K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo

 Schematic
Description
The K1010 series consist of an infrared emitting
diode, optically coupled to a phototransistor detector.
They are packaged in a 4-pin DIP package and available
in wide-lead spacing and SMD option.
1. Anode
2. Cathode
3. Emitter
4. Collector

Features
1. Current transfer ratio
( CTR：Min. 50% at IF=5mA VCE=5V )
2. High isolation voltage between input and output
( Viso：5000Vrms )
3. Pb free and RoHS compliant
4. Agency Approvals
• UL1577 / CUL C22.2 No.1 & NTC No.5, File No. E169586
• VDE EN60747, File No.101347
• FIMKO EN60065, File No. NCS/FI23149 A2
• FIMKO EN60950, File No. NCS/FI24584 A1
• SEMKO EN60065, File No. FI016484
• SEMKO EN60950, File No. FI016433
• CQC GB4943/GB8898-2011, File No.CQC10001049555 / CQC08001023986

Applications
• System appliances
• Measuring instruments
• Computer terminals
• Programmable controllers
• Medical instruments
• Physical and chemical equipment
• Signal transmission between circuits of different potentials and impedances
Cosmo Electronics Corp.
Document No. 69P00001.1
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo

Outside Dimension
Unit : mm
1.Dual-in-line type.
2.Surface mount type.
K10101X
K10104X
7.62
7.62
4.60
6.50
6.50
0.25
3.50
2.70
0.25
1.00
10.00±0.4
0.50
1.20
0.10±0.1
0~10°
0.40
3.00
3.50
4.60
1.20
2.54
2.54
13.00°
13.00°
4.Long creepage distance
for surface mount type.
3.Long creepage distance type
K10106X
K10103X
10.16
7.62
7.62
4.60
3.50
0.30
0.25
2.70
1.20
0~10°
1.20
2.54
0.50
TOLERANCE：±0.2mm
2.54

0.90±0.25
11.80+0.2
-0.5
0.25
3.50
10.16±0.50
3.00
0.90±0.25
0.25
4.60
6.50
6.50
Device Marking
Notes:
cosmo
1010
817
YWW
cosmo
1010
817
YWW
□
Cosmo Electronics Corp.
Document No. 69P00001.1
-2-
Y: Year code / WW: Week code
□: CTR rank
http://www.cosmo-ic.com
K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo

Absolute Maximum Ratings
(Ta=25℃)
Parameter
Input
Output

Symbol
Rating
Unit
Forward current
IF
50
mA
Peak forward current
IFM
1
A
Reverse voltage
VR
6
V
Power dissipation
PD
70
mW
Collector-emitter voltage
VCEO
80
V
Emitter-collector voltage
VECO
6
V
Collector current
IC
50
mA
Collector power dissipation
PC
150
mW
Total power dissipation
Ptot
200
mW
Isolation voltage 1 minute
Viso
5000
Vrms
Operating temperature
Topr
-55 to +115
℃
Storage temperature
Tstg
-55 to +125
℃
Soldering temperature 10 seconds
Tsol
260
℃
Electro-optical Characteristics
Parameter
Symbol
Forward voltage
VF
Peak forward voltage
VFM
Input
Output
(Ta=25℃)
Conditions
Min.
Typ.
Max.
Unit
IF=20mA
-
1.2
1.4
V
IFM=0.5A
-
-
3.0
V
Reverse current
IR
VR=4V
-
-
10
μA
Terminal capacitance
Ct
V=0, f=1KHz
-
30
-
pF
Collector dark current
ICEO
VCE=20V, IF=0
-
-
0.1
μA
Current transfer ratio
CTR
IF=5mA, VCE=5V
50
-
600
IF=1mA, VCE=5V
15
-
-
Collector-emitter saturation
Transfer Isolation resistance
characteristics Floating capacitance
VCE(sat) IF=20mA, IC=1mA
Riso
DC500V
-
0.1
10
5x10
11
10
%
0.2
V
-
Ω
Cf
V=0, f=1MHz
-
0.6
1.0
pF
Cut-off frequency
fC
VCC=5V, IC=2mA, RL=100Ω
-
80
-
KHz
Response time (Rise)
tr
-
4
18
μs
Response time (Fall)
tf
-
3
18
μs
Cosmo Electronics Corp.
Document No. 69P00001.1
VCE=2V, IC=2mA, RL=100Ω
-3-
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
Fig.1 Current Transfer Ratio
vs. Forward Current
500
K1010 Model No.
K1010 A
K1010 B
K1010 C
K1010 D
K1010 E
Current Transfer Ratio
CTR ( % )
Classification table of current
transfer ratio is shown below.
CTR ( % )
80 ~ 160
130 ~ 260
200 ~ 400
300 ~ 600
50 ~ 600
VCE =5V
Ta=25℃
450
400
350
300
250
200
150
100
50
0
0 0.5 1
2
5 10
20
50
Forward Current IF (mA)
Fig.2 Collector Power Dissipation
Fig.3 Collector Dark Current
vs. Ambient Temperature
-5
250
10
200
10-6
Collector Dark Current
ICEO ( A )
Collector Power Dissipation
PC ( mW )
vs. Ambient Temperature
150
100
50
0
-55
10
10
10
VCE=20V
-7
-8
-9
-10
10
-11
10
0
25
50
75
-55
115 125
Ambient Temperature Ta (℃)
75
115
Fig.5 Forward Current
vs. Ambient Temperature
vs. Forward Voltage
60
500
Forward Current IF ( mA )
Forward Current IF ( mA )
50
Ambient Temperature Ta (℃)
Fig.4 Forward Current
50
40
30
20
10
0
-55
25
0
0
25
50
75
100
50
Ta=75° C
50° C
25° C
0° C
20
-25° C
10
5
2
1
1.0
115 125
Ambient Temperature Ta (℃)
Cosmo Electronics Corp.
Document No. 69P00001.1
200
1.2
1.4
1.6
1.8
2.0
2.2
2.4
Forward Voltage VF (V)
-4-
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
Fig.6 Collector Current
vs. Collector-Emitter Voltage
Fig.7 Relative Current Transfer Ratio
vs. Ambient Temperature
30
25
150
Ta=25°C
20mA
Relative Current Transfer
Ratio ( % )
Collector Current IC (mA)
IF =30mA
20
15
10mA
10
5mA
5
IF =5mA
VCE=5V
100
50
0
-55
0
0
1
2
3
4
5
6
7
8
9
Fig.8 Collector-Emitter Saturation Voltage
75
115
7
IF = 20m A
Ic=1 m A
0 .1 4
Collector-Emitter Saturation
Voltage VCE ( V )
Collector-Emitter Saturation
Voltage VCE ( V )
50
Voltage vs. Forward Current
0 .1 6
0 .1 2
0 .1 0
0 .0 8
0 .0 6
0 .0 4
0 .0 2
T a=25° C
6
Ic=0.5 mA
5
Ic=1 mA
4
Ic= 3m A
3
-5 5
0
25
50
75
Ic=7 mA
1
11 5
Ambient Temperature Ta (℃)
Fig.11 Response Time (Fall)
vs. Load Resistance
Response Fall Time ( us )
100
tr
20
10
5
0
Forward Current IF (mA)
Fig.10 Response Time (Rise)
vs. Load Resistance
VCE =2V
Ic = 2 m A
T a=25 °C
Ic=5m A
2
0
0
Response Rise Time ( us )
25
Fig.9 Collector-Emitter Saturation
vs. Ambient Temperature
50
0
Ambient Temperature Ta (℃)
Collector-Emitter Voltage VCE (V)
100
-25
10
5
2
1
0 .5
0 .2
50
VC E = 2 V
Ic= 2 m A
T a = 2 5 °C
tf
20
10
5
2
1
0 .5
0 .2
0 .1
0 .1
0 .1
1
0 .1
10
Load Resistance RL (KΩ)
Cosmo Electronics Corp.
Document No. 69P00001.1
1
10
Load Resistance RL (KΩ)
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo

