SPEC NO: DSAD1549 REV NO: V.10 DATE: JUL/09/2007 PAGE: 3 OF 9
APPROVED: WYNEC CHECKED: Tracy Deng DRAWN: .W.J.ZHU ERP: 1205000006
PHOTOCOUPLER
Part Number: KB817
*Electro-optical Characteristics
Parameter Symbol Conditions Min. Typ. Max. Unit
Input
Forward voltage V
F
I
F
=20mA ___ 1.2 1.4 V
Peak forward voltage V
FM
I
FM
=0.5A ___ ___ 3.0 V
Revers e c urrent I
R
V
R
=4V ___ ___ 10 μA
Output Collector dark current I
CEO
V
CE
=20V,I
F
=0mA ___ ___ 10
-7
nA
Transfer
charact-
eristics
*1
Current transfer ratio CTR I
F
=5mA,V
CE
=5V 50 ___ 600 %
Co lle c to r -e mitter s a turation vo lta g e V
CE(
sat
)I
F
=20mA , I
C
=1mA ___ 0.1 0.2 V
Cut-off frequency f
c
V
CE
=5V, I
C
=2mA
R
L
=100Ω,-3dB ___ 80 ___ KHz
Response time Rise time
t
r
V
CE
=2V, I
C
=2mA
R
L
=100Ω
___ 4 18 μs
Fall time t
f
___ 3 18 μs
X 100%
Classification table of current transfer ratio is shown below.
CTR= F
I
Ic
Model No . Ran k mark CT R (%)
KB 817L L 50 to 100
KB 817A A 80 to 160
KB 817B B 130 to 260
KB 817C C 200 to 400
KB 817D D 300 to 600
KB 817A B A o r B 80 to 260
KB817BC B or C 130 to 400
KB 817C D C or D 200 to 600
KB817AC A,B or C 80 to 400
KB817BD B,C or D 130 to 600
KB817AD A,B,C or D 80 to 600
K B81 7 L ,A ,B,C,D or No mark 5 0 to 600