7/12/00
OPTION G
7.62
0.26
0.5
Dimensions in mm
SURFACE MOUNT
OPTION SM
10.16
7.0
6.0
1.2
7.62
3.0
13°
Max
3.35
4.0
3.0
2.54
0.26
7.62
6.62
0.5
APPROVALS
lUL recognised, File No. E91231
'X' SPECIFICATION APPROVALS
ll VDE 0884 in 3 available lead forms : -
- STD
- G form
- SMD approved to CECC 00802
lCertified to EN60950 by the following
Test Bodies :-
Nemko - Certificate No. P96101299
Fimko - Registration No. 190469-01..22
Semko - Reference No. 9620076 01
Demko - Reference No. 305567
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
lOptions :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
lHigh Isolation Voltage (5.3kVRMS ,7.5kVPK )
lAll electrical parameters 100% tested
lCustom electrical selections available
APPLICATIONS
lDC motor controllers
lIndustrial systems controllers
lMeasuring instruments
lSignal transmission between systems of
different potentials and impedances
4N25X, 4N26X, 4N27X, 4N28X
4N25, 4N26, 4N27, 4N28
OPTICALLY COUPLED
ISOLATOR
PHOTOTRANSISTOR OUTPUT
1
3 4
6
2 5
ABSOLUTE MAXIMUM RATINGS
(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
INPUT DIODE
Forward Current 60mA
Reverse Voltage 6V
Power Dissipation 105mW
OUTPUT TRANSISTOR
Collector-emitter Voltage BVCEO 30V
Collector-base Voltage BVCBO 70V
Emitter-collector Voltage BVECO 6V
Power Dissipation 160mW
POWER DISSIPATION
Total Power Dissipation 200mW
(derate linearly 2.67mW/°C above 25°C)
ISOCOM INC
1024 S. Greenville Ave, Suite 240,
Allen, TX 75002 USA
Tel: (214) 495-0755 Fax: (214) 495-0901
e-mail info@isocom.com
http://www.isocom.com
ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, TS25 1YD England Tel: (01429)863609
Fax : (01429) 863581 e-mail sales@isocom.co.uk
http://www.isocom.com
10.46
9.86
DB91028M-AAS/A1
0.6
0.1 1.25
0.75
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF)1.2 1.5 VIF = 10mA
Reverse Voltage (VR)6VIR = 10µA
Reverse Current (IR)10 µAVR = 6V
Output Collector-emitter Breakdown (BVCEO)30 VIC = 1mA
( Note 2 )
Collector-base Breakdown (BVCBO)70 VIC = 100µA
Emitter-collector Breakdown (BVECO) 6 VIE = 100µA
Collector-emitter Dark Current (ICEO)50 nA VCE = 10V
Collector-base Dark Current (ICBO)20 nA VCE = 10V
Coupled Current Transfer Ratio (CTR)
4N25, 4N26 20 %10mA IF , 10V VCE
4N27, 4N28 10 %10mA IF , 10V VCE
Collector-emitter Saturation VoltageVCE(SAT) 0.5 V50mA IF , 2mA IC
Input to Output Isolation Voltage VISO 5300 VRMS See note 1
7500 VPK See note 1
Input-output Isolation Resistance RISO 5x1010 ΩVIO = 500V (note 1)
Turn-on Time ton 4µsVCC = 10V ,
Turn-off Time toff 3µsIF= 10mA, RL = 100Ω
Output Rise Time tr 2µs( FIG 1)
Output Fall Time tf 2µs
Note 1 Measured with input leads shorted together and output leads shorted together.
Note 2 Special Selections are available on request. Please consult the factory.
7/12/00
ELECTRICAL CHARACTERISTICS ( TA= 25°C Unless otherwise noted )
Output
Output
RL = 100Ω
Input
10%
90% 90%
10%
ton
tr
FIG 1
VCC
toff
tf
DB91028M-AAS/A1
7/12/00
50
Ambient temperature TA ( °C )
150
0
200
Ambient temperature TA ( °C )
Collector power dissipation P C (mW)
60
30
20
10
40
50
-30 0 25 50 75 100 125
Collector Power Dissipation vs. Ambient Temperature
Forward Current vs. Ambient Temperature
100
Forward current I F (mA)
70
80
-30 0 25 50 75 100 125
-30 0 25 50 75 100
Ambient temperature TA ( °C )
Collector-emitter saturation voltage V CE(SAT) (V)
Collector-emitter Saturation
Voltage vs. Ambient Temperature
0
0.02
0.04
0.06
0.08
0.10
0.12
0.14
IF = 50mA
IC = 2mA
1 2 5 10 20 50
0
0.4
0.6
0.8
1.0
1.2
0.2
1.4
VCE = 10V
TA = 25°C
Relative current transfer ratio
Relative Current Transfer Ratio
vs. Forward Current
Forward current IF (mA)
1 2 5 10 20 50
0
1.2
1.6
2.0
2.4
2.8
VCE = 0.5V
TA = 25°C
Relative current transfer ratio
Relative Current Transfer Ratio
vs. Forward Current
Forward current IF (mA)
0.8
0.4
0
0.5
1.0
1.5 IF = 10mA
VCE = 10V
Relative Current Transfer Ratio
vs. Ambient Temperature
Relative current transfer ratio
Ambient temperature TA ( °C )
-30 0 25 50 75 100
DB91028M-AAS/A1
