KT101W

KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo

 Schematic
Description
The KT101W series consist of an infrared emitting
diode, optically coupled to a phototransistor detector,
1
4
2
3
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

Features
1. Halogen free
2. Pb free and RoHS compliant
3. Temperature range -55℃ to 115℃
4. High isolation voltage 5000Vrms
5. Opaque type, SMD low profile 4 lead package
6. Current transfer ratio
(CTR : Min.50% at IF=0.5mA VCE=5V)
7. 8mm outer creepage distance
8. Low coupling capacitance
9. MSL class 1
10. Agency Approvals:
• UL Approved (No. E169586): UL1577
• c-UL Approved (No. E169586)
• VDE Approved (No. 40031267): DIN EN60747-5-5
• FIMKO Approved: EN60065, EN60950, EN60335, EN60601
• SEMKO Approved: EN60065, EN60950, EN60335
• CQC Approved: GB8898-2011, GB4943.1-2011

Applications
• Industrial controls
• Programmable controllers
•.Switch mode power supplies
• Battery equipment
• Office machine
Cosmo Electronics Corp.
Document No. 69P00009.2
-1-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo

Outside Dimension
Unit : mm
TOLERANCE : ±0.2mm

Device Marking
Notes:
cosmo
cosmo
101W□
YWW
101W
□: CTR rank
Y: Year code / WW: Week code
YWW
Cosmo Electronics Corp.
Document No. 69P00009.2
-2-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo

Absolute Maximum Ratings
(Ta=25℃)
Parameter
Input
Symbol
Unit
Forward current
IF
50
mA
Peak forward current
IFP
1
A
Reverse voltage
VR
6
V
Power dissipation
PD
100
mW
Collector-Emitter voltage
VCEO
80
V
Emitter-Collector voltage
VECO
7
V
Collector current
IC
50
mA
Collector power dissipation
PC
150
mW
Total power dissipation
Ptot
250
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
℃
Output

