4N25X, 4N26X, 4N27X, 4N28X
4N25, 4N26, 4N27, 4N28
OPTICALLY COUPLED
ISOLATOR
PHOTOTRANSISTOR OUTPUT
APPROVALS
UL recognised, File No. E91231
Package Code " GG "
'X' SPECIFICATIONAPPROVALS
VDE 0884 in 3 available lead form : -
- STD
- G form
-
SMD approved to CECC 00802
Certified to EN60950 by :-
Nemko - Certificate No. P01102464
3.0
2.54
7.0
6.0
1.2
7.62
6.62
Dimensions in mm
1
2
3
6
5
4
7.62
4.0
3.0
0.5
13°
Max
0.26
DESCRIPTION
The 4N25, 4N26, 4N27, 4N28 series of optically
coupled isolators consist of infrared light
emitting diode and NPN silicon photo transistor
in a standard 6 pin dual in line plastic package.
FEATURES
Options :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
High Isolation Voltage (5.3kV
RMS
,7.5kV
PK
)
All electrical parameters 100% tested
Custom electrical selections available
APPLICATIONS
DC motor controllers
Industrial systems controllers
Measuring instruments
Signal transmission between systems of
different potentials and impedances
0.5
3.35
ABSOLUTEMAXIMUMRATINGS
(25°C unless otherwise specified)
Storage Temperature
-55°C to + 150°C
Operating Temperature
-55°C to + 100°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUTDIODE
Forward Current
Reverse Voltage
Power Dissipation
OUTPUT TRANSISTOR
Collector-emitter Voltage BV
CEO
Collector-base Voltage BV
CBO
Emitter-collector Voltage BV
ECO
Collector Current
Power Dissipation
POWER DISSIPATION
30V
70V
6V
50mA
160mW
60mA
6V
105mW
OPTION SM
SURFACE MOUNT
OPTION G
7.62
0.6
0.1
10.46
9.86
1.25
0.75
0.26
10.16
Total Power Dissipation
200mW
(derate linearly 2.67mW/°C above 25°C)
ISOCOM COMPONENTS 2004 LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, TS25 1UD England
Tel: (01429)863609 Fax : (01429) 863581 e-mail
sales@isocom.co.uk http://www.isocom.com
17/7/08
DB91028
ELECTRICAL CHARACTERISTICS ( T
A
= 25°C Unless otherwise noted )
PARAMETER
Input
Forward Voltage (V
F
)
Reverse Current (I
R
)
Output
Collector-emitter Breakdown (BV
CEO
)
( Note 2 )
Collector-base Breakdown (BV
CBO
)
Emitter-collector Breakdown (BV
ECO
)
Collector-emitter Dark Current (I
CEO
)
Current Transfer Ratio (CTR)
4N25, 4N26
4N27, 4N28
Collector-emitter Saturation VoltageV
CE(SAT)
Input to Output Isolation Voltage V
ISO
Input-output Isolation Resistance R
ISO
Output Rise Time, tr
Output Fall Time, tf
30
70
6
50
MIN TYP MAX UNITS
1.2
1.5
10
V
μA
V
V
V
nA
TEST CONDITION
I
F
= 10mA
V
R
= 6V
I
C
= 1mA
I
C
= 100μA
I
E
= 100μA
V
CE
= 10V
Coupled
20
10
0.5
5300
7500
5x10
10
2
2
%
%
V
V
RMS
V
PK
Ω
μs
μs
10mA I
F
, 10V V
CE
10mA I
F
, 10V V
CE
50mA I
F
, 2mA I
C
See note 1
See note 1
V
IO
= 500V (note 1)
V
CC
= 5V , I
F
= 10mA
R
L
= 75Ω
,
( FIG 1)
Note 1
Note 2
Measured with input leads shorted together and output leads shorted together.
Special Selections are available on request. Please consult the factory.
V
CC
Input
R
L
= 75Ω
Output
Output
10%
t
r
t
f
t
on
t
off
10%
90%
90%
FIG 1
17/7/08
DB91028m-AAS/A5
Collector Power Dissipation vs. Ambient Temperature
200
Collector power dissipation P
C
(mW)
Relative current transfer ratio
Relative Current Transfer Ratio
vs. Forward Current
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
1
2
V
CE
= 0.5V
T
A
= 25°C
5
10
20
50
150
100
50
0
-30
0
25
50
75
100
125
Ambient temperature T
A
( °C )
Forward Current vs. Ambient Temperature
80
70
Relative current transfer ratio
Forward current I
F
(mA)
Forward current I
F
(mA)
Relative Current Transfer Ratio
vs. Forward Current
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1
2
5
V
CE
= 10V
T
A
= 25°C
60
50
40
30
20
10
-30
0
25
50
75
100
125
10
20
50
Ambient temperature T
A
( °C )
Relative Current Transfer Ratio
vs. Ambient Temperature
1.5
Forward current I
F
(mA)
Collector-emitter Saturation
Voltage vs. Ambient Temperature
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
-30
0
25
50
75
100
Ambient temperature T
A
( °C )
DB91028m-AAS/A5
Collector-emitter saturation voltage V
CE(SAT)
(V)
Relative current transfer ratio
I
F
= 10mA
V
CE
= 10V
I
F
= 50mA
I
C
= 2mA
1.0
0.5
0
-30
0
25
50
75
100
Ambient temperature T
A
( °C )
17/7/08
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