KT1000 Series
cosmo
Description
The KT1000 series consist of an infrared emitting
diode, optically coupled to a phototransistor detector,
and is incorporated in a 4 pin LSOP wide body
package. It features a high current transfer ratio, low
coupling capacitance and high isolation voltage.
1. Anode
2. Cathode
3. Emitter
4. Collector
4PIN LSOP PHOTOTRANSISTOR
PHOTOCOUPLER
Schematic
1
4
2
3
Features
1. Halogen free
2. Pb free and RoHS compliant
3. High isolation voltage 5000Vrms
4. Opaque type, SMD low profile 4 lead package
5. Current transfer ratio
(CTR : Min.50% at I
F
=5mA V
CE
=5V)
6. 8mm outer creepage distance
7. DC input with transistor output
8. Agency Approvals:
• UL1577 / CUL C22.2 No.1 & NTC No.5, File No. E169586
• VDE EN 60747, File No.40031267
• FMIKO EN 60065 , EN 60950, File No.FI26204 M1
• CQC GB4943 / GB8898-2011, File No. CQC11001057770,CQC11001057771
• CQC GB4943 / GB8898-2011, File No. CQC11001057773,CQC11001057775
Applications
• Hybrid substrates that require high density mounting.
• Programmable controllers.
• Switch mode power supplies.
• Microprocessor system interface.
Cosmo Electronics Corp.
Document No. 69P00006.1
-1-
http://www.cosmo-ic.com
KT1000 Series
cosmo
Outside Dimension
4PIN LSOP PHOTOTRANSISTOR
PHOTOCOUPLER
Unit : mm
TOLERANCE : ±0.2mm
Device Marking
Notes:
cosmo
cosmo
100
YWW
100□
YWW
□:CTR
rank
Y: Year code / WW: Week code
Cosmo Electronics Corp.
Document No. 69P00006.1
-2-
http://www.cosmo-ic.com
KT1000 Series
cosmo
Absolute Maximum Ratings
Parameter
Forward current
Peak forward current
Input
Reverse voltage
Power dissipation
Collector-Emitter voltage
Emitter-Collector voltage
Output
Collector current
Collector power dissipation
Total power dissipation
Isolation voltage 1 minute
Operating temperature
Storage temperature
Soldering temperature 10 second
I
C
P
C
Ptot
Viso
Topr
Tstg
Tsol
50
150
250
5000
-55 to +100
-55 to +125
260
mA
mW
mW
Vrms
℃
℃
℃
V
R
P
D
V
CEO
V
ECO
6
100
80
7
V
mW
V
V
Symbol
I
F
I
FP
Rating
50
1
4PIN LSOP PHOTOTRANSISTOR
PHOTOCOUPLER
(Ta=25℃)
Unit
mA
A
Electro-optical Characteristics
Parameter
Forward voltage
Input
Reverse current
Terminal capacitance
Collector dark current
Collector-Emitter breakdown
Output voltage
Emitter-Collector breakdown
voltage
Current transfer ratio
Collector-emitter saturation
Transfer voltage
charac-
teristics Isolation resistance
Floating capacitance
Response time (Rise)
Response time (Fall)
Symbol
V
F
I
R
Ct
I
CEO
BV
CEO
BV
ECO
CTR
I
F
=20mA
V
R
=4V
V=0, f=1KH
Z
V
CE
=20V, I
F
=0
Ic=0.1mA, I
F
=0
I
E
=100uA, I
F
=0
I
F
=5mA, V
CE
=5V
I
F
=1mA, V
CE
=5V
V
CE
(sat) I
F
=10mA, Ic=1mA
Riso
Cf
tr
tf
DC500V, 40 to 60%RH
V=0, f=1MH
Z
Vcc=2V,Ic=2mA,R
L
=100Ω
Conditions
Min.
–
–
–
–
80
7
50
15
–
5x10
10
–
–
–
0.1
10
11
0.6
5
4
Typ.
1.2
–
30
–
-
-
–
(Ta=25℃)
Max.
1.4
10
250
0.1
-
-
600
Unit
V
uA
pF
uA
V
V
%
0.3
–
1.0
–
–
V
Ω
pF
us
us
Cosmo Electronics Corp.
