ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, Cleveland, TS25 1YD
Tel: (01429) 863609 Fax :(01429) 863581
IS204X,ISD204X,ISQ204X3,2,1 
IS204,ISD204,ISQ204-3,-2,-1
DB92237m-AAS/A1
0.5
7.62
7.0
6.0
1.2
APPROVALS
l UL recognised, File No. E91231
'X' SPECIFICATION APPROVALS
ll VDE 0884 in 3 available lead forms : -
- STD
- G form
- SMD approved to CECC 00802
l IS204X is certified to EN60950 by the
following Test Bodies :Nemko - Certificate No. P96102022 
Fimko - Registration No. 192313-01..25 
Semko - Reference No. 9639052 01 
Demko - Reference No. 305969 
ISD204X - EN60950 pending 
ISQ204X - EN60950 pending
DESCRIPTION
The IS204-3,-2,-1, ISD204-3,-2,-1, ISQ204-3,2,-1 series of optically coupled isolators consist 
of infrared light emitting diodes and NPN 
silicon photo transistors in space efficient dual 
in line plastic packages.
FEATURES
l Options :-
10mm lead spread - add G after part no. 
Surface mount - add SM after part no. 
Tape&reel - add SMT&R after part no.
ll Low input current 0.5mA I
F
l High Current Transfer Ratio (50% min)
l High Isolation Voltage (5.3kV
RMS 
,7.5kV
PK 
)
l High BV
CEO
 (70V min)
APPLICATIONS
l Computer terminals
l Industrial systems controllers
l Signal transmission between systems of
different potentials and impedances
10.16
9.16
7.0
6.0
7.62
1.2
13° 
Max
0.5
2.54
0.5
0.26
0.5
IS204X3,2,1 
IS204-3,-2,-1
3 
4
1
5
8
2
1
3 4
6
Dimensions in mm
LOW INPUT CURRENT
PHOTOTRANSISTOR OPTICALLY
COUPLED ISOLATORS
7.0
6.0
1.2
7.62
3.0
0.5
0.26
2.54
0.5
0.26
13° 
Max
3.0
13° 
Max
3.35
4.0
3.0
3.0
20.32
19.32
4.0
3.0
4.0
3.0
3.35
3.35
2.54
ISD204X3,2,1 
ISD204-3,2,1
ISQ204X3,2,1 
ISQ204-3,2,1
3
6
4 5
2
7
14
15
1
8
7.62
6.62
2 5
16
13 
12
11
6
10
7
9
OPTION G
 7.62
SURFACE MOUNT
OPTION SM
10.16
0.26
10.46
 9.86
0.6
0.1
 1.25
 0.75
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