Rating
Electro-optical Characteristics
Parameter
(Ta=25℃)
Symbol
Conditions
Min.
Typ.
Max.
Unit
Forward voltage
VF
IF=20mA
–
1.2
1.8
V
Reverse current
IR
VR=4V
–
–
10
uA
Terminal capacitance
Ct
V=0, f=1KHZ
–
30
250
pF
Collector dark current
ICEO
VCE=20V, IF=0
–
–
0.1
uA
Collector-Emitter breakdown
Output voltage
BVCEO
Ic=0.1mA, IF=0
80
-
-
V
Emitter-Collector breakdown
voltage
BVECO
IE=100uA, IF=0
7
-
-
V
IF=0.5mA, VCE=5V
50
–
600
%
VCE(sat) IF=10mA, Ic=1mA
–
0.1
0.3
V
10
–
Ω
–
0.6
1.0
pF
–
11
–
us
–
11
–
us
Input
Current transfer ratio
Collector-Emitter saturation
Transfer voltage
charac- Isolation resistance
teristics
Floating capacitance
Response time (Rise)
CTR
Riso
Cf
DC500V, 40 to 60%RH
V=0, f=1MHZ
tr
Vcc=2V,Ic=2mA,RL=100Ω
Response time (Fall)
Cosmo Electronics Corp.
Document No. 69P00009.2
tf
-3-
10
5x10
11
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
Fig.1 Current Transfer Ratio
vs. Forward Current
Current Transfer Ratio
CTR ( % )
800
Classification table of current
transfer ratio is shown below.
CTR Rank.
KT101WA
KT101WB
CTR ( % )
63 TO 125
100 TO 200
Ta=25℃
VCE =5V
700
600
500
400
300
200
100
0
0.1
0.5
1 2
10
5
20
Forward Current IF (mA)
Fig.2 Collector Power Dissipation
vs. Ambient Temperature
Fig.3 Collector Dark Current
vs. Ambient Temperature
Collector Dark Current
ICEO ( A )
Collector Power Dissipation
PC ( mW )
-5
10
200
150
100
50
0
-55
0
25
55
75
100
V CE = 2 0 V
-6
10
10
10
10
-7
-8
-9
-1 0
10
-1 1
10
125
-5 5
Ambient Temperature Ta (℃)
25
50
75
100
115
Fig.5 Forward Current
vs. Forward Voltage
500
Forward Current IF ( mA )
60
Forward Current IF ( mA )
0
Ambient Temperature Ta (℃)
Fig.4 Forward Current
vs. Ambient Temperature
50
40
30
20
10
0
-55
-2 5
0
25
50
75
115 125
25℃
Ta=75℃
50℃
100
50
0℃
-25℃
20
10
5
2
1
0
0.5
1.0
1.5
2.0
2.5
3.0
Forward Voltage VF (V)
Ambient Temperature Ta (℃)
Cosmo Electronics Corp.
Document No. 69P00009.2
200
-4-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
Fig.6 Collector Current
vs. Collector-Emitter Voltage
Fig.7 Relative Current Transfer Ratio
vs. Ambient Temperature
150
IF =10m A
T a=25°C
5m A
5
Relative Current Transfer
Ratio ( % )
Collector Current IC (mA)
6
4
3
1m A
2
0.5m A
1
0.1m A
0
0
1
2
3
4
5
6
7
8
IF = 0 .5 m A
V C E= 5 V
100
50
0
-5 5
9
Collector-Emitter Voltage VCE (V)
Collector-Emitter Saturation
Voltage VCE ( V )
Collector-Emitter Saturation
Voltage VCE ( V )
0.12
0.10
0.08
0.06
0.04
0.02
115
T a= 2 5° C
6
Ic=0 .5 m A
5
Ic= 1 m A
4
Ic =3 m A
3
0
25
50
75
Ic=5 m A
2
Ic= 7m A
1
0
0
115
0
Ambient Temperature Ta (℃)
Response Fall Time ( us )
tr
20
10
5
2
1
0 .5
0 .2
0 .1
0 .1
1
8
6
10
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
10
0 .1
Load Resistance RL (KΩ)
Cosmo Electronics Corp.
Document No. 69P00009.2
4
Fig.11 Response Time (Fall)
vs. Load Resistance
100
VC E = 2 V
Ic = 2 m A
Ta=25°C
2
Forward Current IF (mA)
Fig.10 Response Time (Rise)
vs. Load Resistance
Response Rise Time ( us )
75
7
I F =10m A
Ic=1m A
0.14
50
50
Fig.9 Collector-Emitter Saturation
Voltage vs. Forward Current
0.16
100
25
Ambient Temperature Ta (℃)
Fig.8 Collector-Emitter Saturation Voltage
vs. Ambient Temperature
-55
0
1
10
Load Resistance RL (KΩ)
-5-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
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. 69P00009.2
-6-
tf
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
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 sec M ax.
temperature
260℃
230℃
190℃
3 0 -6 0 s e c
180℃
6 0 -1 2 0 s e 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. 69P00009.2
-7-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo

Numbering System
KT101W Y (Z)
Notes:
KT101W = Part No.
Y = CTR rank option (A ~ B)
Z = Tape and reel option (TLD、TRU)
Option

Description
Packing quantity
TLD
TLD tape & reel option
3000 units per reel
TRU
TRU tape & reel option
3000 units per reel
Recommended Pad Layout for Surface Mount Lead Form
Unit mm
Cosmo Electronics Corp.
Document No. 69P00009.2
-8-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo

4-pin LSOP Carrier Tape & Reel
TOLERANCE ： ±0.2mm
Cosmo Electronics Corp.
Document No. 69P00009.2
-9-
http://www.cosmo-ic.com
KT101W Series
4PIN LSOP LOW INPUT CURRENT
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. 69P00009.2
- 10 -
http://www.cosmo-ic.com