Document No. 69P00006.1
-3-
http://www.cosmo-ic.com
KT1000 Series
cosmo
4PIN LSOP PHOTOTRANSISTOR
PHOTOCOUPLER
Fig.1 Current Transfer Ratio
vs. Forward Current
5 0 0
Current Transfer Ratio
CTR ( % )
Classification table of current
transfer ratio is shown below.
CTR Rank
KT1005
KT1006
KT1007
KT1008
KT1009
KT1000
CTR ( % )
50 TO 150
100 TO 300
80 TO 160
130 TO 260
200 TO 400
50 TO 600
4 5 0
4 0 0
3 5 0
3 0 0
2 5 0
2 0 0
1 5 0
1 0 0
5 0
0
0
0 . 5
V
CE
=5V
Ta=25
℃
1
2
5 1 0
2 0
5 0
Forward Current I
F
(mA)
Fig.2 Collector Power Dissipation
vs. Ambient Temperature
250
Fig.3 Collector Dark Current
vs. Ambient Temperature
-5
10
V
C E
= 2 0 V
Collector Power Dissipation
P
C
( mW )
200
150
100
50
0
-55
Collector Dark Current
I
CEO
( A )
0
25
55
75
100
125
-6
10
10
10
10
-7
-8
-9
10
10
-1 0
-1 1
-5 5
-2 5
0
25
50
75
100
115
Ambient Temperature Ta (℃)
Ambient Temperature Ta (℃)
Fig.4 Forward Current
vs. Ambient Temperature
60
Fig.5 Forward Current
vs. Forward Voltage
500
Forward Current I
F
( mA )
Forward Current I
F
( mA )
50
40
30
20
10
0
-55
200
100
50
20
10
5
2
1
0
0.5
1.0
1.5
Ta=75
℃
50
℃
25
℃
0
℃
-25
℃
0
25
50
75
100
125
2.0
2.5
3.0
Ambient Temperature Ta (℃)
Forward Voltage V
F
(V)
Cosmo Electronics Corp.
Document No. 69P00006.1
-4-
http://www.cosmo-ic.com
KT1000 Series
cosmo
Fig.6 Collector Current
vs. Collector-Emitter Voltage
Ta=25
℃
4PIN LSOP PHOTOTRANSISTOR
PHOTOCOUPLER
Fig.7 Relative Current Transfer Ratio
vs. Ambient Temperature
150
Relative Current Transfer
Ratio ( % )
Collector Current I
C
(mA)
50
40
30
20
10
I
F
=5m A
I
F
=30m A
I
F
=20m A
I
F
=10m A
P
C
(M A X )
I
F
=5m A
Vce=5V
100
50
0
-55
-25
0
25
50
75
100
0
5
10
Collector-Emitter Voltage V
CE
(V)
Ambient Temperature Ta (℃)
Fig.8 Collector-Emitter Saturation Voltage
vs. Ambient Temperature
0 .1 6
Fig.9 Collector-Emitter Saturation
Voltage vs. Forward Current
7
Collector-Emitter Saturation
Voltage V
CE
( V )
0 .1 4
0 .1 2
0 .1 0
0 .0 8
0 .0 6
0 .0 4
0 .0 2
0
-5 5
0
25
50
Collector-Emitter Saturation
Voltage V
CE
( V )
I
F
= 1 0 m A
Ic= 1 m A
Ta=25° C
6
Ic=0.5m A
5
Ic=1m A
4
Ic=3m A
3
2
1
0
5
10
Ic=5m A
Ic=7m A
75
100
0
Ambient Temperature Ta (℃)
Forward Current I
F
(mA)
Fig.10 Response Time (Rise)
vs. Load Resistance
100
Fig.11 Response Time (Fall)
vs. Load Resistance
100
Response Rise Time ( us )
Response Fall Time ( us )
50
20
10
5
2
1
0 .5
0 .2
0 .1
V
C E
= 2 V
Ic = 2 m A
Ta=25°C
50
20
10
5
2
1
0 .5
0 .2
0 .1
tr
V
C E
= 2 V
Ic = 2 m A
T a = 2 5 °C
tf
0 .1
1
10
0 .1
1
10
Load Resistance R
L
(KΩ)
Load Resistance R
L
(KΩ)
Cosmo Electronics Corp.
Document No. 69P00006.1
-5-
http://www.cosmo-ic.com
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