KT101T

KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
 Description
 Schematic
The KT101T series consist of an infrared emitting
diode, optically coupled to a phototransistor detector, and is
1
4
2
3
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=1mA 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.
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KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
 Outside Dimension
Unit : mm
TOLERANCE : ±0.2mm
 Device Marking
Notes:
cosmo
101T□
YWW
cosmo
101T
□:CTR rank
Y: Year code / WW: Week code
YWW
Cosmo Electronics Corp.
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KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
 Absolute Maximum Ratings
(Ta=25℃)
Parameter
Input
Symbol
Rating
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
 Electro-optical Characteristics
Parameter
Input
(Ta=25℃)
Symbol
Conditions
Min.
Typ.
Max.
Unit
Forward voltage
VF
IF=20mA
–
1.2
1.4
V
Reverse current
IR
VR=4V
–
–
10
uA
Terminal capacitance
Ct
V=0, f=1KHZ
–
30
250
pF
Collector dark current
Collector-Emitter breakdown
Output voltage
Emitter-Collector breakdown
voltage
ICEO
VCE=20V, IF=0
–
–
0.1
uA
BVCEO
Ic=0.1mA, IF=0
80
-
-
V
BVECO
IE=100uA, IF=0
7
-
-
V
Current transfer ratio
CTR
IF=1mA, VCE=5V
50
–
600
%
–
0.1
0.2
V
10
–
Ω
–
0.6
1.0
pF
–
4
–
us
–
3
–
us
Collector-Emitter saturation
voltage
Transfer
charac- Isolation resistance
teristics
Floating capacitance
Response time (Rise)
VCE(sat) IF=10mA, Ic=1mA
Riso
Cf
DC500V, 40 to 60%RH
V=0, f=1MHZ
tr
Vcc=2V,Ic=2mA,RL=100Ω
Response time (Fall)
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KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
Fig.1 Current Transfer Ratio
vs. Forward Current
400
Current Transfer Ratio
CTR ( % )
Classification table of current
transfer ratio is shown below.
CTR Rank.
KT101TA
KT101TB
CTR ( % )
63 TO 125
100 TO 200
Ta=25℃
VCE=5V
350
300
250
200
150
100
50
0
0.1
1 2
0.5
10
5
20
Forward Current IF (mA)
Fig.3 Collector Dark Current
vs. Ambient Temperature
10
Collector Dark Current
ICEO ( A )
Collector Power Dissipation
PC ( mW )
Fig.2 Collector Power Dissipation
vs. Ambient Temperature
200
150
100
50
0
-55
-5
V CE = 2 0 V
-6
10
10
10
10
-7
-8
-9
-1 0
10
-1 1
0
25
55
75
100
10
125
-5 5
Ambient Temperature Ta (℃)
25
50
75
100
115
Fig.5 Forward Current
vs. Forward Voltage
60
500
Forward Current IF ( mA )
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
25℃
Ta=75 ℃
50℃
100
50
0℃
-25℃
20
10
5
2
1
0
115 125
0.5
1.0
1.5
2.0
2.5
3.0
Forward Voltage VF (V)
Ambient Temperature Ta (℃)
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KT101T 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
6
Ta=25°C
5mA
5
Relative Current Transfer
Ratio ( % )
Collector Current IC (mA)
IF =10mA
4
3
1mA
2
0.5mA
1
0.1mA
0
0
1
2
3
4
5
6
7
8
IF = 1 m A
VC E = 5 V
100
50
0
-5 5
9
Collector-Emitter Voltage VCE (V)
50
75
115
Fig.9 Collector-Emitter Saturation
Voltage vs. Forward Current
0.16
7
IF =10mA
Ic=1mA
0.14
Collector-Emitter Saturation
Voltage VCE ( V )
Collector-Emitter Saturation
Voltage VCE ( V )
25
Ambient Temperature Ta (℃)
Fig.8 Collector-Emitter Saturation Voltage
vs. Ambient Temperature
0.12
0.10
0.08
0.06
0.04
0.02
T a= 2 5° C
6
Ic=0 .5 m A
5
Ic= 1 m A
4
Ic =3 m A
3
-55
0
25
50
75
Ic=5 m A
2
Ic= 7m A
1
0
0
115
0
Ambient Temperature Ta (℃)
50
100
VC E = 2 V
Ic = 2 m A
Ta=25°C
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. 69P00008.2
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Fig.11 Response Time (Fall)
vs. Load Resistance
Response Fall Time ( us )
100
2
Forward Current IF (mA)
Fig.10 Response Time (Rise)
vs. Load Resistance
Response Rise Time ( us )
0
1
10
Load Resistance RL (KΩ)
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KT101T 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
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KT101T 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. 69P00008.2
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KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
 Numbering System
KT101T Y (Z)
Notes:
KT101T = 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. 69P00008.2
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KT101T Series
4PIN LSOP LOW INPUT CURRENT
PHOTOCOUPLER
cosmo
 4-pin LSOP Carrier Tape & Reel
TOLERANCE ： ±0.2mm
Cosmo Electronics Corp.
Document No. 69P00008.2
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KT101T 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.
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