not th val
e
lement
ary substa
nce.
m
erature, the life
works under high
temperature
PRELIMINARY DATA SHEET DOD-PP-0936 (1st edition)
, and is no
t guara tee va
n
bient tempe
rature of the product)
L=(50)mA/One circuit
face tempera
ture a
t sc
reen)
eration, IL=(5
0)mA ne circ it
/O
time to half-
lum
inance.
e
ue for an L
time ch
ang
es p
art
icularly. Especially,
environme
nt, th
e lif me
eti
NL12880BC20-05
lue
.
Es
timat
ed
lum
inance
l
ifetime
(Life
tim
e
expe
ctan
cy)
Note1, Note2, No
te3
70,000
60,000
u
CD
module bu
t th
e value for LED
in
case the product
becom
es short.
Unit
h
27
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