Test Circuit for Response Time
Vcc
IF
RL
1
4
2
3
Vce
IF
Vce
90%
10%
tr
Cosmo Electronics Corp.
Document No. 69P00001.1
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tf
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
 Recommended Soldering Conditions
(a) Infrared reflow soldering：

Peak reflow soldering：
260℃ or below (package surface temperature)

Time of peak reflow temperature：
10 sec

Time of temperature higher than 230℃：
30-60 sec

Time to preheat temperature from 180~190℃： 60-120 sec

Time(s) of reflow：
Two

Flux：
Rosin flux containing small amount of chlorine (The
flux with a maximum chlorine content of 0.2 Wt% is
recommended.)
Recommended Temperature Profile of Infrared Reflow
10 se c M ax.
temperature
260℃
230℃
190℃
3 0 -6 0 s e c
180℃
6 0 -1 2 0 se c
t (s )
(b) Wave soldering：

Temperature：
260℃ or below (molten solder temperature)

Time：
10 seconds or less

Preheating conditions：
120℃ or below (package surface temperature)

Time(s) of reflow：
One

Flux：
Rosin flux containing small amount of chlorine (The flux with a maximum
chlorine content of 0.2 Wt% is recommended.)
(c) Cautions：

Fluxes：
Avoid removing the residual flux with freon-based and chlorine-based
cleaning solvent.

Avoid shorting between portion of frame and leads.
Cosmo Electronics Corp.
Document No. 69P00001.1
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
● Numbering System
K1010 X Y (Z)
Notes:
K1010 = Part No.
X = Lead form option (1,3,4,6)
Y = CTR rank option (A ~ E)
Z = Tape and reel option (TLD, TRU)
Option
Description
Packing quantity
4 (TLD)
surface mount type package + TLD tape & reel option
2000 units per reel
4 (TRU)
surface mount type package + TRU tape & reel option
2000 units per reel
6 (TLD)
6 (TRU)
long creepage distance for surface mount type package +
TLD tape & reel option
long creepage distance for surface mount type package +
TRU tape & reel option
2000 units per reel
2000 units per reel
● Recommended Pad Layout for Surface Mount Lead Form
2.Long creepage distance
for surface mount type.
4 pin L
1.Surface mount type.
4 pin SMD
Unit : mm
Cosmo Electronics Corp.
Document No. 69P00001.1
-8-
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
● 4-pin SMD Carrier Tape & Reel
TOLERANCE：±0.2mm
Cosmo Electronics Corp.
Document No. 69P00001.1
-9-
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
參考用
● 4-pin L Carrier Tape & Reel
TOLERANCE：±0.2mm
Cosmo Electronics Corp.
Document No. 69P00001.1
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K1010 Series
4PIN PHOTOTRANSISTOR
PHOTOCOUPLER
cosmo
 Application Notice
The content of datasheet is the guidance for product use only. cosmo takes no responsibility to the
accuracy of the information provided here. For continuously improving all of products, including quality,
reliability, function...etc., cosmo reserves the right to change the specification, characteristics, data, materials,
and structure of products without notice. Please contact with cosmo to obtain the latest specification.
It would be required to comply with the absolute maximum ratings listed in the specification. cosmo has
no liability and responsibility to the damage caused by improper use of the products.
cosmo products are intended to be designed for use in general electronics application list below:
a. Personal computer
b. OA machine
c. Audio / Video
d. Instrumentation
e. Electrical application
f. Measurement equipment
g. Consumer electronics
h. Telecommunication
cosmo devices shall not be used or related with equipment requiring higher level of quality / reliability, or
malfunction, or failure which may cause loss of human life, bodily injury, includes, without limitation:
a. Medical and other life supporting equipments
b. Space application
c. Telecommunication equipment (trunk lines)
d. Nuclear power control
e. Equipment used for automotive vehicles, trains, ships...etc.
This publication is the property of cosmo. No part of this publication may be reproduced or copied in any form
or any means electronically or mechanically for any purpose, in whole or in part without any written permission
expressed from cosmo.
Cosmo Electronics Corp.
Document No. 69P00001.1
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